OPINION OF THE COURT
SLOVITER, Circuit Judge.This matter is before us on a Petition for Rehearing filed by the Easttown Town*390ship Zoning Board (“Zoning Board”) from the decision of this panel filed February 12, 2003. In that opinion, originally reported at 319 F.3d 627 (3d Cir.2003), we considered the appeal of Omnipoint Communications Enterprises, L.P. from the decision of the Magistrate Judge who upheld the Zoning Board’s rejection of Omnipoint’s application for a variance to locate its telecommunications tower in a residential district. In our original decision authored by Judge Rosenn we affirmed in part, but vacated in part and remanded to the Magistrate Judge with directions to recalculate the call failure rate in the area at issue to determine whether there is a significant gap in telecommunications service in Easttown Township.
The Zoning Board filed a Petition for Rehearing arguing that the panel decision was contrary to the decision of this court in APT Pittsburgh Ltd. v. Penn Township, 196 F.3d 469 (3d Cir.1999), where we held that a provider whose application has been denied must show both that its facility will fill an existing significant gap in the ability of remote users to access the national telephone network and that the manner in which it proposes to fill that gap is the least intrusive on the values that the denial sought to serve. The Petition for Rehearing argued that the panel decision erred in its conclusion regarding the manner in which the relevant gap should be determined. We directed Omnipoint to file an Answer to the Petition for Rehearing, and after reconsideration the panel majority has vacated the original opinion and agreed with the position of the Zoning Board for the reasons set forth hereafter. Judge Rosenn continues to adhere to the position in his original opinion. Because the panel majority disagrees only with parts II and VII of the original opinion, we reproduce the introduction (excising only the last sentence thereof), Parts I, III, IV, V and VI of Judge Rosenn’s original opinion which we incorporate herewith, inserting asterisks to reflect omissions:
This case raises several important questions concerning the burgeoning wireless telecommunications industry and the interpretation and application of the Telecommunications Act, 47 U.S.C. § 151 et seq. (TCA). Omnipoint is a wireless telecommunications provider that claims that there is a gap in the wireless telecommunications services available to remote users in Easttown Township, Pennsylvania. Omnipoint sued the Zoning Hearing Board (ZHB or Zoning Board) in the United States District Court for the Eastern District of Pennsylvania, claiming that the ZHB violated the prohibition and anti-discrimination provisions of the TCA by denying Omnipoint’s request for a variance to locate a telecommunications tower in a residential district. See 47 U.S.C. § 332(c)(7)(B)(i). Furthermore, Omnipoint alleges that the ordinance under which its variance application was denied violates Pennsylvania law because it is either de jure or de facto exclusionary and fails to provide a “fair share” of Township land for telecommunications uses.
The District Court initially issued a writ of mandamus ordering the ZHB to grant a variance because the Court held that the ZHB decision relied exclusively on aesthetic concerns in its denial and not on substantial evidence supporting rejection. 72 F.Supp.2d 512 (E.D.Pa.1999). We vacated this writ and remanded the case to the District Court for reconsideration in light of APT Pittsburgh Ltd. v. Penn Township, 196 F.3d 469 (3d Cir.1999). See Omnipoint Communications Enterprises, L.P. v. Zoning Hearing Bd. of Easttown Township, 248 F.3d 101 (3d Cir.2001) (Omnipoint I). On remand, Magistrate Judge Hart (MJ) denied Omnipoint’s claims because he concluded that Omnipoint had failed to establish a “significant gap” or *391unreasonable discrimination under the TCA, or unconstitutional exclusion under Pennsylvania law.
* * * * * *
I.
Omnipoint is a licensed provider of wireless digital telephone communications services. As such, it uses a low power radio signal that is transmitted between a portable telephone and an Omnipoint antenna. The antenna then feeds the radio signal to an electronic device that is located nearby. In turn, that device connects the signal to an ordinary telephone line and routes it anywhere in the world. The combination of antenna and equipment is known as a cell site. Because of the low radio signal used by Omnipoint, the range of the cell site is quite small. For example, in East-town Township, the maximum-coverage of a cell site is two miles. When a wireless communication facility (WCF) is not available to cover a specific geographic area, customers who live in or travel through that area will experience unreliable service, dropped calls, or an inability to connect to the Personal Communication Service (PCS) network.1
Omnipoint sought to place a PCS tower in Easttown Township because of the gap in its wireless service. Omnipoint hoped to construct a 110-foot stealth flagpole designed PCS tower, 24 inches in diameter at the base and tapering to 16 inches at the top.2 The fiberglass flagpole structure is designed to incorporate the telecommunications antennae which would be invisible from the outside. For this flagpole, Omnipoint leased space on land owned by the Or Shalom Synagogue, located in an area zoned as residential. Under East-town’s zoning ordinance, a communications tower is not a permissible use in residential districts and no residential structure may be higher than thirty-five feet.3
Omnipoint applied to Easttown Township’s Zoning Hearing Board for use and height variances. It also challenged the validity of the zoning ordinance under Pennsylvania law and the TCA. Omnipoint alleged that the extant ordinance prohibited or effectively prohibited wireless service in violation of the TCA. ZHB held three public hearings on the applications at which a number of local citizens complained that the stealth tower would be an eyesore. ZHB issued a detailed written decision denying Omnipoint’s application and stating that the ordinance was valid under both Pennsylvania and federal law.
The District Court granted Omnipoint’s motion for summary judgment in part and ordered ZHB to grant Omnipoint’s application. 72 F.Supp.2d 512 (E.D.Pa.1999).4 *392We vacated that decision. On remand, the parties consented to have the case proceed in a bench trial before the U.S.M.J. See 28 U.S.C. § 636(c); Fed.R.Civ.P. 73.5 The parties supplemented the record with expert reports and testimony regarding telecommunications services in Easttown. Omnipoint’s principal witness, radio frequency engineer Paul Dugan, supervised drive tests in which approximately six hundred forty actual calls were made using eight cell phones of various providers. Dugan asserted that a signal strength of “negative 85 dbm” was necessary for reliable service.6 On April 1, 2002, the MJ entered judgment in favor of ZHB. See 189 F.Supp.2d 258 (E.D.Pa.2002). The MJ found that Omnipoint had failed to establish a correlation between the negative 85 dBm standard and users’ actual ability to access the national telephone network. The MJ placed significant weight on his finding that mobile phones other than Omnipoint’s experienced problems only 1.96% of the time in Easttown. See 189 F.Supp.2d at 265. He also concluded that the ordinance was not exclusionary. Om-nipoint timely appealed.7
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III.
The Magistrate Judge found as a fact that Omnipoint’s stealth flagpole was the least intrusive of the possible alternatives. See 189 F.Supp.2d at 262. We do not disturb this finding because it is not “clearly erroneous.” See Warner-Lambert Co., 204 F.3d at 89 n. 1. The Township cites the ZHB’s original findings that Om-nipoint considered few other sites and approached a horse farmer but did not follow up. ZHB’s brief also criticizes Omnipoint for not engaging in studies to assess the visual and auditory impact of the flagpoles on the neighboring properties.
Magistrate Judge Hart found that the horse farmer was not interested in leasing the property and that Omnipoint considered other sites but did not choose them because Omnipoint was involved in unrelated litigation with the owners. See 189 F.Supp.2d at 262-63.8 Thus, the MJ’s finding that the stealth flagpole was the least restrictive, alternative is not clearly erroneous.
IV.
In Pennsylvania, a land use restriction is a valid exercise of a municipality’s police power when it promotes public health, safety, and welfare and is substantially related to the purpose it purports to serve. See Kirk v. Zoning Hearing Bd. of Honey Brook, 713 A.2d 1226, 1229 (Pa.Commw.1998). A zoning ordinance is presumed valid and a party challenging it has a heavy burden of proving its invalidity. *393See Penn Township, 196 F.3d at 475. This presumption can be overcome by proof that the ordinance totally excludes an otherwise legitimate use. See Farrell v. Worcester Township Bd. of Supervisors, 85 Pa.Cmwlth. 163, 481 A.2d 986, 989 (1984).9 Exclusionary ordinances take two forms: de jure and de facto. De jure exclusion exists where “the ordinance, on its face, totally bans a legitimate use.” Id. De facto exclusion exists “where an ordinance permits a use on its face, but when applied acts to prohibit the use throughout the municipality.” Id10 The MJ held that Easttown Township Ordinance 160-80 was neither de jure nor de facto exclusionary. We agree.
The ordinance is not facially exclusionary. As interpreted, it does not totally ban a legitimate use. Although the ordinance did not explicitly provide for telecommunications towers, the ZHB twice granted variances for telecommunications towers in the business district under a catch-all provision. 189 F.Supp.2d at 266. Omnipoint argues that a telecommunications tower does not fall within the catchall provision because it is not of the same “general character” as any of the enumerated uses. However, the ZHB’s interpretation of a municipality’s zoning ordinance is entitled to weight because it reflects the construction of a statute by an entity charged with its execution and application. See Sprint Spectrum v. Zoning Hearing Bd. of Mahoning Township, 46 Pa. D. & C.4th 187, 192 (Carbon County CCP 2000). Furthermore, simply because an ordinance does not expressly permit a use does not necessarily mean that it negates that use. Cf. APT Pittsburgh Ltd. P’ship v. Lower Yoder Township, 111 F.Supp.2d 664, 670 (W.D.Pa.2000). Otherwise, the TCA would force localities to enshrine every change in the telecommunications industry into local ordinances at an unrealistically rapid rate. See id.
The ordinance was not de facto exclusionary either. Omnipoint argues that the height restrictions contained in the zoning ordinance effectively prohibit the establishment of functional telecommunication facilities in Easttown Township. The ordinance contained a thirty-five foot height restriction in residential areas and a fifty-foot height restriction in business districts. See 189 F.Supp.2d at 267. The Magistrate Judge rejected this argument because the ZHB had previously granted height variances for communications facili*394ties. Id. at 268; see also Penn Township, 196 F.3d at 476 (explaining that “to succeed in its exclusionary zoning claim ... [the Plaintiff] had to prove that no other telecommunications provider, including itself, could build a functional tower ... ”).11
Omnipoint’s alternative argument under the “fair share” principle also fails. The “fair share” principle applies when an ordinance only partially excludes a land use. An ordinance is exclusionary when a municipality fails to provide for its “fair share” of a legitimate land use such as multi-family dwellings. See Surrick v. Zoning Hearing Bd. of the Township of Upper Providence, 476 Pa. 182, 382 A.2d 105 (1977). Local political units must plan for and provide land-use regulations that meet the legitimate needs of all categories of people who may desire to live within its boundaries. See id. at 108.12
Omnipoint contends that East-town Township fails to provide a “fair share” allowance for telecommunications uses. The B-Business District comprises only 1.1% of the total area of Easttown Township.13 The relevant inquiry is whether Omnipoint has carried its “heavy burden” of showing that the needs of the community’s residents are not being adequately served. See Montgomery Crossing Assoc. v. Township of Lower Gwynedd, 758 A.2d 285, 289 (2000); Schuhach v. Silver, 461 Pa. 366, 336 A.2d 328, 335 (1975). Other telecommunications providers have been able to serve the needs of their customers by placing towers within the business district. To overcome the presumption that the ordinance is constitutional, Omnipoint would have had to show a causal link between the small area of land zoned for business use and the community residents’ inability to meet their needs. This, it failed to do.
V.
In its original complaint, Omnipoint alleged that ZHB’s denial of Omnipoint’s application constituted a violation of 47 U.S.C. § 332(c)(7)(B)(i)(I) because ZHB unreasonably discriminated against “providers of functionally equivalent services.” Judge Katz denied this claim on the ground that Omnipoint had not shown discrimination, reasonable or otherwise. See 72 F.Supp.2d at 515 n. 3. In its cross-appeal of Judge Katz’s decision, Omnipoint did not include the court’s finding on the discrimination issue. Omnipoint I, 248 F.3d at 103. The MJ ruled that this dis*395crimination issue was not properly before him because it had not been presented to the panel on the first appeal. See 189 F. Supp.2d at 270.
Omnipoint argues that a cross-appeal is only required when the appellee advances an issue on appeal that aspires to alter the trial court’s decision. Cf. New Castle County v. Hartford Accident & Indem. Co., 933 F.2d 1162, 1205 (3d Cir.1991). Appellee is free to assert any alternative theory in support of the District Court’s decision, even without a formal cross-appeal. See id.; see also Scott v. Univ. of Delaware, 601 F.2d 76, 91-92 (3d Cir.1979) (Adams, J., concurring).
The discrimination issue is properly before us and we now reject Omnipoint’s argument on the merits. The TCA prohibits unreasonable discrimination against “providers of functionally equivalent services.” 47 U.S.C. § 332(c)(7)(B)(i)(I). The TCA does not prohibit all discrimination against providers, only unreasonable discrimination. See AT&T Wireless PCS v. Virginia Beach, 155 F.3d 423, 427 (4th Cir.1998).
In Nextel, we explained that the purpose of the “unreasonable discrimination” language of § 332(7)(B)(i)(I) is to ensure that once the municipality allows the first wireless provider to enter, the municipality may not unreasonably exclude subsequent providers who similarly wish to enter and create a competitive market in telecommunications services. See Nextel, 282 F.3d at 264 n. 6. Nextel creates a two-part test for determining if a zoning board has unreasonably discriminated. First, the plaintiff must show that the relevant providers are functionally equivalent. Second, the plaintiff must show that the government body unreasonably discriminated. Id. at 266.
The equivalency of function relates to the telecommunications services the entity provides rather than to the technical particularities of its operations. See id. at 266 n. 13. We hold that Omnipoint is functionally equivalent to the other telecommunications providers that were granted variances in Easttown Township.
Omnipoint’s discrimination claim fails under the second part of the test. Permitting the erection of a communications tower in a business district does not compel the ZHB to permit a similar tower at a later date in a residential district. See Sprint Spectrum L.P. v. Willoth, 176 F.3d 630, 639 (2d Cir.1999); see also H.R. Conf. Rep. 104-458, at 208, reprinted in 1996 U.S.C.C.A.N. at 222 (“the conferees do not intend that if a State or local government grants a permit in a commercial district, it must also grant a permit for a competitor’s 50-foot tower in a residential district”). The two communications towers that existed in Easttown at the time of Omnipoint’s application were both located in areas zoned for business rather than residential use. See 72 F.Supp.2d at 515 n. 3. Thus, the ZHB’s denial was not unreasonable and Omnipoint’s § 332(c)(7)(B)(i)(I) challenge fails.14
*396VI.
Omnipoint dedicates a significant portion of its brief to a direct attack on Penn Township. It points to the TCA, which seeks to create a “pro-competitive, de-reg-ulatory national policy framework designed to rapidly accelerate private sector deployment of advanced telecommunication and information technologies and services to all Americans by opening all telecommunications markets to competition.” H.R. Conf. Rep. No. 104-458, at 113 (1996), reprinted in 1996 U.S.C.C.A.N. 124; see also Nextel, 282 F.3d at 264 n. 6. Omnipoint argues that Penn Township undermines Congress’ purpose of creating a competitive market for telecommunications services and has the effect of privileging first entrants with antiquated technology over subsequent entrants who could promote consumer welfare by creating competition and offering superior services. We decline to address this question because a panel cannot overrule existing Third Circuit precedent. See 3d Cir. Internal Operating Proc. 9.1.
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Sur Rehearing
In Part II of the original opinion, we addressed Omnipoint’s argument that the Township zoning ordinance has “the effect of prohibiting the provision of personal wireless services” in violation of the TCA. The issue before us on rehearing is the manner in which to determine the existence of a “significant gap.” That is the portion of the original opinion that we have withdrawn and the issue we now consider.
Congress enacted the TCA to provide “ ‘a pro-competitive, de-regulatory national policy framework designed to rapidly accelerate private sector deployment of advanced telecommunications and information technologies and services to all Americans by opening all telecommunications markets to competition.’ ” Penn Township, 196 F.3d at 473 (citation omitted). The TCA preserves the authority of state and local government to regulate land use, but limits that authority with respect to personal wireless service facilities. Id. The TCA provides:
Preservation of local zoning authority
(A) General authority
Except as provided in this paragraph, nothing in this chapter shall limit or affect the authority of a State or local government ... over decisions regarding the placement, construction, and modification of personal wireless service facilities.
(B) Limitations
(i) The regulation of the placement, construction, and modification of personal wireless service facilities by any State or local government or instrumentality thereof -
(I) shall not unreasonably discriminate among providers of functionally equivalent services; and
(II) shall not prohibit or have the effect of prohibiting the provision of personal wireless services.
47 U.S.C. § 332(c)(7) (emphasis added).
In Penn Township, 196 F.3d 469, we considered the claims of APT, a wireless communications provider, which had been *397denied a zoning variance that it sought so that it could erect a communications tower and remedy a gap in coverage in its wireless service. APT claimed, inter alia, that the zoning ordinance was unconstitutional under Pennsylvania law and violated the TCA because it had the “effect of prohibiting the provision of personal wireless services” in the township. The township’s ordinance did provide for communications towers in the township’s light industrial districts but APT concluded that land in those districts was either not technologically feasible for it or unavailable. APT then argued that the ordinance was unconstitutionally exclusionary, an argument we rejected:
The fact that the design APT has chosen for its system enables it to erect the tower that it wishes to build only on a relatively small portion of the land in the M Districts does not make Ordinance 109 exclusionary. Pennsylvania’s rule against exclusionary zoning does not impose upon a township the duty to assure that all providers, regardless of the systems they have chosen to construct, will have a suitable site for a functioning tower within the township. To be exclusionary, the ordinance must effectively foreclose not only APT’s use, but all use.
Id. at 477.
We also rejected APT’s claim that the zoning ordinance had “the effect of prohibiting the provision of personal wireless services” in violation of the TCA. We explained that “[i]nterpreting the TCA’s ‘effect of prohibiting’ clause to encompass every individual zoning denial simply because it has the effect of precluding a specific provider from providing wireless services ... would give the TCA preemptive effect well beyond what Congress intended.” Id. at 478.
We recognized that there can be circumstances in which a provider would be able to “establish that an individual adverse zoning decision has the ‘effect’ of violating [the TCA].” Id. at 479. In that connection, we approvingly quoted the decision in Sprint Spectrum, L.P. v. Willoth, 176 F.3d 630 (2d Cir.1999), where that court concluded that the most compelling reading of the “effect of prohibiting” provision is that “ ‘local governments may not regulate personal wireless service facilities in such a way as to prohibit remote users from reaching such facilities. In other words, local governments must allow service providers to fill gaps in the ability of wireless telephones to have access to land-lines.’ ” Penn Township, 196 F.3d at 479 (quoting Willoth, 176 F.3d at 642-43).
We agreed with the Willoth court’s recognition that the TCA preserved the regulatory authority of local zoning boards who may insist that service gaps be closed by the least intrusive means. Id. Furthermore, because “the focus is on the remote users’ access to the national telephone network, the authority of the local board to deny applications is greater where the area which the provider applicant seeks to serve is already served by another provider.” Id. at 479-80. Nonetheless, the Board’s denial of an application is subject to the TCA provision prohibiting unreasonable discrimination among providers. Id.
In Penn Township we set forth what a provider must produce to show a violation of the TCA:
[I]t is necessary for the provider to show more than that it was denied an opportunity to fill a gap in its service system. In order to show a violation of subsection 332(c)(7)(B)(i)(II) under Willoth, an unsuccessful provider applicant must show two things. First, the provider must show that its facility will fill an *398existing significant gap in the ability of remote users to access the national telephone network. In this context, the relevant gap, if any, is a gap in the service available to remote users. Not all gaps in a particular provider’s service will involve a gap in the service available to remote users. The provider’s showing on this issue will thus have to include evidence that the area the new facility will serve is not already served by another provider.
Second, the provider applicant must also show that the manner in which it proposes to fill the significant gap in service is the least intrusive on the values that the denial sought to serve. This will require a showing that a good faith effort has been made to identify and evaluate less intrusive alternatives, e.g., that the provider has considered less sensitive sites, alternative system designs, alternative tower designs, placement of antennae on existing structures, etc.
Id. at 480 (emphasis added) (footnote omitted). We agreed with the Willoth court that the denial of a variance “will still be tempered” by subsection B(i)(I) of the TCA which prohibits unreasonable discrimination. Id. at 480 (quoting Willoth, 176 F.3d at 643).
Omnipoint has not shown that the Zoning Board’s denial of a variance is the result of any unreasonable discrimination. Instead, it focuses most of its fire on the issue whether it showed a “significant gap” in service, a finding required by Penn Township before a disappointed applicant can successfully claim that the denial of the application has the effect of prohibiting the provision of personal wireless services. Omnipoint points to the testimony of its expert before the Zoning Board, Edmond Vea, that Omnipoint’s wireless signal strength, as well as that of other wireless carriers, drops below negative 85 dBm in the area at issue and that when the signal is this low, wireless service drops below acceptable criteria and there is a probability that callers will lose their calls or will not be able to make a call. It also points to the testimony of another of its experts, Paul Dugan, who testified before the Magistrate Judge that a signal above negative 85 dBm is required to provide reliable service.
Dugan testified that, in conducting the tests on which Omnipoint relied, he linked eight cellular phones to a laptop computer and measured the signal strength and performance of the eight cellular services in Easttown Township. A car was driven through the Township, the computer initiated calls and Dugan collected the data. Dugan concluded that a coverage hole exists for all licensees near Omnipoint’s proposed communication facility because the carriers do not have sufficient signal strength or negative 85 dBm.
The Magistrate Judge found several flaws in Dugan’s assessment. He explained that Dugan did not identify any regulatory standard requiring negative 85 dBm as the minimum signal strength, and that he did not establish a correlation between the negative 85 dBm standard and the actual ability of users to access the national telephone network. Rather, Dugan’s own charts reflected that most of the calls were initiated successfully even when the signal strength was below negative 85 dBm. Although Dugan explained that he would expect to lose calls if he drove for an extended period of time, the Magistrate Judge noted that the burden is on Omnipoint to establish a significant gap.
The Magistrate Judge further found that Dugan’s test results establish that there is reliable cellular service. Dugan testified that each of the eight phones made about 80 calls for a total of 640 calls. The seven service providers other than *399Omnipoint had 10 dropped calls and only-one instance of no service. The Magistrate Judge calculated that of the 560 calls made using the other providers’ services, only 11 or 1.96% experienced service problems. Omnipoint had 11 dropped calls and 13 instances of no service, or service problems 30% of the time. The Magistrate Judge concluded that only Omnipoint was incapable of providing reliable service to its customers and that the Penn Township test is not satisfied because “ ‘[i]t is necessary for the provider to show more than that it was denied an opportunity to fill a gap in its service system.’ ” Omnipoint Comm. Enter. v. Zoning Hearing Bd., 189 F.Supp.2d 258, 265 (E.D.Pa.2002) (quoting Penn Township, 196 F.3d at 480). The Magistrate Judge therefore concluded that where the drive test data does not support the expert opinion that weak signal strength results in unreliable wireless service, Omnipoint has not met its burden of establishing a significant gap in coverage.
Omnipoint argues in its reply brief that the Magistrate Judge erred in measuring the gap in service by evaluating the coverage of the seven other providers without including Omnipoint in its calculation. Omnipoint contends that under Penn Township, the Magistrate Judge should have looked at all of the providers in the aggregate, and if he had he would have determined that the call failure rate is approximately 5.4% instead of 1.96%, which is sufficient to establish a significant gap.15 This is the principal point of difference between the majority and Judge Rosenn.
Penn Township requires a provider to show that “the area the new facility will serve is not already served by another provider.” 196 F.3d at 480. Here, there are seven other cellular services provided in the area at issue. If we were to accept Omnipoint’s argument, we would make Penn Township's, requirement meaningless.
This conclusion is consistent with our earlier opinion in Nextel West Corp. v. Unity Township, 282 F.3d 257 (3d Cir.2002), where Nextel claimed that the zoning ordinance of the defendant township had the effect of prohibiting communications towers in violation of the TCA.16 We reaffirmed the Penn Township test and explained that the first prong (that the provider must show that its facility will fill an existing significant gap in the service available to remote users) requires “a gap from a user’s perspective, rather than a particular provider’s perspective.” Nextel West, 282 F.3d at 265. We explained: “[t]hus, this prong focuses on whether any provider is covering the gap, instead of whether the gap exists only in, for example, Nextel’s service. A provider must ‘include evidence that the area the new facility will serve is not already served by another provider.’ ” Id. (quoting Penn Township, 196 F.3d at 480). We remanded so that the district court could determine whether a gap “existed for all or for Nextel alone.” Id. at 266.
It is therefore clear that not only our opinion in Penn Township but also our opinion in Nextel West reject Omnipoint’s argument that the existence of a signifi*400cant gap must include the data from the applicant provider.
Omnipoint argues that our holding will promote monopolization and conflict with the pro-competitive objectives of the TCA (adopting Judge Rosenn’s view expressed in the original panel opinion). But nothing we say here suggests that the Zoning Board can deny all applications after the first. The issue was considered in Nextel West where we explained that the “effectively prohibit” and “unreasonably discriminate” provisions of the TCA work together to promote the expansion of wireless telecommunications networks. Id. at 264 n. 6. We stated,
The first provision (forbidding ordinances which effectively prohibit wireless facilities) aims to open up municipalities to wireless providers generally. The second provision (against unreasonable discrimination) seeks to ensure that, once the municipality allows the first wireless provider to enter, the municipality will not unreasonably exclude subsequent providers who similarly wish to enter and create a competitive market in telecommunications services.
Id. The area at issue in this case is already served by seven other providers so there is no basis for concern about monopolization.
Finally, in its Answer to the Petition for Rehearing, Omnipoint suggests that if we find that our decision in Penn Township would direct a decision contrary to that which it seeks, we should seek en banc review and explicitly overrule our Penn Township decision. Judge Rosenn has already explained that we are bound by our earlier opinions. Moreover, as we have just noted, it is not only Penn Township, but also Nextel West that informs our decision. Even if we were free to reconsider our earlier decisions, we would not change them.17 We do not read those decisions to authorize the township zoning boards to deny any application once the area is already served by another provider, which is Omnipoint’s restatement of the holding. Instead, we merely hold that a fact-finder determining the existence of a significant gap should examine whether other providers already serve the area. The fact that one applicant may have coverage problems is not determinative of whether there is a significant gap.
We conclude that the Magistrate Judge properly applied Penn Township and did not err in rejecting Omnipoint’s argument that the Township zoning ordinance has “the effect of prohibiting the provision of personal wireless services” in violation of the TCA.
VII.
Accordingly, we will affirm the order of the Magistrate Judge.
. PCS differs from "cellular” technology in that it allows for the digital, wireless transmission of video, text, and messaging information in addition to the transmission of voices.
. WCFs must be mounted at a minimum height, which varies depending on the topography and vegetation of the region, the amount of service area to be covered, and other factors. The proposed tower would be located within a thirty-feet by thirty-feet enclosure, surrounded by an eight-foot high chain-link fence topped with barbed wire. See ZHB Decision, A 668.
. At the time of Omnipoint's zoning application, the ordinance did not explicitly provide for communications towers. Easttown has since amended its ordinance to allow cellular communications facilities as a conditional use in business and multi-family conditional use districts. See 72 F.Supp.2d at 514 n. 2.
. The District Court did not rule on Omnipoint’s state law claims or its claim that the ZHB’s decision violated 47 U.S.C. § 332(c)(7)(B)(i)(II) by prohibiting wireless service. Omnipoint’s federal suit also included a civil rights claim under 42 U.S.C. § 1983 which Judge Katz denied because he ruled that the TCA’s remedial scheme was suffi*392ciently comprehensive to infer Congress' intent to foreclose § 1983 remedies. See 72 F.Supp.2d at 517. Judge Katz also found that Omnipoint had not shown a substantive due process violation. Id.
. This case involves a mixture of federal and state claims. The federal claims arise under the TCA. The Magistrate Judge had jurisdiction over these claims pursuant to 28 U.S.C. § 1331. The Magistrate Judge also had jurisdiction to resolve Omnipoint’s state statutory and constitutional challenges to the ordinance pursuant to 28 U.S.C. § 1367(a). See Omnipoint I, 248 F.3d at 108 n. 5.
. Omnipoint has not cited any Federal Communication Commission standard for call completion rates. See 189 F.Supp.2d at 264.
. The MJ’s April 1, 2002 decision was a final order for the purposes of 28 U.S.C. § 1291.
. Moreover, the MJ could reasonably have concluded that a tower in the business district would not have remedied Omnipoint's gap because Omnipoint explained that the maximum coverage of its technology's cell sites in the Township is two miles.
. A party seeking a use variance must show that the zoning restriction "inflicts unnecessary hardship on the applicant,” and: (1) that there are unique physical circumstances or conditions peculiar to the property that create the hardship; (2) that because of these circumstances or conditions, there is no possibility that the property can be developed in conformity with the zoning ordinance; (3) that the applicant did not create the unnecessary hardship; (4) that the variance, if granted, would not alter the essential character of the area; and (5) that the variance, if granted, would represent the least modification possible to the regulation at issue. 53 P.S. § 10910.2 (2002).
. Exclusionary impact can invalidate an ordinance without evidence of exclusionary intent. Overstreet v. Zoning Hearing Bd. of Schuylkill Township, 152 Pa.Cmwlth. 90, 618 A.2d 1108, 1113 (1992). If a party rebuts the presumption of constitutionality by presenting sufficient evidence that an ordinance is exclusionary, the burden then shifts to the state to demonstrate that the zoning ordinance bears a substantial relationship to public health, safety and welfare. Id.; see also Exton Quarries, Inc. v. Zoning Bd. of Adjustment of W. Whiteland Township, 425 Pa. 43, 228 A.2d 169, 179 (1967) ("[A] zoning ordinance which totally excludes a particular business from an entire municipality must bear a more substantial relationship to the public health, safety, morals and general welfare than an ordinance which merely confines that business to a certain area in the municipality.”).
. Omnipoint argues that Easttown Township cannot circumvent an otherwise exclusionary zoning ordinance by relying on the availability of a variance because of the high hurdles applicants must normally face to obtain a variance. Cf. Girsh Appeal, 437 Pa. 237, 263 A.2d 395 (1970). This argument has greater force when plaintiffs seek a use variance, as in Girsh Appeal, rather than a height variance. See 189 F.Supp.2d at 268. A use variance is more burdensome to obtain than a height variance. Hertzberg v. Zoning Board of Adjustment of the City of Pittsburgh, 554 Pa. 249, 721 A.2d 43, 47 (1998). Although Omni-point sought both a use and a height variance, its argument that the ordinance is de facto exclusionary necessarily focuses on the ordinance's height restrictions. Thus, the MJ properly rejected this argument.
. In Surrick, the Pennsylvania Supreme Court articulated several factors to be considered in applying the "fair share” principle in the housing context: (1) whether the area is a logical area for development and population growth; (2) the present level of development; (3) population density data; (4) the percentage of total undeveloped land; and (5) the percentage of undeveloped land available for development. See Sunick, 382 A.2d at 110.
. The Township contests this finding and argues that- the business district is larger than Omnipoint asserted it was at trial. However, the MJ adopted the 1.1% figure as a fact, see 189 F.Supp.2d at 269, and this finding is not clearly erroneous.
. Omnipoint’s argument to the contrary focuses on the ugliness of the monopole previously approved by the ZHB for placement at the Berwyn Fire Company and the relative ease with which a variance was granted in that case. Even if the Berwyn Fire Company monopole is uglier than the proposed Omni-point structure, that does not alter Omni-point’s intention to place its PCS tower in an area zoned for residential use. Furthermore, Omnipoint contests the ZHB’s finding that the proposed flagpole would be a "blight” that would "loom over residential communities.” Our role "is not to weigh the evidence contained in the record or substitute [our] own conclusions for those of the fact finder,” but rather "to determine whether there is substantial evidence in the record as a whole to *396support the challenged decision.” Cellular Tel. Co. v. Zoning Bd. of Adjustment of the Borough of Ho-Ho-Kus, 197 F.3d 64, 71 (3d Cir.1999); Omnipoint I, 248 F.3d at 106. Many community residents objected after seeing the plans and Omnipoint's land planning expert conceded that the tower would be "taller than most I have seen” in a residential area. ZHB Decision, A 670. The ZHB and the MJ both found that the 110-foot flagpole would be a blight that would loom over the residential community. This finding was supported by substantial evidence.
. As a general matter, courts of appeals will not consider arguments raised on appeal for the first time in a reply brief. United States v. Boggi, 74 F.3d 470, 478 (3d Cir.1996). Even if this argument were properly before us, it is not persuasive for the reasons set forth in the text.
. The district court held that the case was moot but we reversed and remanded for an adjudication on the merits. Id. at 259.
. It is of some interest that the decision in Second Generation Props. v. Town of Pelham, 313 F.3d 620 (1st Cir.2002), on which the dissent relies, expressed its disagreement with the decision in Penn Township and, as does the dissent, looked to qualitative aspects of competitive service to show a significant gap. However, Omnipoint did not produce evidence of qualitative shortcomings, if any, in the competitive service, and limited itself to evidence as to the quantity of calls.