[Milsurplus] VLF Frequencies

[Al Klase]

Mike,

I've been messing around with this a bit since this thread started.

Here's a freq. list I really like:  https://www.mwlist.org/vlf.php

I'm pretty crippled here in Jersey City, with outrageously strong NYC AM 
stations.  Even so I can do a bit of VLF receiving.

The following recording was made with half my low 100-foot doublet 
feeding an SDR-Play receiver via a 60 KHz low-pass filter. Software was 
HDSDR.  I feel that in our area, NAA on 24 KHz is the place to start.  
WWVB on 60KHz  is also amazing strong, and easy to recognize (1 Hz short 
and long pulses).

This screen capture should give you some idea what your listening for. 
(CW mode)
http://www.ar88.net/vid/NAA%20+%20WWVB.m4v

Stations recently logged on a 3-foot 16-turn shielded loop in the attic;


•21.4 KHzNPM Lualualei, HI
•24 KHz         NAA Cutler, ME
•24.8 KHzNLKJim Creek, WA
•25.2 KHz    NML4Lamoure, ND
•37.5 KHz    NRKGrindavík. Iceland
•40.8 KHzNAUPuerto Rico*
•60 KHz        WWVBFt. Collins, CO
62.6 KHzFUGFrance??

These are ID by modulation and exact frequency.  The SDR is helpful at this.

Fire up your receiver!

Al


On 8/8/2019 11:59 AM, mike christie via Milsurplus wrote:
>
> Thanks Guys for the information on the VLF frequencies.  I’m going to 
> put a long wire antenna this weekend and see what I can pick up. The 
> information will give me a starting point.
>
> Mike
>
> W1ZFB
>
>
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-- 
Al Klase – N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/

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