Quote:
Originally Posted by Steve McVoy
Before you do a sound alignment, you should make sure the local oscillator is on the right frequency. These sets are tricky, since they don't have intercarrier sound. You can have an excellent picture and no sound if the local oscillator is off by as much as 1 mHz. The best way to tell is with a frequency counter.
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I measured mine (I think) on the Admiral. Given I have an accurate frequency counter and semi-accurate o'scope, what's the best procedure for measuring it? I was able to get a clip-on probe into the tuner area thru a service port, but touching anything in there is pretty disturbing to the picture reception. Is there a less invasive method?
I asked the same question on my thread, sorry to hijack Adam's. It's just that here is where Steve M's quote is.
Dave S, I got my counter on eBay for 130 bucks and I'm thrilled with it. It's utterly accurate at 15 Mhz and 1190 KHz and at all the TV RF and IF frequencies. Presumably everywhere else. It apparently goes into the GHz too if I ever need it. The eBay link is still there and is on the Admiral no-sound thread. The heathkit I got is also accurate, but only up to 20MHz -- not enough for TV work. I guess make sure it goes to 100MHz at least.