If you use a dummy load, you may wish to be certain it's okay for VHF. Some dummy loads which are primarily designed for HF frequencies become rather reactive on VHF. I think the length of the internal leads in the device had some inductance and/or capacitance to the mix and, therefore, below presented to the radio is no longer a pure resistance.
Bruce-W8FU From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of James Sarte Sent: Wednesday, February 11, 2009 5:53 PM To: 'Stephen Prior' Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] Calibration of KXV3 module Hi Stephen, Yes, I'm familiar with 50 ohm BNC network terminators. This will work without issue and get me properly calibrated? Otherwise, I can always get an SO239 to BNC adapter and run a cable into my 300w 50 ohm dummy load. 73, James KC2UEE _____ From: Stephen Prior [mailto:s...@sjprior.fsnet.co.uk] Sent: Wednesday, February 11, 2009 5:05 PM To: James Sarte Subject: Re: [Elecraft] Calibration of KXV3 module James, It will only (possibly) be 50 ohms at the frequency for which the stubby antenna is designed, which will almost certainly not be the frequency coming out of the XVTR jack, so it won't work. I expect a 47 ohm resistor would be close enough, but ideal for this purpose would be a 50 ohm BNC termination that used to be used in pc networking if you are familiar with that. Otherwise a coax cable (via adaptors if necessary) from a good dummy load to the transverter terminal would be fine. Hope that helps Stephen G4SJP On 11/02/2009 21:26, "James Sarte" <kc2...@gmail.com> wrote: Dear group, Page 50 of the user manual states that a 50 ohm resistor should be attached to the XVTR OUT jack for calibration. If I don't have a resistor, can I use a 50 ohm BNC stubby HT antenna instead since output is only 1 mW? 73, James KC2UEE _____ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
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