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Of the major antenna manufacturers, only Antennas Direct has brought products to market optimized for the truncated UHF band. These would be the ClearStream Micron, ClearStream C1, ClearStream C2, and ClearStream C4 which are all optimized for the post-transition U.S. UHF band.
The ClearStream C5, which is derived from the C1, is available as a separate add-on unit for VHF 7-13 for areas that need high-VHF performance in addition to UHF reception.
There are several hobbyist-created antennas, well discussed at the Digital Home Canada website, that are available as DIY projects for UHF that have been re-scaled.
To date, I am unaware of any 7-51 combo antennas that may be on the market. As manufacturers who sell into Canada will tell you, it is still premature to abandon UHF performance up to channel 69 as Canada still has more than a year remaining before their UHF spectrum is reduced.
Please keep in mind that rescaling an existing 14-69 UHF antenna to cover 14-51 more effectively will cause the antenna to grow by about 20% for similar performance. As many legacy UHF designs peak strongly at the high end of the UHF band (700 MHz or more), the re-scaling moves the gain curve lower in the UHF band and the narrowed bandwidth allows for greater efficiencies.
Antennas Direct Tech Support
Last edited by ADTech; 11-May-2010 at 6:26 PM.
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