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#1
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FA: Heathkit Balun Coil Set, model B-1. 1950's vintage, for HF ham bands.
Here's the URL: http://cgi.ebay.com/ws/eBayISAPI.dll...m=30686910 87 |
#2
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"LJ" wrote in message
om... FA: Heathkit Balun Coil Set, model B-1. 1950's vintage, for HF ham bands. Here's the URL: http://cgi.ebay.com/ws/eBayISAPI.dll...m=30686910 87 Power rating? Ratio? Connectors? |
#3
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William Warren wrote:
"LJ" wrote in message om... FA: Heathkit Balun Coil Set, model B-1. 1950's vintage, for HF ham bands. Here's the URL: http://cgi.ebay.com/ws/eBayISAPI.dll...m=30686910 87 Power rating? Ratio? Connectors? The manuel says rated at 250 watts transmitter input power, so I would guess that would mean about 200 watts output. I've run 500 watts output into the set I am using and had no heating or arcing. Remember, when they rated something years ago, they were usually very conservative and these are open air coils - there is no core. Ratio can be set for 1:1 or 4:1 by minor rewiring. I've always run them at 4:1 and fed ladder line. Input is a PL259, output is two ceramic feed through terminals with nuts. I have two of the units and wouldn't give them up for anything. |
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