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Post by mark on Oct 9, 2020 0:39:52 GMT
Here's my new frequency counter taking a reading from the Procaster right from the antenna screw to the center of the UHF jack on the counter using a simple alligator clip jumper to a banana plug for the UHF center. Adjusted perfect....no more "beating" at night with other stations. 1630 kHz dead on!   |
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Post by Boomer on Oct 9, 2020 21:14:22 GMT
Delta, not the hurricane
Lookin' good! That should beat the beat down. Surely we're living in a great age where such stability is possible. Many hobby transmitters used VFO control in the past, like the famous Knight Kit, and we've come a long way in 50 years.
Delta Electronics, I wonder if that's the same company that builds AM stereo exciters for radio stations?
Your Procaster looks like the same model that I have. From personal experience, I like mine too. For me, 1630 is KCJJ from Iowa, I can't think if I've heard any other station on that frequency.
Boomer
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Post by mark on Oct 9, 2020 23:56:18 GMT
You must be close to KCJJ so it's a daytime station where you are? Here it's just a nighttime station and generally fades in and out and I still come in quite good over it around my area. 1630 is one of the quietest nighttime spots here. Just that one station to compete with. I don't know what else they(Delta) make but you can look them up. The Procasters haven't changed except for the cabinet material....used to be steel(as he told me) and much heavier before it went to aluminum but looked the same.
I don't have the tubular antenna that comes with it as I just use the wire clipped to the antenna post.
KCJJ is the only station that I have to not beat with on 1630 so I come through cleanly and not drowned out. I come through nicely if KCJJ not coming in to strong.
But that frequency adjustment is very touchy to get it right on. Had to work at it to get it better than 9Hz accurate.
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Post by Boomer on Oct 21, 2020 2:19:44 GMT
I'm not too close to KCJJ, just in the States south of you, and they come in later in the evening as darkness falls in their area.
It can be touchy to get the frequency close, since when you think about it, stations have to be within 20 hertz of channel center, out of 1,630,000 hz, and even closer to have less beat.
Commercial stations can use high stability outside frequency standards, the most popular being GPS. I don't know that many stations use a frequency standard, just the crystal that's in their transmitters. There was a proposal for 1 hz stability in the AM Revitalization plans, but I didn't see any debate on that point at all, so maybe stations and the NAB weren't interested.
Boomer
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