Scott: Don't apologize for naive questions! There are plenty of us
newbies out here who appreciate
discussions about their rigs, as well as the really good answers that arise!
73,
david
New KX3 owner.
KC1DNY
On 7/16/2017 3:02 PM, richardscott w wrote:
I am a newbie when it comes to the digital modes and the KX3. The
following question may, therefore, be naive.
I have been experimenting using my Tentec transceiver to copy and send
APRS PSK63 beacons on 30 meters using the "APRS Messenger" software.
It seems to work fine using a Signalink USB sound card with the
program set for 2100Hz tones. I am tuned to 10.147.6 USB.
I want to try using the KX3 in PSK63 D mode to do the same thing, but
don't know what tone/shift the internal modem uses, so don't know what
frequency to tune the radio to. To quote WA8LMF:
"The actual transmitted RF frequency is the indicated suppressed
carrier frequency (i.e. "dial frequency") plus the audio tone
frequency (USB) -or- the suppressed carrier frequency minus the audio
tone frequency (LSB). The actual dial frequency you want WILL DEPEND
ON THE SIDEBAND YOU CHOOSE (either one will work) --AND-- ON THE
PARTICULAR AUDIO TONE FREQUENCY produced by the PSK program."
Up until now I have been using AFSK in USB mode to do these
experiments, and don't know how that translates when using a "direct"
PSK63 mode. How should I tune the KX3 to be spot on to the single RF
frequency for 30-meter PSK63 APRS operation, which is 10.149.700 MHz?
Any advice appreciated.
-Scott N3SW-
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