[Milsurplus] RAX-1 Contract Information

[Mike Hanz]

On 11/2/2010 10:51 AM, Ray Fantini wrote:
> The strange 160 volt dynamotors may have been only available from units that may have been field striped, sounds strange but have seen the government do stranger things. Remember that the unit one and three receivers were only a year or two old if they robbed the dynos off them they were for all intents "new" although this is all still just speculation. The more you look into the whole RAX thing the less sense it makes. When it came to liaison radios BC-348 is king.

Well, that is open to debate, I suppose.  My particular favorite is the 
AN/ARR-7 (repackaged SX-28) because of its variable selectivity control 
and same operation as the SX-28 less the bandspread.  It is also 
officially an ELINT receiver, though as I recorded in a previous note, 
they were very scarce until 1945.

> As far as intelligence gathering radios, the APR-1 and APR-4 true ELINT radios. What was the lowest frequency they covered? Thought they went down to around 20 Mc to 100 Mc for the first tuning unit?

The lowest band tuning unit (TN-1/APR-1 and TN-16/APR4) had a range of 
38 to 95MHz (http://aafradio.org/countermeasures/APR-4.jpg ).  It was 
also primarily designed for radar intercepts, and the amount of noise in 
those high gain cascaded IF amplifiers has to be truly experienced to 
rule it out as a good HF intercept receiver. :-)

73,
Mike  KC4TOS