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Ten-Tec Centurion Parts Needed


 

I have recently acquired a Ten-Tec Centurion model 422 that is in very nice condition, but has a blown up bandswitch and the plate tuning capacitor was arced.? I might be able to salvage the capacitor, but the bandswich will need to be rebuilt or replaced.? If anyone has a switch/parts and/or a capacitor please contact me off list to let me know what you have.


 

I have a lot of parts for amplifiers and stuff. I handle estates for the local ham club and have?
processed estates for several Collins Radio engineers. They collected lots of parts over the years.
I don't have any experience with the Centurion, so I don't know what your parts look like.
Please send a photo of the switch and specs?for the capacitor - size, value, voltage.
Tom KD0HF

On Sat, Dec 9, 2023 at 9:42?AM Omni <selcor@...> wrote:
I have recently acquired a Ten-Tec Centurion model 422 that is in very nice condition, but has a blown up bandswitch and the plate tuning capacitor was arced.? I might be able to salvage the capacitor, but the bandswich will need to be rebuilt or replaced.? If anyone has a switch/parts and/or a capacitor please contact me off list to let me know what you have.


 

TenTec buit?their own variable capacitors. ?So their plates are unlike any others. ?I have some plates and if you want you?ship me the cap I’ll rebuild it for you. ?I should have a few plates left. ?Although it’s a handsome looking amp it’s certainly not the best performer in its class. ?It lacks inductance on 160 and the tank isn’t so hood on 15 and 10. ?




On Saturday, December 9, 2023, 6:51 PM, Tom Hess <Tomhess8@...> wrote:

I have a lot of parts for amplifiers and stuff. I handle estates for the local ham club and have?
processed estates for several Collins Radio engineers. They collected lots of parts over the years.
I don't have any experience with the Centurion, so I don't know what your parts look like.
Please send a photo of the switch and specs?for the capacitor - size, value, voltage.
Tom KD0HF

On Sat, Dec 9, 2023 at 9:42?AM Omni <selcor@...> wrote:
I have recently acquired a Ten-Tec Centurion model 422 that is in very nice condition, but has a blown up bandswitch and the plate tuning capacitor was arced.? I might be able to salvage the capacitor, but the bandswich will need to be rebuilt or replaced.? If anyone has a switch/parts and/or a capacitor please contact me off list to let me know what you have.


 

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“Although it’s a handsome looking amp it’s certainly not the best performer in its class. ?It lacks inductance on 160 and the tank isn’t so good on 15 and 10”.

?

So true, Louis. As Jim VE7RF also told me, my Emtron DX-2SP had the exact same issues on the low bands, but especially on 15, 12 and 10m. After a few years of 1200-1500W FT8 operation, my 10m and 15/12m tank coil tap flexible soldered silver plated conductors were black and the two connections to the tank coil had gone…..bad. I re-made these two connections with 8mm flat silver plated copper conductor, held in place with tightening brass screws onto the tank coil and silver solder to make sure. Luckily, my band switch was unaffected by the high circulating currents. I added inductance on the toroidal tank inductor by moving the tap an additional 3 turns for 80m. This improved the efficiency up to around 60% (was below 40%) on 80m. Then I added some fixed loading capacitance on 160m which raised the efficiency on 160m from around 30% up to 50%. All of our Ham multi-band amps have these same problems, but they are solvable with a little help from the experts on here.

?

My Emtron is now working well on all bands.

?

Cheers,

?

John VK6JX

?

From: [email protected] <[email protected]> On Behalf Of Louis Parascondola via groups.io
Sent: Sunday, December 10, 2023 1:10 PM
To: [email protected]
Subject: Re: [ham-amplifiers] Ten-Tec Centurion Parts Needed

?

TenTec buit?their own variable capacitors. ?So their plates are unlike any others. ?I have some plates and if you want you?ship me the cap I’ll rebuild it for you. ?I should have a few plates left. ?Although it’s a handsome looking amp it’s certainly not the best performer in its class. ?It lacks inductance on 160 and the tank isn’t so hood on 15 and 10. ?

?

On Saturday, December 9, 2023, 6:51 PM, Tom Hess <Tomhess8@...> wrote:

I have a lot of parts for amplifiers and stuff. I handle estates for the local ham club and have?

processed estates for several Collins Radio engineers. They collected lots of parts over the years.

I don't have any experience with the Centurion, so I don't know what your parts look like.

Please send a photo of the switch and specs?for the capacitor - size, value, voltage.

Tom KD0HF

?

On Sat, Dec 9, 2023 at 9:42?AM Omni <selcor@...> wrote:

I have recently acquired a Ten-Tec Centurion model 422 that is in very nice condition, but has a blown up bandswitch and the plate tuning capacitor was arced.? I might be able to salvage the capacitor, but the bandswich will need to be rebuilt or replaced.? If anyone has a switch/parts and/or a capacitor please contact me off list to let me know what you have.


 

Hi Tom,? I am looking for a transformer for a 30L1 amp that I am repairing for a SK's widow.? The current one appears to have a short and blows fuses.? You mentioned having Collins parts.?? Any suggestions?
73,? Bill K3HZP


 

Nationwide radio has a good selection of Collins transformers but it looks like they currently do not have one for the 30L-1.

Peter Dahl makes a replacement p/n?

PWDP13170

--
73 Nick KC0YKO


 

Sorry, I don't have any transformers for the 30L-1.
Tom

On Sun, Dec 10, 2023 at 10:38?AM Bill K3HZP <hzp_electronics@...> wrote:
Hi Tom,? I am looking for a transformer for a 30L1 amp that I am repairing for a SK's widow.? The current one appears to have a short and blows fuses.? You mentioned having Collins parts.?? Any suggestions?
73,? Bill K3HZP


 

I may have what you are looking for.? This was built by Heyboer over 20 years ago, and I've never needed to use it.? Still in it's original shipping box.
contact me direct for more info
ron
KA3JIJ


 

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I emailed you directly yesterday regarding the parts I am looking for. ?Did you get it?

?

From: [email protected] [mailto:[email protected]] On Behalf Of Louis Parascondola via groups.io
Sent: Sunday, December 10, 2023 12:10 AM
To: [email protected]
Subject: Re: [ham-amplifiers] Ten-Tec Centurion Parts Needed

?

TenTec buit?their own variable capacitors. ?So their plates are unlike any others. ?I have some plates and if you want you?ship me the cap I’ll rebuild it for you. ?I should have a few plates left. ?Although it’s a handsome looking amp it’s certainly not the best performer in its class. ?It lacks inductance on 160 and the tank isn’t so hood on 15 and 10. ?


 

Hi Ron,
I emailed you directly asking the price of the transformer. ? I don't know if you received it.
My email is good on QRZ.com.??? ....Bill K3HZP


 

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Hi Lou:

?

I sent a reply to this message on Sunday December 10th to your direct email address, but did not hear back from you. ?Can you still help with plates for the Centurion Plate Tuning cap?

?

73,

?

Steve

?

?

?

From: [email protected] [mailto:[email protected]] On Behalf Of Louis Parascondola via groups.io
Sent: Sunday, December 10, 2023 12:10 AM
To: [email protected]
Subject: Re: [ham-amplifiers] Ten-Tec Centurion Parts Needed

?

TenTec buit?their own variable capacitors. ?So their plates are unlike any others. ?I have some plates and if you want you?ship me the cap I’ll rebuild it for you. ?I should have a few plates left. ?Although it’s a handsome looking amp it’s certainly not the best performer in its class. ?It lacks inductance on 160 and the tank isn’t so hood on 15 and 10. ?

?


 

Steve, I don’t remember getting any email. ?If you want?to send me the capacitor I’ll try to rebuild it for you. ?Lou




On Tuesday, December 19, 2023, 8:02 PM, Omni <selcor@...> wrote:

Hi Lou:

?

I sent a reply to this message on Sunday December 10th to your direct email address, but did not hear back from you. ?Can you still help with plates for the Centurion Plate Tuning cap?

?

73,

?

Steve

?

?

?

From: [email protected] [mailto:[email protected]] On Behalf Of Louis Parascondola via groups.io
Sent: Sunday, December 10, 2023 12:10 AM
To: [email protected]
Subject: Re: [ham-amplifiers] Ten-Tec Centurion Parts Needed

?

TenTec buit?their own variable capacitors. ?So their plates are unlike any others. ?I have some plates and if you want you?ship me the cap I’ll rebuild it for you. ?I should have a few plates left. ?Although it’s a handsome looking amp it’s certainly not the best performer in its class. ?It lacks inductance on 160 and the tank isn’t so hood on 15 and 10. ?

?


 

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Hi Lou:

?

I resent the message I had previously sent you directly.? I would prefer to discuss this off list.

?

73,

?

Steve

?

?

From: [email protected] [mailto:[email protected]] On Behalf Of Louis Parascondola via groups.io
Sent: Tuesday, December 19, 2023 9:16 PM
To: [email protected]
Subject: Re: [ham-amplifiers] Ten-Tec Centurion Parts Needed

?

Steve, I don’t remember getting any email. ?If you want?to send me the capacitor I’ll try to rebuild it for you. ?Lou