KWM-2 vs KWM-2A
 

What are the differences between the KWM-2 and the -2A?

Was there a -2B?

Thanks...

Rick WA1RKT

wrote


What are the differences between the KWM-2 and the -2A?

Was there a -2B?

**** Negative or should that be "not 2B" :-)
Brian Goldsmith.

What are the differences between the KWM-2 and the -2A?

If I recall correctly, the 2A has plug in relays and teflon coated wiring. The
2 had hard wired relays and were notorious for failing. There are other
differences as well. You should be able to find more information at
www.collinsradio.org

I believe that the 2A has provision for an extra crystal pack allowing for
extra frequency coverage.

wrote in message
...

What are the differences between the KWM-2 and the -2A?

Was there a -2B?

Thanks...

Rick WA1RKT

KWM2s had wired in open frame relays, and only the usual ham
bands 3.4-3.6-3.8-4, 7.0-7.2-7.4, 14.0-14.2-14.4, 14.8-15.0,
21.0-21.2-21.4-21.6 and 3, 200KHz chunks of the 10M band.

The KWM2A had the above bands, plus an equal number in the same ranges
that could be any frequencies you want. The KWM2A also had plug in
relays, to ease replacement, but the replacements are becoming rather
rare due to the high impedance HV windings.

In later times there was a retrofit kit for the KWM2 that added the
plugin relays, and the extra band segments. There were also a variety
of noise blanker, Q-multiplier, external VFO, and other modification
kits once available. It is an extremely well documented radio.

It is a very nice radio. I like mine.

-Chuck, WA3UQV

wrote:
What are the differences between the KWM-2 and the -2A?

Was there a -2B?

Thanks...

Rick WA1RKT

I have a round emblem KWM-2. It has plug in relays and teflon wiring. It
does not have the extended frequency capability. That capability is the
only difference. de Fred

Correct...except they kwm didn't work everywhere. They did not work on the
VFO freq range of 5 Mhz.

Great SSB radio's. Not so hot on CW with that 1.5kc offset..hi.

Dan/W4NTI

"Chuck Harris" wrote in message
...
KWM2s had wired in open frame relays, and only the usual ham
bands 3.4-3.6-3.8-4, 7.0-7.2-7.4, 14.0-14.2-14.4, 14.8-15.0,
21.0-21.2-21.4-21.6 and 3, 200KHz chunks of the 10M band.

The KWM2A had the above bands, plus an equal number in the same ranges
that could be any frequencies you want. The KWM2A also had plug in
relays, to ease replacement, but the replacements are becoming rather
rare due to the high impedance HV windings.

In later times there was a retrofit kit for the KWM2 that added the
plugin relays, and the extra band segments. There were also a variety
of noise blanker, Q-multiplier, external VFO, and other modification
kits once available. It is an extremely well documented radio.

It is a very nice radio. I like mine.

-Chuck, WA3UQV

wrote:
What are the differences between the KWM-2 and the -2A?

Was there a -2B?

Thanks...

Rick WA1RKT