| Author |
Message |
    
Carolinagold
Member
Username: Carolinagold
Post Number: 63
Registered: 12-2002
| | Posted on Sunday, March 18, 2007 - 3:25 pm: | 
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I just got a apollo 500x-2 amp 1 driving 3 and i was wanting to know how to tune up a tube amp..
first tube amp i ever had (allways ran pills) so dont know how to tune one |
Crackshot
Intermediate Member
Username: Crackshot
Post Number: 276
Registered: 10-2005
| | Posted on Monday, March 19, 2007 - 12:23 pm: |
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Which bands does the amp cover? Does it have load,tune,drive knobs?
CEF 655
HAM 225
ARRL Member
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Carolinagold
Member
Username: Carolinagold
Post Number: 64
Registered: 12-2002
| | Posted on Tuesday, March 20, 2007 - 9:35 pm: |
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Just covers 11 meter only and it has a drive knob and ant tune knob . Im putting 1/2 wat key into it and swinging about 40 watts |
Carolinagold
Member
Username: Carolinagold
Post Number: 65
Registered: 12-2002
| | Posted on Thursday, March 22, 2007 - 7:45 pm: |
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What is the best way to tune up one of these amps.
Im putting 1/2 watt deadkey into it and swing'n about 30 watts. It's a four tube amp 1 driving 3.
with drive knob and ant tune knob. And covers 11 meters only |
2600
Advanced Member
Username: 2600
Post Number: 585
Registered: 7-2002
| | Posted on Friday, March 23, 2007 - 10:47 pm: |
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Any small base amp with a single driver tube will be overwhelmed with 30 Watts peak drive.
A 'big' base radio in the day that box was built would bust a gut to swing half that much.
Sounds like you need a larger amplifier or a smaller radio.
That single driver tube probably won't take that kind of drive for long before it fails.
73 |
Carolinagold
Member
Username: Carolinagold
Post Number: 67
Registered: 12-2002
| | Posted on Saturday, March 24, 2007 - 11:29 am: |
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if it blows it blows but thats not the question... what is the best way to tune it up on any radio |
Sonny
Intermediate Member
Username: Sonny
Post Number: 154
Registered: 5-2004
| | Posted on Saturday, March 24, 2007 - 8:47 pm: |
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carolinagold, I would have the tendency to tune it like it as if it had a load & plate knobs. put both at 12:00 then a quick DK adjust the drive for peak reading then do the same for the ant. tune knob |
Carolinagold
Member
Username: Carolinagold
Post Number: 69
Registered: 12-2002
| | Posted on Saturday, March 24, 2007 - 11:07 pm: |
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ok thanx |
2600
Advanced Member
Username: 2600
Post Number: 586
Registered: 7-2002
| | Posted on Sunday, March 25, 2007 - 3:05 am: |
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Tune for max modulated peak power. No matter how many knobs it has.
73 |
Carolinagold
Member
Username: Carolinagold
Post Number: 71
Registered: 12-2002
| | Posted on Monday, March 26, 2007 - 6:41 pm: |
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well since my apollo has 6lq6 tv sweep tubes.
i wonder if i can get lucky and maybe find a set of tubes at a tv repair shop. |
