Even on phone...that half the band on one switch setting and half on the
other is
extremely inconvenient. Perhaps it did not matter for military/MARS use, but
for the
average ham....the Collins is built nice, but a SB102 does so much
more...and a good TR4 is light years ahead of it!!
....Dave
"Edward Knobloch" wrote in message
...


wrote:
OK, per advice from others in this newsgroup, I am beginning my search
for a good Collins KWM-2A.

snip

Rick originally said he wanted SSB plus c.w. capability.
The KWM-2 is a fine SSB transceiver, but it's c.w.
operation is the pits. It keys an audio oscillator
(about 1.5 KHz)into the mic circuits to generate c.w.,
resulting in "artifacts": the (suppressed) carrier,
and a weak keyed c.w. spur 3 KHz below the main
keyed c.w. output. Unless you have perfect-pitch hearing,
it is impossible to zero beat someone on c.w.
using a KWM-2. Also, there is only the 2.1 KHz wide
mechanical filter, no additional c.w. filter provision.

Lack of RIT (receiver incremental tuning) is another
show-stopper on c.w. You must listen to the other
fellow's signal with a 1.5 KHz tone, if you wish
to be near zero beat. Most ops prefer to listen
to a lower pitch, about 700 Hz.

73,
Ed K4PF

And then there is the direct competitor to the KWM-2(A)... Hallicrafters
wonderful late model SR-400A.... arguably a better receiver... also has
Teflon wire etc... great audio and useful CW and a CW filter. But perhaps
even harder to find then a good KWM-2A.

I have a great example on my web page.... see sig line.

Mike, W9WIS

--
Michael Melland, W9WIS
Winneconne, Wisconsin USA EN54pc
qrp-l #1656 - qrparci # 9875 - iparc #252
ars #1075 - http://webpages.charter.net/w9wis/