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Philco 97 - RF problem... HELP!
kiwi_steve
A Kiwi, called Steve
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Posts: 134
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City: Christchurch, New Zealand
#37

05-16-2016, 07:23 PM
(05-15-2016, 07:21 PM)Mondial Wrote:  Steve, regarding the problem with getting the RF circuit to tune, have you properly located the dial scale on the tuning cap?

From your description, it seems you have too much RF stage tuning capacity for a given receive freq, which is why your trimmer is all the way open and still wont peak. How does the dial freq calibration compare to the actual freqs of received stations?

Had some free time so shot home for a tinker (advantages of living 3 minutes from work) - Nope - no position of the tuning cap that I can get the OSC trimmer to peak on will allow me to peak the RF trimmer. I'm about to pull all the cans apart and go over them with a fine tooth comb.

Oh - and the volume thing was a loose joint on a mica cap I had temporarily soldered across another one (the 110pF cap off the BC RF TX)... removed it now because it didn't affect the tuning in any way.

Steve
There are no personal problems that can't be overcome with the liberal application of high explosives
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Messages In This Thread
Philco 97 - RF problem... HELP! - by kiwi_steve - 05-01-2016, 09:38 PM
RE: Philco 97 - by KCMike - 05-01-2016, 09:53 PM
RE: Philco 97 - by kiwi_steve - 05-01-2016, 11:59 PM
RE: Philco 97 - by kiwi_steve - 05-02-2016, 03:02 AM
RE: Philco 97 - by kiwi_steve - 05-02-2016, 03:18 AM
RE: Philco 97 - by kiwi_steve - 05-02-2016, 11:50 PM
RE: Philco 97 - by kiwi_steve - 05-03-2016, 02:41 AM
RE: Philco 97 - by kiwi_steve - 05-07-2016, 08:27 PM
RE: Philco 97 - by Mondial - 05-08-2016, 10:25 AM
RE: Philco 97 - by HOTWIRE - 05-08-2016, 11:44 AM
RE: Philco 97 - by kiwi_steve - 05-08-2016, 12:27 PM
RE: Philco 97 - by HOTWIRE - 05-09-2016, 09:55 AM
RE: Philco 97 - by kiwi_steve - 05-09-2016, 03:55 PM
RE: Philco 97 - by HOTWIRE - 05-09-2016, 12:44 PM
RE: Philco 97 - by HOTWIRE - 05-09-2016, 05:01 PM
RE: Philco 97 - by HOTWIRE - 05-09-2016, 05:28 PM
RE: Philco 97 - by kiwi_steve - 05-09-2016, 05:49 PM
RE: Philco 97 - by kiwi_steve - 05-09-2016, 05:31 PM
RE: Philco 97 - by HOTWIRE - 05-09-2016, 07:51 PM
RE: Philco 97 - by kiwi_steve - 05-09-2016, 08:31 PM
RE: Philco 97 - by kiwi_steve - 05-10-2016, 01:32 AM
RE: Philco 97 - by HOTWIRE - 05-10-2016, 05:28 AM
RE: Philco 97 - by kiwi_steve - 05-10-2016, 06:33 AM
RE: Philco 97 - RF problem... HELP! - by HOTWIRE - 05-12-2016, 05:20 AM
RE: Philco 97 - RF problem... HELP! - by morzh - 05-12-2016, 07:34 AM
RE: Philco 97 - RF problem... HELP! - by HOTWIRE - 05-12-2016, 08:58 AM
RE: Philco 97 - RF problem... HELP! - by Mondial - 05-15-2016, 03:18 PM
RE: Philco 97 - RF problem... HELP! - by Mondial - 05-15-2016, 07:21 PM
RE: Philco 97 - RF problem... HELP! - by kiwi_steve - 05-16-2016, 07:23 PM
RE: Philco 97 - RF problem... HELP! - by HOTWIRE - 06-20-2016, 09:38 PM



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