All, I have reached the conclusion that the K3 may be the best data radio I've ever owned or operated. Got plenty of compliments on the audio quality (no IMD or wide-bandwidth products). The folks I worked - most of them had heard of or seen the K3 [hamfests], and two of the guys wanted their own after hearing this one.
My set up here is pretty plain so far, but I had a whale of a good time operating low power PSK on 20m today. Did some experimentation before going live, and set up things as follows. The MON and TEST functions really help with getting levels right. Data MD: Data A TX line in setting: 20% of full scale. The output is a laptop's speaker jack and the setting reflects the playback volume set on the laptop. RX line out setting: 55% of full scale. The input is the mic jack of the laptop. RX Filter: shift it to 1 KHz Fc, and 200 to 400 Hz bandwidth. K3 Line In Gain: set at 5 to 10. This range seems fine, but it won't help to go any higher than 8 or so. K3 Line Out Gain: leave this at the default 30 setting. It works fine. K3 Mic Source: Select Line In. Don't forget to put it back when you return to voice modes. PTT-Key: I ran it DTR-Off, but you could also use RTS for keying. Set up at the home QTH is as follows- K3/10 MFJ-941 tuner Long wire antenna - 130' long at 35' above ground. Two stereo cables - 3.5mm to 3.5mm, both male USB: Keyspan USA-19HS serial port adapter @ 38400 bps. SW: Digipan 2.0 running on XP Pro, SP2. I had a power setting of between 3 and 5 Watts. With PSK31, that's enough. 73, matt - WA6EGJ K3 s/n 24 _______________________________________________ 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
