30L-1 Performance and Reliability Improvement
6,587
Published 2023-01-25
All Comments (16)
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Great video. We miss watching your videos .
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Ohmite OY series 100 ohm 2W is also a composition resistor and can be used in the parasitic suppressors; available from stock at DigiKey
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thank you for sharing your knowledge, I'm from Brazil and I will implement these modifications. 73 PY5NC
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Outstanding! 2 x 572b i'm going to do this... Many thanks... 73 de K4WRF
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Please tell me how to run this amplifier with only two valves!
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Getting ready to get back on the air after a 10 year layoff and I was wondering about using 572-Bs in my 30L-1. I think that when I put it all to bed I had just put a new set of 811-As in, but it's nice to know I can do the switch when those get used up. Thanks!
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Very nice video and after watching this, I bought preowned 30L-1! I am interested in how 30L-1 works with 10, 18 and 24MHz WARC bands. How would be SWR between Transceiver and 30L-1.
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I have one that i convert to GI7B tubes but i would like to ask you about the transformer, do you use the stock one or something different? I can't decide if i will use a bigger external power supply or the stock transformer. Thanks, Chris
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How are you getting that output if you're only using two valves? I'm confused because doesn't it use four?
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Comment connecter un transceiver moderne relais tampon etc? Merci 73
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I have this amplifier with the same modification, but I get the same power output as you are getting with the four valves and you said that your only using two, can you please explain?
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I just got one of these that have the 572s installed. Why don't they put 4 of the 572s in since theres room? Sorry, I'm clueless about this amp.
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Hello, excellent. I have a 30L-1 with 4 811s, but I know of people that replace the 4 811s y 4 572Bs. Is that ok? Better or worst than 2 572Bs? Also, the mods shown at the begining are still valid is using 4 811s? Thanks
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Great video, but need help finding 100 ohm non-inductive resistors, as none available from stackpole?
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My question is do you perhaps have a written upgrade procedure for this mod and a parts list? or better yet can you provide the needed parts. Thanks 73 de K2AES
