AF1 - couple of questions
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I picked up the lexan cases for the AF1 and W1 from W8FGU. Very nice,
well made products by the way. Questions; 1. - I am currently running the AF1 with a 9v battery, but I will be connecting it to 12v supply here in the shack. I was going to leave the 9v battery installed, as it appears the diodes that are part of the circuit will protect it. But wanted to confirm. The case is clear, so I can also keep an eye on the battery, but I wanted the battery in, in case I wanted to operate away from the shack. 2. - I performed the circuit changes documented in the errata, and the AF1 works fine with headphones (stereo jacks), but it does not seem to work with any of my external speakers. Did I loose that option when I made the changes in the errata? They seemed to be required for it to work with headphones. Dave Wilburn K4DGW K2/100 - S/N 5982 _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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Dave,
I have had no problems using 12V while leaving the 9V battery installed. Although I don't use mine to drive an external speaker directly, I just tried it using the 9V battery, and an old computer speaker, and it worked fine. The errata changes were made so that the left and right channels would be commoned. I have had some 1/8" plugs and jacks that have had some inherent problems. You might want to check for continuity and/or shorts. Neal WA6OCP
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Thanks. I have two ext. speakers that work fine. They are mono
jacks. Headphones (stereo jacks) work fine, but the ext. speakers do not, even though they do when connected to a radio. Dave Wilburn K4DGW K2/100 - S/N 5982 WA6OCP wrote: > Dave, > > I have had no problems using 12V while leaving the 9V battery installed. > > Although I don't use mine to drive an external speaker directly, I just > tried it using the 9V battery, and an old computer speaker, and it worked > fine. The errata changes were made so that the left and right channels > would be commoned. I have had some 1/8" plugs and jacks that have had some > inherent problems. You might want to check for continuity and/or shorts. > > Neal WA6OCP > > > David Wilburn wrote: >> >> ...... Questions; >> >> 1. - I am currently running the AF1 with a 9v battery, but I will be >> connecting it to 12v supply here in the shack. I was going to leave >> the 9v battery installed, as it appears the diodes that are part of >> the circuit will protect it. But wanted to confirm. >> >> 2 - I performed the circuit changes documented in the errata, and the >> AF1 works fine with headphones (stereo jacks), but it does not seem to >> work with any of my external speakers. Did I loose that option when I >> made the changes in the errata? They seemed to be required for it to >> work with headphones. >> >> Dave Wilburn >> K4DGW >> K2/100 - S/N 5982 >> _______________________________________________ >> Elecraft mailing list >> Post to: [hidden email] >> 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 mailing list Post to: [hidden email] 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 |
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