[R-390] R390A Dropping Band

[chuck.rippel at cox.net]

Rats !  My print here at work has a seam right at the crystal number. 
No matter, 80% chance the crystal for the 3 AND 20 mhz bands has become 
inactive.

Replace that and it'll probably work fine.  One caution, the 3 mhz band 
has an alignment point for the 2 & 3 mhz bands.  If that alignment is 
grossly incorrect, both will suffer.

Am still standing by the crystal is the most likely suspect; a quick of 
the output with a scope at J-415 will tell all.


Chuck Rippel


> Date: Sat, 14 Apr 2012 13:26:52 -0500
> From: Nancy Green <jagreen3 at sbcglobal.net>
> Subject: [R-390] R-390A with deaf 3Mc band
> To: r-390 at mailman.qth.net
> Message-ID: <1C06FD6A-131F-44BE-97EA-B0C7F9CEC345 at sbcglobal.net>
> Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
>
> I have found a nice looking R-390A for a price I can afford. The 
> current owner said it worked well except the 3Mc band was not working. 
> Before I buy, I'd like to know what I'm up against. Any ideas what 
> would cause an R-390A to just drop one band?