[Elecraft] K1-4 KAT1: No voltage during SWR bridge adjustment of C9

2008-02-27 Thread KB3OKS - Mark
Hello everyone, I'm currently assembling a KAT1 for use with my already-completed K1-4 (which I'd previously been using with an external tuner), and I'm having some trouble with the final step of the SWR bridge adjustment of trimmer capacitor C9. I did verify the previous steps of setting power

[Elecraft] K1-4 KAT1: No voltage during SWR bridge adjustment of C9

2008-02-27 Thread Mark Lampert (KB3OKS)
Hello everyone, I'm currently assembling a KAT1 for use with my already-completed K1-4 (which I'd previously been using with an external tuner), and I'm having some trouble with the final step of the SWR bridge adjustment of trimmer capacitor C9. I did verify the previous steps of setting power

Re: [Elecraft] K1-4 KAT1: No voltage during SWR bridge adjustment of C9

2008-02-27 Thread Don Wilhelm
Mark, You did try the measurement during transmit did you not? It will be zero volts when there is no power going through the wattmeter section of the tuner. Check the orientation of the diodes, and check T1 for correct connections and good tinning of the leads - if you cannot see a bit of

Re: [Elecraft] K1-4 KAT1: No voltage during SWR bridge adjustment of C9

2008-02-27 Thread KB3OKS - Mark
Don, The rig was in 'TUN' mode as according to the instructions, but I wasn't actually keying down. Perhaps I missed that? I checked out T1 but I'll triple check it this evening, and I'll also test the diodes with my DMM since I'm certain of their orientation on the board. Don Wilhelm wrote:

Re: [Elecraft] K1-4 KAT1: No voltage during SWR bridge adjustment of C9

2008-02-27 Thread KB3OKS - Mark
Looks like the problem was the simplest -- I just wasn't in transmit. Sheesh. But better late than never, I suppose. Thanks again for your time, Don ... 73, Mark / KB3OKS KB3OKS - Mark wrote: I checked out T1 but I'll triple check it this evening, and I'll also test the diodes with my