Gonset Gsb 101 Manual Lawn
Gonset GSB-101 manual, reprint. This is a digitally copied and enhanced manual for the Gonset GSB-101 linear amplifier. It is clear, clean, and easy.
Gonset GSB-101 manual, reprint. This is a digitally copied and enhanced manual for the Gonset GSB-101 linear amplifier. It is clear, clean, and easy to read. It is printed on premium 24# paper with heavy covers and bound with a plastic comb.
Manuals & Schematics. This page contains files & images of user manuals, service manuals, schematics, and other info for various rigs that I own (or have owned). Gonset GSB-100 Transmitter NEW Original Manual. Gonset GSB-101 3062 SSB HF Amp. Add (PUB) GON-GSB201: Gonset GSB.
No more struggling with unreadable photocopies! The GSB-101 manual is about 8 1/2' X 11' with a large one piece 11' X 17' fold out schematic. Topics include specifications, antennas, installation, operation, interconnection diagrams, circuit description, neutralizing, and maintenance.
I just picked these up at a local Hamfest. They're in very rough shape - obiously some (crude) mods done and they look like they've spent a dozen years in a chicken coop.
The 100 has an extra transformer and diodes replacing the rectifier tubes. The 101 has an extra meter installed on the front panel next to the original one (the actual meter movement is gone, just the case is there). The 101 also has a blown fuse, and a resistor looks burnt and cracked near the AC line, and it's missing one of the 811a's.
That's what I've seen so far after about an hour poking around. I only paid $100 for the pair, so I'm not into it for a lot of money.
Any advice on checking this out further, things to look for, common failure points, most logical procedure for checking the circuits/components before even attempting to slowly supply power to these beasts? Any help is appreciated. Wayne VE3JJJ Logged. I used to have a GSB100. Many, including mine, had the power transformer go out. Since you mentioned an extra transformer, yours might also be a replacement. The original had several windings, including bias.
So the extra transformer might be filament or bias. On mine, when I replaced the transformer, I also put in diodes (in a bridge circuit) because the replacement transformer windings were different than the original. Your situation might be similar. Shouldn't be a problem, however. I would recommend bringing up power slowly using a variac to start the AC at a lower level. Maybe also temporarily replace the fuse with a lower value one, but if so just use while powering up.
When ready to load final, you would then replace with proper fuse, probably about 5 amps. The balanced modulator used four clip-in 1N34 diodes, which had a tendency to drift causing carrier balance to shift (adjustable through two holes in front panel). Carburetor Jetting Software Companies more. The GSB101 uses a very basic circuit with four 811's. You should be able to power up (again variac would be good).
Don't bother replacing the 4th 811 until operational. It will work ok with 3. The GSB100 has terminals on back to control the 101 and an EXTERNAL antenna relay, if I remember correctly. On line manuals at Good luck.
This pair is now officially *fifty* (50) years old and unless it's in 'collector' condition, they are worth virtually nothing. I've owned them both, and have modified and repaired these boat anchors many times. They were both built locally to me, in Burbank, California; possibly because of this, these rigs are very plentiful around here, and I've seen them at neighborhood garage sales for $10 (for the pair), being sold be people who had no idea what they are! Anyway, these rigs, if spruced and polished up and made operational, are great fun to own and use and a great cardio workout for your body if you carry them around much. Be careful if you haven't worked around high voltage circuits before, as both the exciter and the amp are loaded with high voltage circuits and even the amplifier keying line that runs between the 100 and the 101 (terminal strip interconnections between the rear panels) carry 120Vac, exposed.
This gear would *NOT* make it through UL/CSA Product Safety inspection today.lethal voltages appear where you can touch them, even with the covers on. If you have the manuals with schematics, that helps a lot. If not, they are available for free download from the Boat Anchor Manual Archives (bama), or in print, a bit easier to read, from manualman.com and elsewhere. I'd definitely get the manuals and schematics, with parts lists, as a starting point. 73 & good luck! Steve WB2WIK/6 Logged.