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Re: Replacement 3-500ZG

 

No, but I get all the fame!

Mike
VK2AMF?

On Thu, 14 Dec 2023, 14:06 Adrian Fewster, <vk4tux@...> wrote:
On Tue, Dec 12, 2023 at 02:22 AM, John Sparkes wrote:

You’re not the drummer in Fleetwood Mac, are you Mick ??

?

John VK6JX

?

Like this guy ? One of my favorite tracks, been a fan for 50 years
Re: Ten-Tec Centurion Parts Needed

 

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
Re: Ameritron AL-80 (Not A or B)

Tony Franco - K6ALF
 

What do you guys think about the correction kit sold for AL-80B?


73,?

Tony
Re: Replacement 3-500ZG

 

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You’re not the drummer in Fleetwood Mac, are you Mick ??

?

John VK6JX

?

From: [email protected] <[email protected]> On Behalf Of mfle2001
Sent: Tuesday, December 12, 2023 6:12 PM
To: [email protected]
Subject: Re: [ham-amplifiers] Replacement 3-500ZG

?

I ordered a pair from Penta Labs a year or so ago, very reasonable price with shipping to VK and amazingly well packed, so far so good in my TL922.

Mike
VK2AMF.

At 09:37 AM 11/12/2023, you wrote:

I have had good service from RF parts.?? Ups broke the tube in shipping and it was replaced no issue

Brian

On Sun, Dec 10, 2023, 1:26 p.m. DupyRail <andytron434@...> wrote:

FWIW, contact Tom, W8JI at CTR Engineering.?? From what I understand he has tubes F/S that are tested by him to make sure they are working.



73?? Andy?? K9ATX


On 12/10/2023 12:03 PM, Dave wrote:

Hello Group, I could use your help!

Looking to pick up a 3-500ZG replacement for my AL-80B.?? My choices are:

RF Parts Company: 3-500ZG (6-month warranty). 250$ (China)

DX Engineering: Penta Labs RF Vacuum Tube 3-500ZG (no warranty listed). 300$ (assume China?)

DX Engineering:? Ameritron 3-500Z Replacement Power Tube (All products manufactured by Ameritron have a one-year limited warranty) 360$ (assume China?).

Both vendors have always been reliable for me so my question:

Is the Ameritron tube worth the additional $$ or is it branding?

Is the Penta Tube? worth the additional $$

What would be the best replacement?

(sorry for writing a novel)

Thanks in advance!

73

K5AKM - Dave

?

-- 
?
"Where the Old Soo crossed the New Soo"
?
Duplainville, Wisconsin
?
?
Web page:?
?
?
Youtube Channel:?


Mike Fleetwood
Canberra Australia and Sidcup UK.

Worldwide email address is:????? mfleetwood@...

					


				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: Replacement 3-500ZG
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				
I ordered a pair from Penta Labs a year or so ago, very reasonable price
with shipping to VK and amazingly well packed, so far so good in my
TL922.


Mike

VK2AMF.


At 09:37 AM 11/12/2023, you wrote:



				
					
					

					


I have had good service from RF
parts.?? Ups broke the tube in shipping and it was replaced no
issue


Brian


On Sun, Dec 10, 2023, 1:26 p.m. DupyRail
<andytron434@...>
wrote:





FWIW, contact Tom, W8JI at CTR Engineering.?? From what I
understand he has tubes F/S that are tested by him to make sure they are
working.











73?? Andy?? K9ATX







On 12/10/2023 12:03 PM, Dave wrote:




Hello Group, I could use your help!



Looking to pick up a 3-500ZG replacement for my AL-80B.?? My
choices are:



RF Parts Company: 3-500ZG (6-month warranty). 250$ (China)



DX Engineering: Penta Labs RF Vacuum Tube 3-500ZG (no warranty
listed). 300$ (assume China?)



DX Engineering:? Ameritron 3-500Z Replacement Power Tube (All
products manufactured by Ameritron have a one-year limited warranty) 360$
(assume China?).




Both vendors have always been reliable for me so my question:



Is the Ameritron tube worth the additional $$ or is it branding?



Is the Penta Tube? worth the additional $$



What would be the best replacement?



(sorry for writing a novel)




Thanks in advance!



73



K5AKM - Dave 





-- 


"Where the Old Soo crossed the New Soo"


Duplainville, Wisconsin



Web page:?




Youtube Channel:?








Mike Fleetwood

Canberra Australia and Sidcup UK.


Worldwide email address
is:?????
mfleetwood@...


					


				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: Ameritron AL-80 (Not A or B)
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				








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Bob,









45-50 watts in for 350-400 out












73 Nick KC0YKO








				
					
					

					




From: [email protected] <[email protected]> on behalf of Bob <W4JFABob@...>

Sent: Monday, December 11, 2023 11:45 AM

To: [email protected] <[email protected]>

Subject: Re: [ham-amplifiers] Ameritron AL-80 (Not A or B)

?






Jim, I have one of these amps. With low drive from the exciter, the "load" will often end up all the way left/meshed. That's why I asked the op that.

Bob W4JFA?








On Mon, Dec 11, 2023, 11:50 AM Jim VE7RF <jim.thom@...> wrote:





It appears the padder(s) are not being switched in on 40-80-160m.? BUT u have the issue on all bands.? It's as though the load cap isn't even in the circuit, or lousy tank coil coil connections.














-- 
73 Nick KC0YKO

					


				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: Ameritron AL-80 (Not A or B)
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				
#8 brass washer over the terminal.





				
					
					

					


On Monday, December 11, 2023, 7:17 PM, Floyd - K8AC <floydsense@...> wrote:
It's been over 40 years ago I believe, but I think the final solution was to wrap a solid wire several turns around the contact where the wire was soldered.? There were sharp points that made it subject to corona discharge.? Mine was fixed a couple of times under warranty and I lived just 30-40 miles from the company so didn't have to ship it.

73, Floyd - K8AC








					


				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: Ameritron AL-80 (Not A or B)
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				
It's been over 40 years ago I believe, but I think the final solution was to wrap a solid wire several turns around the contact where the wire was soldered.? There were sharp points that made it subject to corona discharge.? Mine was fixed a couple of times under warranty and I lived just 30-40 miles from the company so didn't have to ship it.

73, Floyd - K8AC

				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: Ameritron AL-80 (Not A or B)
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				





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I was told, years ago, after experiencing the same malady in a Yeasu 2100 by a more experienced ham (sic) to never change bands with the amplifier on.? Seemed sorta silly? to me.? I heard later on in my journeys’ down ham’s road, that was only true when changing the band switch to 160.
?
I’ve never had a band switch problem, but let me tell you about the T/R relays in an AL-82…….I actually have 4 in my cupboard, just in case.? I have been through 5 already on a 3 year old amplifier.? L? I can even do it now without getting shocked!? J
?
Joe – W7RKN
From: [email protected] [mailto:[email protected]] On Behalf Of Floyd - K8AC
Subject: Re: [ham-amplifiers] Ameritron AL-80 (Not A or B)
?
I had one of the first AL-80s quite a while ago.? It was very good at vaporizing one of the bandswitch contacts when operating on 160.?? 

				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: Ameritron AL-80 (Not A or B)
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				
On 12/11/2023 1:47 PM, Floyd - K8AC wrote:
I had one of the first AL-80s quite a while ago.? It was very good at vaporizing one of the bandswitch contacts when operating on 160. 
So, did they fix the problem, and if so, how?? Heftier contacts or bandswitch?

73,

Steve K0XP

				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: Ameritron AL-80 (Not A or B)
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				
I had one of the first AL-80s quite a while ago.? It was very good at vaporizing one of the bandswitch contacts when operating on 160.??

				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: Ameritron AL-80 (Not A or B)
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				
Jim, I have one of these amps. With low drive from the exciter, the "load" will often end up all the way left/meshed. That's why I asked the op that.
Bob W4JFA?


				
					
					

					


On Mon, Dec 11, 2023, 11:50 AM Jim VE7RF <jim.thom@...> wrote:
It appears the padder(s) are not being switched in on 40-80-160m.? BUT u have the issue on all bands.? It's as though the load cap isn't even in the circuit, or lousy tank coil coil connections.






					


				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: Ten-Tec Centurion Parts Needed
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				





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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. ?


					


				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: Ameritron AL-80 (Not A or B)
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				
It appears the padder(s) are not being switched in on 40-80-160m.? BUT u have the issue on all bands.? It's as though the load cap isn't even in the circuit, or lousy tank coil coil connections.

				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							12 KW CCS ON 160-15M...USING THE 3CX-6000A7... PART 7
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				
Here is part 7. The 160-15m manually tuned, tuned input is now complete. And yes, the input swr is dead flat across each band .

https://www.youtube.com/watch?v=ev-648v_G0I

				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							12 KW CCS ON 160-15M...USING THE 3CX-6000A7... PART 6
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				
Here is part 6, where the manually tuned, tuned input is almost complete.

https://www.youtube.com/watch?v=_V8om_cRk-o

				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							12 KW CCS ON 160-15M...USING THE 3CX-6000A7... PART 5
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				
Here is part 5, with the manually tuned, tuned input + input RJ1A vac relay, input coax etc.

https://www.youtube.com/watch?v=sk-nmCjWa7I

				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: Ameritron AL-80 (Not A or B)
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				

  
  




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This reflector allows photos; it might help if you showed a photo
      of the wafer you need, as well as the spacing between mounting
      holes and the total number of positions.

    
But I wonder if MFJ doesn't sell that switch by itself?? They
      seem to be attempting to cater to we DIYers with some small amount
      of parts availability.

    

    
73,

    
Steve K0XP

    


    

    
On 12/11/2023 4:04 AM, Nick Jones
      KC0YKO wrote:

    

    

      
      Does the group have a source for the progressive shorting band
      switch wafer on the AL-80?

      -- 

      73 Nick KC0YKO
      
    

    
-- 

      See my QRZ.com page at 

  


				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							12 KW CCS ON 160-15M...USING THE 3CX-6000A7... PART 4
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				
Here is part 4, where the fil choke is installed, rated to handle the 78 amps CCS of fil current....and work down to 160m.?

https://www.youtube.com/watch?v=UWR39bxa_64

				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: Ameritron AL-80 (Not A or B)
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				
Does the group have a source for the progressive shorting band switch wafer on the AL-80?
-- 
73 Nick KC0YKO

				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
	

	
	
	
	


	

		
		
		
		
		
	

	

		
		
		
		
		
	

	
	

		
		
		
		
	



	

		

			
	
		

			
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