[Milsurplus] RAX-1 Contract Information

[J. Forster]

Chain Home was low  20-50 MHz.

http://en.wikipedia.org/wiki/Chain_Home

-John

===============




> 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? So there was some
> interest in lower frequency coverage in ELINT systems. And last but not
> least have to wonder what use any radio in the 20 to 30 Mc band would have
> been in the ETO? What was the frequency of the Chain Home System?
> Ray Fantini KA3EKH
>
> -----Original Message-----
> From: Todd, KA1KAQ [mailto:ka1kaq at gmail.com]
>
>
>> Perhaps additional orders were for unit two only because that was all
>> that was used, it's a great assumption but maybe older "high band"
>> radios were striped from inventory and the dynamotors from them were
>> reused in the new unit two radios? May have been more cost effective to
>> replace the unit 2 radio when it failed than try to repair it?
>
> Both good possibilities. I thought perhaps they had a known inventory
> of spare dynamotors when they wrote the contract specs. It just seems
> like it would be difficult to write a specification for x number of
> sets without dynamotors if you had to rely on someone saving them off
> junkers or radios pulled from service, particularly not knowing their
> serviceability.
>
> All part of the mystery, but it clearly illustrates how things changed
> from contract to contract, and IMO adds support to the RAX-1 being
> used in the ELINT role at least in the first half of the war. With
> newer equipment and solutions available later, there would be less
> need for at least one of the sets. Same could go for any beacon or
> other uses associated with the lower frequency unit, leaving Unit 2 as
> a true liason receiver.
>
> More shots in the dark.
>
> ~ Todd,  KA1KAQ/4
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