Cleanliness is next to Godliness, don’t you know ? Results are all that matter - and you PRODUCE ! Thank the Lord you are in our side of the universe. And curiosity only; what can you opine about the Heathkit service sticker on there from May 1977 ?
I have a SB-200 that I have had for years. One day it just quit keying and I put it away on mothballs. I bought a replacement relay but I never delved into it to see if it was just something simple ,, I have a Command Techologies HF-1250 so I really never worried about it but I stumbled upon this video and it reminded me of it ... I wonder if its still economical to repair these old amps. I wish to emphasize that I did make most of the Harbaugh mods many years ago. I think it has the original centron tubes.
Glad you’re feeling better. Great video. I’ve been thinking about buying a SB-200 but am nervous about it. Do these amplifiers have parasitic oscillation problems on 10 meters? I’ve also seen some issues on other TH-cam videos with input swr cannot get adjusted down to near 1:1 so different coils and mica caps are needed? Please advise if these issues are real or not. Thanks 73.
nicely done.
Thank you very much and thank you for watching
Nice rebuild. 🏆
You sound better. 👍
Get some rest, fall back Saturday night 😮
Finally got some antibiotics, wasn’t going away. Sinusitis turned into laryngitis
Cleanliness is next to Godliness, don’t you know ? Results are all that matter - and you PRODUCE ! Thank the Lord you are in our side of the universe. And curiosity only; what can you opine about the Heathkit service sticker on there from May 1977 ?
Thank you, you are welcome
Not sure I didn’t look at it closely
Thank you for watching
A clean bench is the sign of little being done.
Sure does
I have a SB-200 that I have had for years. One day it just quit keying and I put it away on mothballs. I bought a replacement relay but I never delved into it to see if it was just something simple ,, I have a Command Techologies HF-1250 so I really never worried about it but I stumbled upon this video and it reminded me of it ... I wonder if its still economical to repair these old amps. I wish to emphasize that I did make most of the Harbaugh mods many years ago. I think it has the original centron tubes.
Yes definitely worth repairing , great amp
Can’t say the same for the command tech , i don’t repair as parts are un obtanium
Glad you’re feeling better. Great video. I’ve been thinking about buying a SB-200 but am nervous about it. Do these amplifiers have parasitic oscillation problems on 10 meters? I’ve also seen some issues on other TH-cam videos with input swr cannot get adjusted down to near 1:1 so different coils and mica caps are needed? Please advise if these issues are real or not. Thanks 73.
No oscillating issues after I go through one, no need for a 1.1. 1.5 ot less is fine
The only reason I can think to paint that section black is that it will absorb heat better and reflect less back into the tube.
That mod they did is scary bad solder ugh did not understand what they were doing.
Was dangerous / lethal
Thank you for the comment and for watching
73
What causes the arcing on the tune circuit side.
Would need more info