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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

Here is part 6, where the manually tuned, tuned input is almost complete. https://www.youtube.com/watch?v=_V8om_cRk-o

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

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

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

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

Adrian, Tom "Rauchen Verboten" W8JI cut way back on his drinking, and now most of the stuff on his website passes muster. We need to find somebody new to kick around, hihi. 73 Jim N6OTQ

I'm curious, how much drive are you driving it with? Constant carrier drive? How much power out? Ig and Ip? Bob W4JFA

There are 2 x chinese factories. One has a 12% failure rate.? The other has a 70% failure rate.? ?The good 3-500Z's all have the white base...and not the brown base. The 3-500Z's that Tom at CTR

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

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

I'll agree with VK4TUZ on good experience with RF parts.? I needed 2 3-500Z tubes for a Heathkit HL-2200 basket case that I restored.? After looking far and wide, I found all sorts of price

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. https://www.ctrengineeringinc.com/ 73? Andy?

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

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

Bill K3HZP, Contact Heyboer, they have all the PWDahl specs and can build a PWDP13170 cheaper than a rewind. They did a Globe King 500A modulation transformer for me and it's great. 73 Bill N4LG

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

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

Thanks for all of the reply. I will check the connections within the tank circuit. The band switch looks OK but I will investigate closer. Band switch is in the correct position when testing. -- 73

Is the band switch in good condition, in the correct position?