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magnum 6500R
- Thread starter pipe layer
- Start date
If it is built like the old Magnum 6000 it will have 4 2sc2879 Transistors inside.
They also ( back then ) had electronic regulated bias that was adjustable, adjustable SSB delay ( inside on the board) and the 6000 also had a small jumper you could move for high drive or low drive.....It was always recommended that you chose the hi drive position.
Should have a wrap around heat sink, usually gray/silver anodized Aluminum with a gray or blue face.
Some models had a Low/High/Med switch on the front, or a 4 power rotary switch, low/med/high/max and a 5 pole filter built into the output.
I used to run a 6000 on ten meters, great amp except like all of these the heat sink is a bit too small, you need to put a fan or two on the top to keep them cool, especially if you are going to run AM/FM mode.
DO NOT OVERDRIVE THEM!
Regardless if they are called High drive or not 4 or 5 watts in AM/FM mode and about 20 watts max pep in SSB is good
They will produce a nice clean signal at about 300 to 350 watts on ten meters if you drive them with a clean radio.
If they are indeed the same amp as back them, they are not bad for what they are.
73
Jeff
They also ( back then ) had electronic regulated bias that was adjustable, adjustable SSB delay ( inside on the board) and the 6000 also had a small jumper you could move for high drive or low drive.....It was always recommended that you chose the hi drive position.
Should have a wrap around heat sink, usually gray/silver anodized Aluminum with a gray or blue face.
Some models had a Low/High/Med switch on the front, or a 4 power rotary switch, low/med/high/max and a 5 pole filter built into the output.
I used to run a 6000 on ten meters, great amp except like all of these the heat sink is a bit too small, you need to put a fan or two on the top to keep them cool, especially if you are going to run AM/FM mode.
DO NOT OVERDRIVE THEM!
Regardless if they are called High drive or not 4 or 5 watts in AM/FM mode and about 20 watts max pep in SSB is good
They will produce a nice clean signal at about 300 to 350 watts on ten meters if you drive them with a clean radio.
If they are indeed the same amp as back them, they are not bad for what they are.
73
Jeff
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It looks like a good build, it is different than the ones with the gray face.
It used a strip-line board and had a different layout.
Do not let anyone twiddle with any of the vr`s in that amp.
Put a couple low profile fans on top of it and treat it nice.
If it is 100% and that clean you got a good little amp.
73
Jeff
It used a strip-line board and had a different layout.
Do not let anyone twiddle with any of the vr`s in that amp.
Put a couple low profile fans on top of it and treat it nice.
If it is 100% and that clean you got a good little amp.
73
Jeff
Very nice! Ive been trying to find one of these for ages Wish i could have found one for $200 as well lol!
Wish i could have found one for $200 as well lol!well got the amp today and looks great and seems to be new as stated by seller, so not a bad deal for $200 to my door. Cant see the transistors but I would imagine they are 2879's.
The transistors in that amp are indeed 2SC2879's, as Audioshockwav mentioned. I'd LOVE to have an amp like that!
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