In preparation for Field Day, I had occasion to set up my HP8590D last night and do comparative measurements of what my K2/100 and TS850 looked like 300 kHz away. I was surprised by the result.
With both radios, I transmitted CW on 3515 kHz and looked to see what the SSB team would be contending with between 3750 and 4000 kHz. The TS850 was cleaner, by roughly 15 dB, than the K2/100. Transmitting on 7025 and looking at 7150-7300, the TS850 was roughly 6 dB cleaner. Comparable tests on 14 MHz showed them pretty much even money. The K2 is s/n 3003. Several other hams built the various pieces of the K2/100, which I bought used, and their work looks quite clean. I've owned it for about a year and a half and been quite pleased with it. Both radios were matched to an indicated 1:1 VSWR using their own antenna tuners (the KAT100 with the K2), and working into the same antenna through a switch. This radio DOES have the key click mod. The K2/100 is >40" from the nearest power supply. So the question is, what can I be doing to get my K2/100 cleaner "in band?" Are there specific mods that are likely to accomplish this? And I recently bought an old-timer, s/n 301, identically equipped (K2/100, KAT100, K160RX, KNB2, KDSP). I'm currently troubleshooting an AGC problem in that radio, so it's apart on my bench and hasn't been tested in this way. Any suggestions for getting it as clean as possible? Jim Brown K9YC _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
