Re: K3 FSK D Mode: possible Bug?

Posted by N6JW on Sep 27, 2010; 5:10am
URL: http://elecraft.85.s1.nabble.com/K3-FSK-D-Mode-possible-Bug-tp5571721p5573611.html

Thank you to each one who responded, both on and off list.

I was particularly surprised to see a message this morning from
Wayne (N6KR) himself, indicating that he would try to reproduce
the problem on his side.

To hear back directly from the chief engineer who designed your rig, just
a few hours after reporting an issue (and on a Sunday morning at that!) . . .
well, this is what makes Elecraft a very special company indeed!!

One further note: I discovered while "running" later today, that the
problem will also occur after using the paddle to send a call sign live,
and then pressing a memory to send the rest of the exchange.  The
significant thing is that the carrier does not drop out between the two.
So, the problem is routinely reproducible, either by 'chaining' memories,
or by sending with the paddle followed immediately (without drop of carrier)
with a memory.

I will try to keep the list informed as to what develops on this front.

Thanks,

73

John
N6JW
K1, K2, K3 & P3

N6JW wrote

Briefly stated, here is the problem: While in FSK D data mode,
if one is sending a "chained" stored message, upon returning to
receive, the audio frequency is "offset" by (I believe) the selected
Mark pitch frequency (e.g. 915hz or 1275 hz).  The 'offset' remains,
but some commands can reset things to normal.