CLEANING/DUSTING OUT TUBE GEAR

[Sonar]

FOUND IT!! I was looking for a Gates transmitter and it was a Bauer.

Story here http://www.qsl.net/ve7khz/broadcast.html

It was great that you found

FOUND IT!! I was looking for a Gates transmitter and it was a Bauer.

Story here http://www.qsl.net/ve7khz/broadcast.html

It was great that you found those pictures and posted them. Very interesting. Better than the pictures was the read. It's not surprising to see what people will go through to get something they always wanted even if it's going to take quite a round trip end much work to get it operational. Those transmitters are much larger than anything I've ever seen. My friend Windjammer (rip) used to operate his Viking 500 out of his home in Brooklyn New York and would occasionally invite me over. I'll never forget how those 811's glowed.. I once owned a Collins kws 1. Unfortunately I never got it operating on the band of my choice. It worked on all the other bands when tuned up but when it came to 11 meters it just didn't properly tune. The guy I bought it from in Pennsylvania knew what I wanted it for and I suspect hey intentionally somehow sabotaged it. It probably was a simple fix but no one in my neighborhood had the knowledge to get it working. I paid $450 for it and another hundred dollars to have the guy deliver it to me. I sold it for $650. The hundred dollars I made on it wentto the cost to have a 220 line installed in the room I used for my radios. Once again that was a very good read and thanks for posting it.

 

[Tallman]

I use various sized paint brushes and a Vacuum to get the loose crud off the chassis and components. Then wipe the t00bs with a baby wipe. Be careful as touching your fingers directly to, or using more than one swipe with the baby wipe will take the silkscreen right off the tube faster than you can say "dammit"

I was always taught to use a vacuum cleaner with a brush. I took and old television that had a convergence board just above the CRT neck. I used compressed air and broke several of the tiny coil wires on that circuit board. Added about six more hours to the time required to repair and calibrate the convergence. It was my TV and after that never used compressed air for cleaning PCB's.

 

[Captain Kilowatt]

I was always taught to use a vacuum cleaner with a brush. I took and old television that had a convergence board just above the CRT neck. I used compressed air and broke several of the tiny coil wires on that circuit board. Added about six more hours to the time required to repair and calibrate the convergence. It was my TV and after that never used compressed air for cleaning PCB's.

Whats the difference between blowing high pressure air and creating a vacuum and sucking air back at the same rate? Combine that with brush bristles and the same risk is present.I admit 100+psi from a very small nozzle may not be a great idea in some cases. Ihave used very high pressure air on SMD boards and even regular component boards but take care around coils as you should.

 

[Tallman]

Whats the difference between blowing high pressure air and creating a vacuum and sucking air back at the same rate? Combine that with brush bristles and the same risk is present.I admit 100+psi from a very small nozzle may not be a great idea in some cases. Ihave used very high pressure air on SMD boards and even regular component boards but take care around coils as you should.

The difference is how localized and intense the air flow is. When I damaged the convergence board the air hose was about 18" away from the board.
If you hold your hand 18" from a vacuum hose the air flow is not noticeable. If you aim compress air at your hand 18" away you will see visible evidence of the air column.
The flow rate of the vacuum would not be the anywhere close to what the compressed air or as focused.

 

[Captain Kilowatt]

The difference is how localized and intense the air flow is. When I damaged the convergence board the air hose was about 18" away from the board.
If you hold your hand 18" from a vacuum hose the air flow is not noticeable. If you aim compress air at your hand 18" away you will see visible evidence of the air column.
The flow rate of the vacuum would not be the anywhere close to what the compressed air or as focused.

I suppose but my point was that you would never have a vacuum hose 18 inches from the board but much closer and the air rushing past with the nozzle only an inch or two away would be very fast. Any further away and the vacuum would be ineffective. Anyway a convergence board could be easily damaged as could the yoke so prudence would dictate care either way. I always start off with the air nozzle far and work my way into it depending on the stubbornness of the crap to be removed. Dust bunnies can almost be blown away with a puff while grime needs to be brushed and blown/vacuumed.

 

[Tallman]

I suppose but my point was that you would never have a vacuum hose 18 inches from the board but much closer and the air rushing past with the nozzle only an inch or two away would be very fast. Any further away and the vacuum would be ineffective

I was just trying show the difference of a focused air blast vs a wide area vacuum.
The air flow of a vacuum is not damaging as a focused air blast.