[Boatanchors] Surplus Conversion Manual" Volume II

[WA5CAB at cs.com]

Dick,

Page 47 is a 10-meter conversion of the GO-9 HF transmitter.  Where they 
changed the 803 to an 813.

Page 48 is a garden variety power supply schematic.

The photo in the Vol 2 shows a GO-9 (or at least a GO-(*) ).  The main 
diference between it and the TBW-(*), at least as far as external appearances 
go, is that the TBW's came in waterproof cases.

I offer for sale a reprint of one of the original TBW manuals, the one on 
TBW and TBW-1.  NAVSHIPS 900,246, $26.50 plus shipping.  AFAIK, or at least 
as far as I have ever found, the later model manuals are all marked 
PRELIMINARY, and a final NAVSHIPS never got done.  If anyone knows differently, I'd 
like to have that information.

Differences between the various models from TBW to TBW-5 consist (only) of 
the following:

Whether the manual included information on the associated gasoline powered 
800 cps generator or not.
Slight change in case external dimensions and construction @ TBW-2.
Contractor.

The above is based upon a comparison of the TBW, TBW-1, TBW-4 and TBW-5 
manuals.

I still have a couple of PE-206 800 cps inverters.  Output is only 80-85 
VAC but one and possible two people who have bought them have successfully 
used them with the addition of a step-up autotransformer to operate the rigs.  
Seems that I recall one or two people also having the Onan generators.  And 
maybe one or two who had acquired one of the aircraft engine driven AC 
generators.

In a message dated 11/27/2009 11:40:05 AM Central Standard Time, 
wf2u at ws19ops.com writes: 
> I assume you want to put the  TBW on the air. I suggest you purchase,  
> borrow, copy/scan or whatever, the original Navy manual for it. I know  
> the hurdle is the 115 VAC @ 800 Hz power requirement - provided you  
> have the original power supply with it. There are a few solutions.  
> Either you find (eBay is a source) of a powerline frequency converter,  
> or a suitable generator (usually surplus) you can spin with a 115 VAC  
> @ 60 Hz standard electric motor. In the absence of 800 Hz prime power,  
> an external power supply can be cobbled together to duplicate the  
> power outputs of the original power supply, and feed it into the unit   
> through minimally invasive methods, thinking of a.) the unit looks  
> nice complete, b. in the future someone would want to buy the set from  
> you with the original power supply intact, and c.)eventually you may  
> find an 800 cycle power source.
> There are a number of TBW's are on the air and it's a nice and fairly  
> stable transmitter.
> Now, you have to start looking for the matching RBM receiver system  
> consisting of 2 receivers - one covers 0.2-2mHz and the other 2-20mHz,  
> with either a dynamotor or a rectifier power supply and a control unit.
> 
> Having fun yet?
> Good luck with it, hope to hear you on the air with it on one of the  
> "Old Military Radio" nets.
> 
> 73, Meir WF2U
> Landrum, SC
> 
> 73
> 
> 
> 
> Quoting "Richard W. Solomon" <w1ksz at earthlink.net>:
> 
> >Does anyone have a scanned version of Volume II that
> >has pages 48 and 49 ?
> >It seems my copy is missing those and it has info on
> >the TBW that I am looking for.
> >
> >Thanks, Dick, W1KSZ
> 

Robert & Susan Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480