[R-390] Baker and Williams

[AI2Q]

I have a Hammarlund HC-10 hitched to my 51J-4. If someone's interested, and makes me an appropriate offer, I might be persuaded to part with it. I even have the original owner's manual.

Vy 73, AI2Q, Alex in Maine  
http://users.adelphia.net/~alexmm/ai2q.htm


  ----- Original Message ----- 
  From: Roy Morgan 
  To: Charles B ; r-390 at mailman.qth.net 
  Sent: Monday, November 22, 2004 11:39 AM
  Subject: Re: [R-390] Baker and Williams


  At 07:44 AM 11/22/2004, Charles B wrote:
  >Hi all,
  >
  >Someone told me that they obtained a SSB outboard unit for the R390A from 
  >Baker And Williams.  I went to B&W's web page and couldn't find anything 
  >there concerning this?  The fella who mentioned the unit has a problem 
  >answering email, so I was wondering if anyone out there on this reflector 
  >has any information about this unit?

  Chuck,

  The B&W unit is the "Model 370 Single Sideband Receiving Adapter:"  It 
  operates on the frequency conversion principle, with its low IF frequency 
  at 17 to 20 Kc.  Upper or lower sideband is selected by changing the mixing 
  frequency.  A filter at 17 Kc selects the desired band of 
  frequencies.  There is a 17 Kc injection oscillator to re-inject the BFO 
  signal for SSB, CW, or enhanced am operation.  The thing contains an audio 
  amplifier (6V6) and speaker.

  These units seem quite hard to find. I have one, one other fellow I know of 
  has one also.  I also have an original manual, and will be happy to provide 
  copies of it to anyone who needs one (it is not on the BAMA site - When I 
  get the time, I'll scan it and send it in for all to have.)

  Other sideband adapters that can be used with the R-390A or other radios 
  with 455 kc IF frequencies include:

  Hammarlund HC-10: quite rare and expensive
  Hammarlund SPC-110 rack mount equivalent: even more rare and expensive
  Military CV-591 (aka MSR-4) made by TMC sideband adapter
  Any modern rice box that will receive SSB and tune to 455 Kc.

  Roy


  - Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
  7130 Panorama Drive, Derwood MD 20855
  Home: 301-330-8828 Cell 301-928-7794
  Work: Voice: 301-975-3254,  Fax: 301-948-6213
  roy.morgan at nist.gov --