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Messenger M4000. I used to run one.....

Wow i had heard 1000 uf per amp before. What percent voltage ripple does this yield? Is this what normal over the counter fatboy, worldwide unregulated power supply use also or is this a much better method? I could basically use a 1 farad cap then. Too bad audio caps are normally only 20V!

What is the proper amount size capacitor to use per amp? Or what voltage ripple is acceptable?

A friend of mine actually has 2 of them but is not aware of their output. I noticed that the part numbers match what he says he has but is unable to check them. I will have to pay for him to ship them down south to me. I believe they will be 14 volts ac out with 120 in correct? What is the...

I had actually found Ica but they are almost always out of the 70 amp versions. I see most transformers are 430-7101 or 7102's. Are these the correct transformers here?

I am having hard time finding a power transformer to my homebrew power supply. I want my power supply to idle about around 18-20 volts but no higher than 20. I tried a regular 12v transformer but it idles at around 15.8 and drops to 11.5-12 volts while keyed. The transformer was 1 kva with...

Right now I run a single battery and a 200 amp fast charger I kick on when I'm on the key alot but the voltage drop is still there. I think the 75 amp Iota on ebay would work. Besides the factory warranty is easy to get around.....

I am either going to build a 75 - 100 amp for my class C super mega splatter box or purchase a Iota 75amp. I have heard alot of great things about the Iota power supplies. They are going for 155 on ebay right now which is a smoking price.

Does anyone have any plans, schematics or even photos of the inside of an unregulated power supply. I understand they are pretty simple to build and I would like to build a 75-100amp model. Thanks in advance

I am not sure what the rating is honestly. The power supply is a PR 60 - 60 amp peak 48 continues amps. THere is 2 rectifiers.

Anybody know if I can swap out a Tripp-Lite recitifer (70ct01p) to something else? It will not hurt the power supply will it? I believe the bridge rectifiers to be bad but tripp lite sells them for 20 each when you can find others of equal current rating or more for less than 10. Whats up...

Im curious as to how impressive the signal increase will be when changing combo's as follows dead key 90 swing to 250 upgrade deadkey 250 swing to 700 Hoping to make a noticable increase on the AM band.

Hey guys I havent been on the site for awhile but managed to figure out the resistor values much harder ways! I do really appreciate the help though and now that you have confirmed they are 10ohms I feel even better! I am currently waiting on some tubes to get here sometime next week I...

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EMAIL SENT!

I would really appreciate if if you could find a schematic! I have been talking to alan at tubesplus and he doesnt have the full schematic for this unit but has been extremely helpful. I am going to try to lift the one remaining resistor and ohm it to find the value. I cant tell looking at it...

I was actually always told this amplifier was called a Barefoot 300. What is actually pretty awesome is I found another person on CBradiotalk.com that has the same amplifier - saw it in a picture. He sent me some pics of the inside he had on his computer and it is identical. He also said it was...

I appreciate all the help so far guys! I will call tubeplus also to see if I can get some more help there. You are correct about removing the entire chassis though which I already did. I just need to swap out these 4 resistors and put the new tubes in it. Be nice to have my little base amp up...

I have never heard of a crusader but I know what you mean about the no transformer haha. I am actually very partial to this amp though and would love to get it going again quickly. There is literally nothing to them if I had the schematics there would be no problem.

This has actually been a great amplifier until lately. It contains 3 30kd6's and is transformerless. The tubes were getting pretty flat then suddenly it popped. I have a total of 4 resistors out. They are the same in pairs and I have identified one pair but no luck with the others. I removed one...