Tried to toner transfer but that was giving me a hard time so I went and tried another free software. Still need to learn the whole 3d modeling though. Hope the hole gets drilled out correctly.
-
You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
-
A Winner has been selected for the 2025 Radioddity Cyber Monday giveaway! Click Here to see who won!
MRF455 daughterboard
- Thread starter 711
- Start date
If you still haven't got it by the end of the year I'll just cut one 
I have the art and code but the machine is tied up for about the next ....
I have the art and code but the machine is tied up for about the next ....
Wish I lived closer to you I would love to see how that whole process is done.
I sent the order in, board house normally takes 3 weeks round tripIf you still haven't got it by the end of the year I'll just cut one
I have the art and code but the machine is tied up for about the next ....
Keep in mind the picture of the board shown here was designed to replace the MRF477 transistor in HR-2510 style radios. The MRF477 has a pinout of Base, Emitter, Collector rather than the standard Base, Collector, Emitter found with all other finals used in CB's. Using the layout on this board to replace transistors other than the MRF477 will not work.
I just noticed the transistor you show is an HG MRF454. I'm real curious as to how the inside of this transistor looks compared to their 2SC2879... If anyone blows one up, be sure and post the guts please.
I just noticed the transistor you show is an HG MRF454. I'm real curious as to how the inside of this transistor looks compared to their 2SC2879... If anyone blows one up, be sure and post the guts please.
Last edited:
I got a few 2510’s with bad finals and I’m using my Lincoln for reference. A few of the amp builders are repairing HG amps , sounds like something they’d make a video of the insides of one
Received the PCBs from board place , looks like I need to adjust a few things , guess that’s why the first order is never the final order lol. Board is too long to clear the lid but the MRF heatsink fits like a glove . Making the fingers a little wider also.
Been running it through it’s paces. Few things I’ve noticed, compared to an MRF455 the 454 needs more drive. Gonna try a 2290 or 1446.
I have one with a 2sc1446 scabbed to the back of the radio. It is kick but. Works very well. I bought the radio as is and like it.
