Re: [Elecraft] MFJ-259B alignment information?
Anyone have any success accessing Tom's web site: http://www.w8ji.com/mfj-259b_calibration.htm Every time I attempt it, I either time out or get the old This Page Cannot Be Displayed... yadda... yadda... yadda?. 73, Tom N0SS At 10:01 PM 7/15/04, you wrote: W8JI designed the unit and has written a very detailed alignment procedure that is on his website. A search on W8JI and MFJ259B will turn up a link. As coincidence would have it, I found a 259B at a hamfest over the weekend and plan to use his instructions myself. They look good, but I haven't done it yet. Gotta scare up some resistors to use as calibration references. Just ordered some from DX Engineering. Jim K9YC On Thu, 15 Jul 2004 21:34:43 -0400, Don Wilhelm wrote: Does anyone know where I can find detailed alignment instructions for a MFJ-259B? ___ 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 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/elecraftHelp: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] MFJ-259B alignment information?
Does anyone know where I can find detailed alignment instructions for a MFJ-259B? I bought some Vishay precision non-inductive power resistors - 25 ohm, 50 ohm and 100 ohms 100 watt rating to use as dummy loads. I assembled them to a proper heat sink and connected to an SO-239 with zero length leads - and when I tried my MFJ-259 with these resistors, it told me that these resistors were OK only up to 10 MHz or so!!! At 30 MHz, the 50 ohm resistor read 62 ohms with a reactance of 10!!! Given the specs on these resistors (flat to at least 170 MHz), I now tend to disbelieve my MFJ-259 and would like to calibrate it. I have the instruction manual that came with it and it is not adequate for a calibration task. 73, Don W3FPR ___ 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/elecraftHelp: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] MFJ-259B alignment information?
Don Wilhelm wrote: I now tend to disbelieve my MFJ-259 and would like to calibrate it. I have the instruction manual that came with it and it is not adequate for a calibration task. Try the MFJ with an ethernet terminator. I bet it will look much better. I suspect the resistors are not as good as they are supposed to be. -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco ___ 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/elecraftHelp: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] MFJ-259B alignment information?
W8JI designed the unit and has written a very detailed alignment procedure that is on his website. A search on W8JI and MFJ259B will turn up a link. As coincidence would have it, I found a 259B at a hamfest over the weekend and plan to use his instructions myself. They look good, but I haven't done it yet. Gotta scare up some resistors to use as calibration references. Just ordered some from DX Engineering. Jim K9YC On Thu, 15 Jul 2004 21:34:43 -0400, Don Wilhelm wrote: Does anyone know where I can find detailed alignment instructions for a MFJ-259B? ___ 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/elecraftHelp: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] MFJ-259B alignment information?
www.w8ji.com/mfj-259b_calibration.htm W8JI designed the unit and has written a very detailed alignment procedure that is on his website. A search on W8JI and MFJ259B will turn up a link. As coincidence would have it, I found a 259B at a hamfest over the weekend and plan to use his instructions myself. They look good, but I haven't done it yet. Gotta scare up some resistors to use as calibration references. Just ordered some from DX Engineering. Jim K9YC On Thu, 15 Jul 2004 21:34:43 -0400, Don Wilhelm wrote: Does anyone know where I can find detailed alignment instructions for a MFJ-259B? ___ 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/elecraftHelp: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.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/elecraftHelp: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
