Re: [Elecraft] K2 circuit breaker

2007-06-08 Thread Don Wilhelm
Charles, It would contain the upgrade (and should have blue toroids for L16 and RFC1, L15 not populated). BUT - do check the value of C31. If C31 is .22uf you have *all* the latest pieces, but if C31 is a 33nf cap, then you have one of those troublesome 'intermediate' KPA100 kits that were sh

Re: [Elecraft] K2 circuit breaker

2007-06-08 Thread charles
On Friday 08 June 2007 09:46, charles wrote: > On Friday 08 June 2007 01:18, Don Wilhelm wrote: > > If you are seeing erratic HI SWR on your antenna, consider that the > > KPA100 could be oscillating (especially if it happens on 40 meters) - if > > that is suspected, I recommend that you add the KP

Re: [Elecraft] K2 circuit breaker

2007-06-08 Thread charles
On Friday 08 June 2007 01:18, Don Wilhelm wrote: > If you are seeing erratic HI SWR on your antenna, consider that the > KPA100 could be oscillating (especially if it happens on 40 meters) - if > that is suspected, I recommend that you add the KPA100UPKT.  If your > KPA100 kit was shipped after las

Re: [Elecraft] K2 circuit breaker

2007-06-07 Thread David Cutter
Normal fuses are rated such that when 2.1 times their nominal current rating is passed they will break within 30s. So, a normal 20A fuse will not break until it is passing >40A and even then it will take a long time to go, enough to fry the rig. The fuse is there to protect the cable when a gr

Re: [Elecraft] K2 circuit breaker

2007-06-07 Thread Don Wilhelm
Scott, That sounds like you have a K2/100 there (using a 30 amp? power supply). There is no circuit breaker in the KPA100, but if you are using the supplied power cord, the manual instructs you to add a 20 amp fuse in the power supply lead. The base K2 does have a resettable fuse that acts ra

[Elecraft] K2 circuit breaker

2007-06-07 Thread Scott McDowell
Is there any way to test the circuit breaker in a K2 without running the risk of damaging the rig? I have had the circuit breaker in my Icom PS-30 switching power supply trip a couple of times lately because of high swr on the antenna I was trying to use. The power supply always beats the K2 c