Post by Deleted on Oct 25, 2017 2:20:37 GMT -5
I am trying every thing to fix this analyzer I have contacted the people at MFJ.
I know 2 diodes D1 and D3 and R1 where cooked I replaced R1 I got the SWR reading back the diodes on the RF board are SOT-23 device with the markings "AH"
I found some info on a MFJ-269 Repair to give me a guess at what there diodes where so I ordered 6 and was going to swop out D1, D2, D3, D4
at first I just did the 2 that where shot... did not do much I did D4 and lost the SWR readings put the old one back and got the SWR meter back... so there leaves me to guess the diodes are not right at all...
So if any one has an MFJ-266 antenna analyzer can you look inside on the RF board next to the N-connector and tell me what value of Resister "R1" is or the print in it i think it is a 50 Ohm and if they can identify what D1, D2, D3, D4 are ..?
Please help.
Thanks!
I didn't find the right solution from the Internet.
References www.eevblog.com/forum/beginners/amateur-radio-operators-mfj-266-antenna-analyzer/
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I know 2 diodes D1 and D3 and R1 where cooked I replaced R1 I got the SWR reading back the diodes on the RF board are SOT-23 device with the markings "AH"
I found some info on a MFJ-269 Repair to give me a guess at what there diodes where so I ordered 6 and was going to swop out D1, D2, D3, D4
at first I just did the 2 that where shot... did not do much I did D4 and lost the SWR readings put the old one back and got the SWR meter back... so there leaves me to guess the diodes are not right at all...
So if any one has an MFJ-266 antenna analyzer can you look inside on the RF board next to the N-connector and tell me what value of Resister "R1" is or the print in it i think it is a 50 Ohm and if they can identify what D1, D2, D3, D4 are ..?
Please help.
Thanks!
I didn't find the right solution from the Internet.
References www.eevblog.com/forum/beginners/amateur-radio-operators-mfj-266-antenna-analyzer/
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