[AMRadio] another SX-28 question

[w5sum]

sorry gang about the language.. I thought that was going just to jeff LOL

Happy New Years ya'll <blush>

R

On Wed, 31 Dec 2003 09:48:30 -0500, w5sum wrote
> good morning Jeff
> 
> yes there is an AVC switch and it is on... I think the problem is, 
> that this is a non linear pot I dug up... measuring the resistance,
>  it moves slowly for just a cunt hair, then it JUMPS quickly... I'm 
> going to change this out first
> 
> Happy New Year to ya!!
> 
> Ronnie
> 
> On Wed, 31 Dec 2003 07:58:36 -0600, Geoff Edmonson wrote
> > > the RF gain control was not working at all. I found a pinched wire that 
> was
> > > grounded.  This was the wire going to the cathode resistor of V-1. I 
fixed
> > > this, and even put a new pot in there for the RF Gain. It works BUT.. 
all
> > > you have to do is just barely turn it and it blanks out the front end.
> > > Could one of the cathode resistors have changed value, canceling out the
> > > work of the rf gain control? R-3 to V-1 or R8 to V-2? Or, possibly, C14 
on
> > > V-1 or C18 on V-2?
> > 
> > Just a silly-assed question, Ronnie - mainly because I don't remember...
> > but is there an AGC control switch on the front of the SX-28?  It 
> > should be ON.  Without the AGC circuit being active, you could have 
> > the same effect - any signal would send the front-end to saturation.
> > 
> > Happy New Year!
> > 73 = Best Regards,
> > -Geoff/W5OMR
> > 
> > -- 
> >   7:56am  up 2 days 14:23,  4 users,  load average: 0.17, 0.65, 0.84
> > 
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> 
> The "AM" voice of Shreveport, Louisiana USA
> formerly WN5AIA and WB5AIA
> I got my Extra Class the old fashioned way... I earned it!
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The "AM" voice of Shreveport, Louisiana USA
formerly WN5AIA and WB5AIA
I got my Extra Class the old fashioned way... I earned it!