11 Set stuff

[Mike K]

Many of the 350ma meters are blown up and useless because the wireless operator forgot to change over to the 1 amp meter before hitting the transmit key after switching to HP

[Chris Suslowicz]

Originally Posted by Mike Kelly

Many of the 350ma meters are blown up and useless because the wireless operator forgot to change over to the 1 amp meter before hitting the transmit key after switching to HP

Still more thermocouple meters are blown up because idiots 'test' them with a dry cell - even an AAA cell will deliver sufficient current to blow the nichrome resistance wire in an RF Ammeter. (After that it's completely useless since there's no damping on the movement - it relies on the circuit of meter coil through thermocouple to provide the damping, so you can't just add a shunt or series multiplier and repurpose it as a 'normal' DC amp or volt meter.



Chris.

[cletrac (RIP)]

I received my two spare parts cases today. They both have the embossed lettering but the back side of the lid is smooth. How did that work?
I tried a wire wheel to remove the old paint and discovered the secret. The white embossed lettering is just built up paint.I can sand off the C and change it to a B. Now for a repaint job.
I have most of the case's contents on hand too.

[Ron Pier]

Ah that's interesting! Naturally it was first come first served and I got the last one, which unfortunately has a broken clip, hanging on by a thread! I didn't notice that in his description? The clip does work and I'll have to see about getting the split brazed up. Mine also has the big 19 and the Z number on it. I will need to read back through previous posts but I guess the Z number is wrong for an 11 Set? Ron

[Chris Suslowicz]

Originally Posted by Ron Pier

Ah that's interesting! Naturally it was first come first served and I got the last one, which unfortunately has a broken clip, hanging on by a thread! I didn't notice that in his description? The clip does work and I'll have to see about getting the split brazed up. Mine also has the big 19 and the Z number on it. I will need to read back through previous posts but I guess the Z number is wrong for an 11 Set? Ron

Case, Spare Parts, No.5B is ZA.0943 according to WftW Vol 2.

The clip is spring brass and if you braze it you will soften it so it no longer works. I think I have some gutted spare valve cases with the same clips and will have a look for you.

Chris.

[Ron Pier]

Thanks Chris. The best I could hope with this box, is make a cosmetic repair to the clip. Maybe even just soft solder if you don't find anything. Cheers Ron