[R-390] Tell me about Single Sideband Converters

[Roy Morgan]

At 01:49 PM 6/28/2005, you wrote:
>Currently there is a CV-591A/URR model MSR-4 on ebay

Craig,

I cannot find it. Can you send an item number, or correct text from the 
listing title?

>... probably doesn't work. Bid is now at $300 and will probably sell 
>higher. Looks like a hint of blue paint on the face. Doesn't look like a 
>good buy to me.

Nope, it does not, But.. most of them need their caps replaced big time, 
and often have bad relay contacts that need attention. Nothing impossible, 
but any CV-591 that works right off the bat has had SOME attention lately.

>...several different Single Sideband Converters were used with the 
>R-390A.... which one works the best and what is the going price for one in 
>working condition?

They all work more or less well, but others have had more experience with a 
variety of them and can tell you more.

I've not followed prices lately but here are some guesses on the ones we 
hear most about:
  - CV-591, complete and working or restorable:  $300 and up
  - HC-10 Hammarlund separate box: $400 and up
  - The SPC-10 (rack mount - meant for use with the SP-600): $600 and up

That's all pretty discouraging, BUT, if you have a rice box that covers 455 
kc, use a 60 db pad and run the IF output from your R-390 into the 
receiver. Folks who've done this report good results.  All you need is a 
bit of wire and a couple of resistors.

Roy

- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
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