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  #16  
Old 05-12-2016, 08:00 PM
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Been running a channel 10 AM-60-550 And channel 12 AM-60-860 for a few years now. Both have custom length dipoles on RG-6 runs on the 3rd floor attic space of a residential house. On a batt set such as my little Sony from the 90s it is incredible how fine the propagation is. Within the house, all sets, from a 1950s Regal/RCA to a 2004 sony wega will pick up the signal with very little antennae.
I use the -860 BT to momentarily broadcast channel 34 UHF with a crude bowtie to test UHF reception of newly bought sets.
I find that the 'lead dress' of your BT antenna is crucial. For me the trick was to route all power and a/v cords away from the antenna run.
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Old 05-12-2016, 08:18 PM
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Thought I'd share some quick pics of the results possible since channel 12 was already running--
1978 Sony trinitron 12" solid state and 1966 Emerson (Admiral) 19" tube both have barely any antenna ( sony has a short run of 300ohm twinlead and the b/w has its builtin monopole not even extended) these are in a basement some 50+ feet from the antenna.
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  #18  
Old 05-12-2016, 08:19 PM
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  #19  
Old 05-12-2016, 08:49 PM
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My AM60-450 will do a block radius on ch7 at max output (field tested with a sony watchman with a paddle CRT).
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Old 05-12-2016, 09:10 PM
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Oh, no doubt! I have a Bradford Ranger 505 (Matsushita) from 1976 plugged into my car stogey lighter and with the built in whip it will show a snowy bw image with audio at almost 2.5 blocks!
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  #21  
Old 05-12-2016, 10:14 PM
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When I bought my AM-40-550, it was the cheapest on ebay at the time. I guess I should have waited and bought a 60-550 or similar. I need one with higher output strength. I have tried countless times, but for me trying to get VHF is futile.
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Old 05-12-2016, 11:16 PM
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Quote:
Originally Posted by TUD1 View Post
When I bought my AM-40-550, it was the cheapest on ebay at the time. I guess I should have waited and bought a 60-550 or similar. I need one with higher output strength. I have tried countless times, but for me trying to get VHF is futile.
I've got a pair of AM40 series units too and I can get about 1.5 home lots radius on VHF with them. Your unit likely has a defect or is not being properly set up for VHF...It should be able to send at least 50' with a properly made and placed custom cut antenna.

You may want to try a BT BAVM series fixed channel modulator. They are cheap and I've gotten results midway between the 40 and 60 series from them. I recommend channel 7 as that seems to be the strongest with BT products on the VHF band.
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