[R-390] R-390a AGC Issue/Observation
Dennis Wade
sacramento.cyclist at gmail.com
Tue Apr 14 19:12:38 EDT 2009
OK..my bad...its been a while since I troubleshooted my IF deck. That
turned out to be a leaky mech filter.
...retreating back to the woodwork....
D.
On Tue, Apr 14, 2009 at 3:57 PM, ANTHONY CASORSO <canthony15 at msn.com> wrote:
>
> No. It is correct. Look at fig 38 on page 71 of TM11-856a. The path from
> the AGC line to ground in the IF deck is through R547 (220k), then R546
> (180k), and then to ground through R545 100k.
>
> Tony
>
>> Date: Tue, 14 Apr 2009 15:28:36 -0700
>> Subject: Re: [R-390] R-390a AGC Issue/Observation
>> From: sacramento.cyclist at gmail.com
>> To: canthony15 at msn.com; r-390 at mailman.qth.net
>>
>> On Tue, Apr 14, 2009 at 8:21 AM, ANTHONY CASORSO <canthony15 at msn.com>
>> wrote:
>> >
>> >
>> >
>> > AGC line resistance to ground on the IF deck alone is about 500K. With
>> > everything plugged in, it reads 350K-ish if I remember correctly.
>> >
>> >
>>
>> This resistance to ground for the AGC line sounds too
>> low...should be a lot higher.
>>
>> D.
>>
>>
>> --
>> Dennis L. Wade
>> KG6ZI
>> Carmichael, CA
>
--
Dennis L. Wade
KG6ZI
Carmichael, CA
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