Re: [Elecraft] KIO2 noise and remote PA
Thanks, Lyle, Yes, I have K2 #1013 - lucky 13. I'm sure I bought the KIO2 as soon as it came out. I'll check the crystal fequency tonight. Isn't there also a KIO2 in my remote PA? That one is probably the newer crystal? Sam N4MAP ___ 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
Re: [Elecraft] KIO2 noise and remote PA
On Jun 29, 2005, at 5:13 AM, Sam Smith wrote: Thanks, Lyle, Yes, I have K2 #1013 - lucky 13. I'm sure I bought the KIO2 as soon as it came out. I'll check the crystal fequency tonight. The KIO2 uses a crystal frequency of 16.289 MHz. It has NOT been changed since the unit's inception. The KRC2 uses the same crystal. Isn't there also a KIO2 in my remote PA? That one is probably the newer crystal? The KPA100 has a voltage generator that uses an 18.432 MHz crystal. This one _has_ been changed since the original kit. The original frequency was also 16.289 MHz. It might be interesting to change the KIO2's crystal to 18.432 to see if the spurs you are encountering go away (or get moved to somewhere less interesting). - Jack Brindle, W6FB - ___ 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
Re: [Elecraft] KIO2 noise and remote PA
I found a 16.9xx crystal on an old computer board and swapped it out. Now the birdie has moved somewhere else. My other choice was 16.670 but I figured that would wind up in the 6 meter band... Thanks everyone for the help. Sam N4MAP ___ 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
Re: [Elecraft] KIO2 noise and remote PA
I noticed this at Field Day. The club was using a repeater with output on 146.625. As soon as I turned on the K2 we got hash on that frequency. Any suggestions for tracking this down? You must have an older KIO2 with the 16.289 MHz oscillator. The 9th harmonic is 146.60 MHz. You can change the crystal to 18.432 MHz as used in the later KIO2s, or try clamping a chunk of ferrite around the cable at the K2 connector end. 73, Lyle KK7P ___ 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
Re: [Elecraft] KIO2 noise and remote PA
Sam, Funny you should mention that. In my shack, I have the K2 with a KIO2 and also a 2 meter rig nearby. Whenever the K2 is on, the 2 meter rig stops scanning and hangs on 146.625 and just breaks the squelch. As soon as I shut the K2, scanning resumes. Sam Smith wrote: I noticed this at Field Day. The club was using a repeater with output on 146.625. As soon as I turned on the K2 we got hash on that frequency. Since then I have checked it at home with no computers anywhere around and confirmed the problem. -- 73 Larry WA2DGD ___ 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
[Elecraft] KIO2 Noise
Hello, I just installed the KIO2 option in my K2. All works well except that I now obtain a lot of noise on my PSK31 waterfall display. The noise is effecting the decoding of the PSK31 siganls. If I disconnect the serial cable from my laptop, the noise disappears. In the instruction manual it stated to not connect the sheild on the PC end of the KIO2 cable. I assume that this was to isolate the K2 RF/DC ground from the PC ground? Any suggestions on reducing the noise? Would putting a ferite choke on the cable be worth while? 73s, John - KI7V K2 #3706 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net http://mailman.qth.net/mailman/listinfo/elecraft You must subscribe to post. Subscriber Info (Addr. Change, Unsub etc): http://mailman.qth.net/subscribers.htm Elecraft page: http://www.elecraft.com