[Lowfer] Moved to 630 meters 474.2 dial WSPR 2 for remainder ofevening..,

JD listread at lwca.org
Sun Dec 29 13:53:15 EST 2013


>>> I have PSK 31 loaded in one of the PC's.  Also Navtex might be 
>>> ood...  --  Ran it a couple years ago on 500 and was copied out west no 
>>> problem

I'd be interested in trying both on 74 kHz.  Think I'd like to start with 
PSK31, to sort of establish a baseline of what's possible.

Since Navtex requires about 10 times the bandwidth, it will make tuning more 
critical...both at the transmit end if your antenna system Q is over about 
200 at LF, and at the receive end because my CW filters are so narrow.  I 
have a bit of trouble with full power Navtex signals because the filters 
make tuning so touchy.  Thus, it might be good to start with PSK and "work 
my way up" in bandwidth if that pans out.  (Might even have to dig out 
Kenwood #2, which has the wider CW filter, and see if that one still works.)

Today the temperature is 22 and is not expected to rise further, so it will 
take something other than everyday modes to get me back to the field, and 
only until sunset at the latest!  Too bad I wasn't available in time for the 
JASON test this morning.  I quite enjoy that one.

John 



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