[Lowfer] rere:21.4 kHz

[Michael Sapp]

Hi All & Gary: Thanks for confirming NPM is active Gary. First time I heard it here this afternoon with the modest HD-1420 converter.  I do have Jay's list info---I wanted to know someone else was hearing a MSK sig on 21.4 versus a chance I had some image or spurious signal present.  I built up a new 9:1 matching transformer for the HD-1420 input with 4 BN-73-03 cores in-line and 6/2 turns ratio.  Previous transformer I was using had 3 bino cores in-line at about 1 dB loss at 20 kHz, so this version seems to be working slightly better although propagation likely matters as well. I need to build a second one though to measure the insertion loss.....

Tnx for the info....73  Mike wa3tts



>Mike, that station is NPM, in Hawaii. It was off the air quite awhile 
>during summar (see June9 note by KL7UK and included comments) but came 
>back on recently. Jay, W1VD has a nice listing of VLF callsigns and 
>frequencies at http://www.w1vd.com/vlf.html. The listings at 
>http://www.vlf.it/trond2/20-25khz.html, etc. in 5 kHz blocks are also 
>useful, as is http://www.classaxe.com/dx/ndb/reu/ (search below 100 kHz 
>and check "other" and "time").
-- 
73, Garry, K3SIW, EN52ta, Elgin, IL