[R-390] AGC

[Roy Morgan]

Guido:

Find the Pearls of Wisdom IF deck section.:
http://www.r-390a.net/ <http://www.r-390a.net/>
http://www.r-390a.net/faq-refs.htm <http://www.r-390a.net/faq-refs.htm>
http://www.r-390a.net/Pearls/index.htm <http://www.r-390a.net/Pearls/index.htm>
http://www.r-390a.net/Pearls/IF_deck.pdf <http://www.r-390a.net/Pearls/IF_deck.pdf>

IF_deck.pdf

Search for “R390A AGC Problem” message from Chuck Rippel.

The problem turned out to be an intermittent short at a capacitor in the RF deck ACG circuitry.

Also read:
Why is it so? AGC SOLUTION

The 1N914 was at fault.


Roy Morgan
k1lky68 at gmail.com <mailto:k1lky68 at gmail.com>


> On Sep 10, 2018, at 10:18 AM, Guido Santacana <gsantacanav at gmail.com <mailto:gsantacanav at gmail.com>> wrote:
> 
> Greetings to all,
> 
> I acquired an EAC R390A a couple of years ago... an intermittent problem was noticed in the AGC with overload observed in strong stations at the med AGC position. Placing the AGC on slow and returning back to med produced the usual silence followed by a normal AGC function.