Jim AB3CV wrote:
Any suggestions for finding the last station worked in a pack?
One of the problems with RTTY pileups, as with the other modes, is many
people call endlessly. That makes it difficult, as you won't hear (or see)
just one signal when it's time for the caller to xmit a report.
I played a bit with FSK-D and AFSK today. I was able to get FSK-D to decode
and display on the PC via the K3 Utility Terminal tab.
While listening to T32C working a split RTTY pack I realized that trying to
figure out which was the most recent worked station was a bit more difficult
than doing it
Jim,
It all depends on your software application(s). If you are using the K3
Utility display, then the only practical choice is FSK-D. If you are
using MMTTY, you have your choice between AFSK and FSK. FSK will
require a one transistor keying circuit, while AFSK requires
connection to your
The choice between AFSK and FSK is really about how you transmit, not
how you receive. With FSK, you feed an on/off signal to the K3 to
shift frequency, where with AFSK you send audio tones. You can
increase the receive bandwidth in FSK D mode just as you can in AFSK A
mode.
If you have KRX3, you
FSK is super simple to get going. No adjustments of audio etc. Let the
K3 do all the work. MMAVARI allows you when using N1MM to have up to 24
decoders going at the same time. While they may say up 2-10 the
decoders are probably only seeing the bandwidth of the radio which could
be 6k with
While they may say up 2-10 the decoders are probably only seeing the
bandwidth of the radio which could be 6k with the filtering etc.
MMVARI will only work with audio frequencies up to 3 KHz. The 6 KHz
filter (4.2 KHz max audio frequency in the K3) would be a waste. You
are better served by
It looks like I could use my KXR3/Split and feed the LR audio from the K3 to
two instances of MMTTY (or something) and then use CW memories to do the
sending rather than fiddling with the transmit audio and the misc beeps from
windows.
Is that correct?
Jim ab3cv
Yes. Exactly. The computer interface is like a memory keyer for RTTY.
It is more flexible if you have a computer close by and who doesn't
these days. Most logging programs even have RTTY built in so you can
send directly from your logging program. I use CommCat and I know many
others
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