[Milsurplus] [ARC5] BC-375ers: TU-22 Tuning Unit.

[Kenneth G. Gordon]

On 12 Jan 2016 at 0:00, Mike Morrow wrote:

> Mike F. wrote:
> 
> > Someone mentioned that it would be ideal for VLF work,

Well, I, at least wouldn't say "VLF work": LF work, surely, though. I have 
been operating a forum dedicated to the 600 meter band for many years 
now. If the FCC would ever get "off its duff" we would have a 7 kHz section 
of that band for general ham use. It was authorized world-wide at some 
recent WARC conference. This is the "new" 630 meter band.

> > but then so
> > would the TU-26...
> 
> I suppose they both would NOT work equally.  Is there much besides old USN
> receivers (like the RAK, RBA, SRR-11, WRR-3, BRR-3, etc.) that will reach down
> to the *high* end of the VLF band of 30 kHz?  :-)

Yes. Stoddart "Noise Meters" of various models for some. I have several of 
the Stoddart models, reaching down to something like 5 kHz.

> Mike / KK5F
> (AN/BRR-3 receivers with a TOTAL frequency coverage of 10 to 30 kHz were the
> most important radios on my ballistic missile submarine more than 40 years ago. 
>  We had no transmitters for VLF, but TACAMO aircraft did.)

Ah! Interesting! I had no idea. Thanks,

Ken W7EKB