Ray used to put his initials on the board when he built them.
5x5
My bet is that the transistors in you amp are MRF 455 transistors under that strap.
Nomad and exit 13 are correct, this looks just like the boards that were being used by Messenger back then.
The color and strip line design are the same.
As Nomad said there were dozens of clones.
They did it to everyone , called them what ever they liked boomer, gray, grey, palamor, palamar, green lizard, red devil, commander, shooting star, palamor elite, some just had a black face with a number on them like 250, 400, 900.
The later ones had vertically mounted input/output transformers.
Almost all said AB1 regardless it they were or not.
The number on the front of the amp is often wishful thinking.
On the original Palamor , some were just model numbers like the 5300 multi band amp and the TX line like the 5500.
Very similar was the Magnum line, I had a Magnum 6000 that had 4x2879's with regulated bias and thermal tracking.
The tx 75 and 100 were close.
Others like TNT ( not x force tnt but the company TNT from back in the 80's) had model numbers that were not to far off what the amp would do.
They built a 200+ that had 4 Motorola 454 transistors in it and if I remember correct the TNT12 pack had MRF 492 transistors.
Pride also had models that approximated the output.
The MRF line of RF transistors have not been made for a long time.
The SRF transistors were matched Motorola transistors with RF Parts house numbers on them
Beta matching was also done in matched pairs, matched quads etc.
Red dot, blue dot, black dot.
Baby that amp, it is a historic item lol.
I have seen them with blue, white, black and gold faces.
Seen them with Motorola MRF 455, 454, SRF 3749, SC1446 and others.
Just treat it as a 100 watt amp.
Nice find.
73
Jeff
