[TMC] GPR-90 what were those engineers thinking ???

[Gary]

Funny this subject came up as I just got done with my GPR-90 this last 
weekend. I also had to remove the box and I thought it mite be the xtal. 
Come to find out, the ground lug on L-19 was never soldered from the 
factory. I resoldered it and did do a change of all the disc caps (one was 
bad) and also changed out the 120 puff and the 220 puff cap inside of L-19. 
Reinstalled, done the alignment and now it works great.
Regards,
Gary...WZ1M
----- Original Message ----- 
From: "Tony Faiola" <faiola at ieee.org>
To: "Mark Foltarz" <Foltarz at rocketmail.com>
Cc: <tmc at mailman.qth.net>
Sent: Tuesday, February 03, 2009 8:36 PM
Subject: Re: [TMC] GPR-90 what were those engineers thinking ???



On Feb 3, 2009, at 4:59 PM, Mark Foltarz wrote:

> I have a GPR 90 I am working on. The usual items were addressed -
> caps, noisy swithces etc.
>
> The radio came nicely on the lower three bands. But bands 4 , 5 and
> 6 are double conversion and they are dead
>
> Turns out  the second oscillator is dead. It is not the tube. I'm
> pretty sure the crystal is shot for the oscillator.
>
> But what get me is the real poor design for the enclosure that
> houses the second mixer, oscillator and buffer.
>
> It is a night mare to remove. I have no idea what they were
> thinking when they  thought  up this poor arrangement.
>
> They must have thought it would never  go bad...    We did Mark!!!
> Have fun.  Ciao, Tony, K3WX (ex W2GBS).
>
>
>
> de KA4JVY
>
> Mark
>
>
>
>
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