| Author |
Message |
    
Spider24112
New member
Username: Spider24112
Post Number: 3
Registered: 5-2004
| | Posted on Saturday, May 22, 2004 - 6:46 am: | 
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I would like to know if someone can suggest if at all possible how to convert a solid state amplifier designed for 26-30Mhz to 50-54mhz? I hope that is can be done. I'm looking for some where in the ball park of 200 watts and it to be able to operate all modes Cw ,SSb, FM . I know about Mirage amplifiers and have heard about night mare stories about them. Hope to hear some good new soon Thanks |
Tech237
Moderator
Username: Tech237
Post Number: 26
Registered: 4-2004
| | Posted on Saturday, May 22, 2004 - 8:54 am: |
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It could be done BUT economically is it worth it. Drivers, pre-drivers, tuned circuits would have to be changed. Probably cheaper to go and buy a 6m amp. |
Karatebutcher
Senior Member
Username: Karatebutcher
Post Number: 1459
Registered: 7-2002
| | Posted on Saturday, May 22, 2004 - 9:01 am: |
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I have to rush, I will let Lon handle this one. |
Tech833
Moderator
Username: Tech833
Post Number: 705
Registered: 8-2002
| | Posted on Saturday, May 22, 2004 - 5:14 pm: |
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Many HF transistors will not work bayond 30 MHz. If you were to retune your input/output networks AND replace the semiconductors, AND reisolate the power supply, then you could make it work.
I suggest against it unless you simply would enjoy the challenge and want a project to keep you busy. |
Tech8541
Moderator
Username: Tech8541
Post Number: 197
Registered: 12-2003
| | Posted on Sunday, May 23, 2004 - 1:10 am: |
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to add to this sometimes the ferrite material used for the transformers performs very poorly past 35-40mhz. |
Radiopat
Junior Member
Username: Radiopat
Post Number: 11
Registered: 9-2003
| | Posted on Monday, May 24, 2004 - 5:38 am: |
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Look for a Motorola semiconductor book. There is lots of info regarding vhf and uhf semiconductors with all the data you need. Sometimes Motorola will send you free semiconductor samples.
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