Originally Posted by Larry Kenney
Conditions sure have been different tonight. First of all, KNVN 24 which transmits from the hills east of Redding, 175 miles from here, was coming in like a local.
More info as of 12 midnight... I just received KCBA 35 (RF 13) Salinas, KUVS 19 (RF 18) Modesto, and a strong signal just below the cliff edge on channel 22. The only channel 22 on my list is KLFB, a 3.49 kW station from Salinas.
KNVN reached 24.8 dB SNR at one point about 11:40 pm.
Today Redding was 103 degrees F. San Francisco more like 56 (June gloom) season is kicking in. So I think that 50 degree temperature swing has some impact.
Here KSBW comes & goes with a simple attic antenna. That is an above normal condition.
KCBA follows the same pattern as KSBW, but slightly weaker.
that 91xg yagi I got free from craigslist, I guess I broke the balun, inside that black plastic housing. Weird and flimsy cheap design.
So that antenna is currently "out of order" Baluns' are one of the few parts I don't have extras in my toolbox. And I don't have the time to make one from coax.
I do actually have a home made balun for KSBW.. the loop is 31" ... And it works spot on.
To make one for KNVN the loop would be somewhere in the range of ... 7" for UHF ch69 to 12" for UHF ch14
But currently I see signal swings on the following UHF ...RF 25,31 & sometimes 48 (all from south)
On some occasions, KRCB RF-23 is wiped out, gone. For an extended period of time. So that station is the only one without 100% reliability.