RadioBanter - View Single Post - ARRL . . Readies Bandwidth Recommendations

April 15th 05, 03:08 PM

wrote:

Dave Heil wrote:
Michael Coslo wrote:

Now that you mention it, W1AW's Morse practice sessions on 80
meters
wreck psk31 too. Most of the time, Morse and PSK coexist pretty
well,
but their signa has some nasty looking spurs on it that cover the
whole
segment.

Do you know that for sure, Mike or is the W1AW sig so strong in your
area that it overloads your transceiver? Have you actually switched
in
an attenuator after making certain that your noise blanker is
switched
off?

Side issue here but I agree with Dave, something 'snot right in State
College. The W1AW bulletins and code practice sessions are transmitted
by big-bucks squeaky-clean commercial Harris SW transmitters. Yank the
PL-259 out of the back of yer xcvr and stuff the end of ten feet of
wire into the xcvr coax receptacle and tune around W1AW again and see
if you're still hearing spurs from W1AW. If yes your xcvr front end
probably has "issues".

One of the things I forgot about in responding to Mike is that there are
some newer rigs in which the noise blanker is never really out of
circuit despite the position of its on/off switch. Your idea of the
short piece of wire would certainly help, especially if Mike has one of
those rigs.
I've never detected spurs on W1AW's sigs on any band.

Dave K8MN