Re: [Elecraft] K3 - SWR Fold-back
In a message dated 12/11/2007 11:40:11 A.M. Pacific Standard Time, [EMAIL PROTECTED] writes: You don't suppose trying to use an 80-meter dipole on 160 had anything to do with it, do you? K9ZTV [EMAIL PROTECTED] wrote: I don't know if this will help, but I've had two experiences with my K3 regarding power reduction. While attempting to participate in the 160M contest, I connected to my 80M dipole and hit tune in the ATU active mode. I immediately got a high SWR and retune cycle which reduced the SWR at the rig to ~ 10:1. Checking the power output, which had been set at 106W, it was indicating 79W. During a second subsequent tune (same ant and same settings ) the rig initiated a tune cycle and immediately shut down. No overpower/high current indication. I turned the rig on again, and everything was the same as before. I suspect maybe the tune was marginal and that at that SWR the rig is between a 'continue or shutdown' logic process. No residual effects were noted. Al WA6VNN K3 #31 Of course it had everything to do with it - but an experiment is an experiment - I like to see what a well designed radio can really do. Besides I made a few dozen contacts on the 160M contest and they were the first contacts I've made on 160 in 46 years of hamming. I rather enjoyed it! I hope the info was helpful in answering the question about SWR and rollback. Yes it does roll back, and very gracefully I'd say. Al WA6VNN **See AOL's top rated recipes (http://food.aol.com/top-rated-recipes?NCID=aoltop000304) ___ 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] K3 - SWR Fold-back
I don't know if this will help, but I've had two experiences with my K3 regarding power reduction. While attempting to participate in the 160M contest, I connected to my 80M dipole and hit tune in the ATU active mode. I immediately got a high SWR and retune cycle which reduced the SWR at the rig to ~ 10:1. Checking the power output, which had been set at 106W, it was indicating 79W. During a second subsequent tune (same ant and same settings ) the rig initiated a tune cycle and immediately shut down. No overpower/high current indication. I turned the rig on again, and everything was the same as before. I suspect maybe the tune was marginal and that at that SWR the rig is between a 'continue or shutdown' logic process. No residual effects were noted. Al WA6VNN K3 #31 **See AOL's top rated recipes (http://food.aol.com/top-rated-recipes?NCID=aoltop000304) ___ 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] K3 - SWR Fold-back
At what SWR value does the K3 reduce output power. Or to ask another way, at what SWR level will the radio coutinue to produce full output (without damage). Thanks, Joe N9VX ___ No banners. No pop-ups. No kidding. Make My Way your home on the Web - http://www.myway.com ___ 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
