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

[Mike Feher]

Well, to me, LF and VLF is about the same. Regardless, you knew what I
meant. - Mike 

Mike B. Feher, N4FS
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960 


-----Original Message-----
From: Milsurplus [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of
Kenneth G. Gordon
Sent: Tuesday, January 12, 2016 11:36 AM
To: milsurplus
Subject: Re: [Milsurplus] [ARC5] BC-375ers: TU-22 Tuning Unit.

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

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