[OZAPRS] HF freq ?
Ron Graham
rongraham at magnet.com.au
Tue Jan 13 10:22:37 EST 2004
Hi All,
Note this subject was discussed a few weeks ago .. re-read what
postings I kept, but can't find the vital clue. In a couple of days, we
are
off on an extended trip to Tassie. Byon has kindly agreed to supply a 300
baud beta test chip for a TT. I do not have a 300 baud RX setup, so I
can't
net to the desired 30m HF freq.
So I need to know the actual surpressed carrier freq. used on
30
metres. The 300 baud TT uses 2100 & 2300 Hz tones. I assume I deduct the
mean of those 2 tone frequencies (2200 Hz) from the surpressed carrier
freq. to arrive at the actual USB dial setting (using Icom 706 MkII-G
radio)
Alternatively, I could use the actual 10 MHz RF mark & space frequencies
..
if someone knows these?
On previous postings I do note the actual 40m freq tone pair
being given as 7.0344 & 7.0342.
Thus, for 40m I deduct 2300Hz from 7.0344 MHz giving a USB dial setting of
7.0321 .. correct?
Not much time to arrange this .. hopefully chip will arrive in
time. Due to the fact that it is difficult/impossible for me to get any
feedback re the system working correctly, I am hoping for this simple
solution!. Just set on freq. and away we go! Will be on the road about 2
1/2 months, so should be a great opportunity to add some interest to HF
APRS here in VK.
Thanks, Ron, VK4BRG.
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