For SSB, the KWM-2- series work fine. But, do NOT even think of using one on CW! The KWM-2- series, as well as the Collins 32S-1 and 32S-2 transmitters, use sidetone CW generation which generally produces 3-signals and sometimes even 5-signals!
The 32S-3 and 32S-3A transmitters use true CW generation and there are no problems with multiple signals. As far as reliability, all of the Collins S-Line and KWM-2- series are VERY reliable! I have several pieces of Collins equipment and a number of other "hollow state" equipment. I have had virtually no problems with the Collins equipment. I have had my 32S-3 transmitter for over 40-years (acquired it in 1973) and, last week, was the very first failure that I have had in it. One of the 6146A/8298 final amplifier tubes finally "gave up the ghost". I had to put in a new pair! In general, my Collins equipment has been more reliable than any other of my tube-type equipment. http://k9sth.com/uploads/Equipment_at_K9STH-9_January_2013.pdf Glen, K9STH Website: http://k9sth.com On Saturday, July 5, 2014 2:07 PM, Richard Knoppow <[email protected]> wrote: ----- Original Message ----- From: "Bob Jackson" <[email protected]> To: "porch.boat" <[email protected]>; "puck.boat" <[email protected]>; "qth.boat" <[email protected]> Sent: Saturday, July 05, 2014 11:25 AM Subject: [Boatanchors] Collins kwm-2/-2A > I've never owned/used a Collins rig so before I replace my > now defunct rice box, I need to know how do these rigs > stack up against contemporary DSP rigs? No rants or raves, > pls, just point-for-point comps. I'm a 50/50 CW/SSB kind > of ham. > > Tnx es 73 to all, > > Bob AG5X I think a web search will find a great deal about both the Collins and some contemporary rigs such as Drake. I don't think any of them is ideal for CW although they can be satisfactory. If you want a good tube or hybrid CW rig I suggest you look at the Drake B line separates. The shortcoming is the lack of a really steep filter although the IF filter is satisfactory for most purposes. Modern rigs have a lot of features but actual performance may be no better than equipment from fifty years ago plus the old stuff is supportable. I hear a lot of bad sounding SSB signals on the air due to the settings on the DSP in modern rigs. No one seems able to just leave it alone. -- Richard Knoppow Los Angeles WB6KBL [email protected] ______________________________________________________________ Boatanchors mailing list Home: http://mailman.qth.net/mailman/listinfo/boatanchors Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] Message delivered to [email protected] List Administrator: Duane Fischer, W8DBF ** For Assistance: dfischer at usol.com ** This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html _______________________________________________ Boatanchors mailing list [email protected] https://puck.nether.net/mailman/listinfo/boatanchors
