RM Italy BLA350 Plus 300W Linear Amplifier faulty, Part 1

[@GroundControl204]

Great review, waving from my tech bench. 73

[@TingILi]

Outstanding video. Great information delivery.

[@boxingday11]

Thanks Wayne, really interesting👍🇬🇧

[@RussellMorton-cn2xh]

Hi Wayne Interesting is there and Part 2 .. follow up at all ...? Secondary ...Is there any sources for a service manual on adjustments for servicing trimmers and voltages that you were able to track down ?

[@waynephillips1848]

Hi sorry no part 2, like you looking for full service information. Hi try this link, its in Russian, if you have chrome you have to right hand click, "Translate to English", there is 42 pages but some very interesting discussion's www.cqham.ru/forum/showthread.php?21492-%F3%F1%E8%EB%E8%F2%E5%EB%FC-RM-BLA-350

[@christianfrankl100]

Hi Wayne! Thanks for this video. Currently I am trying to repair an older BLA350, which has the 2SD2941 FET´s inside. Both are broken... Unfortunately those are not available anymore. So I would like to take MFR150´s instead. RMItaly told me, that there is a modification at the PCB, which has to be done. But they are not telling, which difference.... Do you have an idea, what has to be changed to get the MRF150 running in the BLA350(without "plus")?? The Spectrum Analyzer work to check the output has still to be done here on my PA, too. Would be happy for any ideas! Tnx and vy 73s, Chris, DL6RDM

[@waynephillips1848]

Hi try this link, its in Russian, if you have chrome you have to right hand click, "Translate to English", there is 42 pages but some very interesting discussion's www.cqham.ru/forum/showthread.php?21492-%F3%F1%E8%EB%E8%F2%E5%EB%FC-RM-BLA-350

[@Bundproppen]

Where is part 2?

[@bryanporter3025]

Any news yet?

[@cnl1882]

Maybe somebody know how to reduce sensitivity for harmonic swr sensor. Im getting Harmonical Swr error all time in ssb, but in cw or digi works fine...

[@xavieraus7285]

Hi Wayne, My problem for the BLa-350 i have 0W to display, the ALC connected to my radio, then i would think that the problem is because i have too much ALC voltage the TREM6 . Just measure the voltage on the ALC connector of the amplifier. The max voltage -2.2 Volts not correctly. If there is not -10V this is obviously the problem and probably the trimmer or ampli OP TL084CN. The protection excessive input Power "over imput" is not functional , PIN 9 Trim5 Do you have idea ? Many thank F4EFA

[@Johnyrocket70]

EBay says it all

[@МартинМартынов-ф3д]

Hello, can this amp be modified for the 11 meter band ?thank you 73s