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Message |
    
Dxmodulator
Junior Member
Username: Dxmodulator
Post Number: 30
Registered: 11-2004
| | Posted on Saturday, June 03, 2006 - 12:40 pm: | 
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I have a tube amp that says 321 on the front and I need a choke for it. I think this amp is the same as the palomar skipper 300 any way...........The choke that sits in the middle of the 3 drive tubes is all burnt up. I think it is due to the fact that it sits in the middle of 3 hot tubes. The internal fan works. I need to know what the specifications are for this choke and where to get a new one. Oh and what frequency does amp this work on? |
Dxmodulator
Junior Member
Username: Dxmodulator
Post Number: 33
Registered: 11-2004
| | Posted on Tuesday, June 06, 2006 - 1:25 pm: |
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Any one out there know anything about the above amp?????????????? |
Monk
Junior Member
Username: Monk
Post Number: 26
Registered: 2-2002
| | Posted on Friday, June 09, 2006 - 3:36 am: |
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You can unwind the burnt wire and rewind it with wire from radio shack. A coat of clear nail polish
will hold the turns in place.
The reason it burnt up could be from a shorted tube and not just the heat from the tubes.
The 321 are like a Skipper but have better harmonic suppresion because of a pi-l tank circuit instead of a standard pi tank circuit.
The amp will work on 10/11 meters.
If you don't want to rewind the choke you can use any value around 22uH at around 700 mA.
I would install a fuse in line with the choke when testing the first time. If you have a bad tube the fuse will blow instead of cooking your new choke.
Hope this helps
Monk |
Dxmodulator
Junior Member
Username: Dxmodulator
Post Number: 35
Registered: 11-2004
| | Posted on Tuesday, June 13, 2006 - 9:02 am: |
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What diameter wire to use from radio shack? Does it have to be enamal coded. How do I check for shorts in my tubes? I have an ohm meter. Do I check the pins? What amp fuse should I use 2amp, 10 amp, 20amp??? Just A few more questions. Thank you for all your help. |
Dxmodulator
Junior Member
Username: Dxmodulator
Post Number: 47
Registered: 11-2004
| | Posted on Monday, September 11, 2006 - 9:46 am: |
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Update:
It works. I replaced the choke and the caps on both ends and the amp works used it this passed weekend with good reports from drivers and other base stations 45 miles away. |
Dxmodulator
Member
Username: Dxmodulator
Post Number: 59
Registered: 11-2004
| | Posted on Friday, September 29, 2006 - 3:06 pm: |
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another up date.....
Well I burned up the choke again on the PAl 321. This time I saw flashes of lihgt then the somke from the choke then I turned it off. I don't know what happened. It was working just fine for the last 2 weeks. I think one or more of my tubes went bad. |
