About Us

COLIN LAMB wrote:
"Messed up probes are the #1 reason than many otherwise good 410Bs get
junked, which is a shame."

My response might offend the purists, but I can defend myself by stating
that I am just an amateur.

I hate throwing things out. And, I hate spending money on parts that cost
more than the instrument. So, if I had an HP 410 that had a bad probe and I
did not wish to invest in a new tube, I would find a tube that would fit
into the probe and used the appropriate filament voltage. Even a triode can
be used as a diode. The fact that the fitting of the tube might destroy the
frequency response may not be a big factor. Heck, we usually only operate
up to 450 MHz. Even if the calibration is not absolutely correct, it can be
tested easily with a signal generator and calibrated with a calibration
chart. What you end up is a ******* HP 410, which is still better than a
broken one.

I must admit that I have *******ized a lot of things instead of throwing
them out. Some of the stuff I have works better than when it left the
factory. Some does not. In each case, I have outsmarted the trash man.

73, Colin K7FM

Have a look at Tubeworld

http://www.tubeworld.com at

They advertise NOS EA53 for $10 each

73 Lionel VK4NS

It appears they have zero in stock.

Barry - N4BUQ

Thread Tools	Search this Thread
Show Printable Version	Search this Thread: Advanced Search
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
RCA WV-97A SENIOR VOLTOHMYST TUBE VTVM with PROBES:-)	Caveat Lector	Equipment	0	May 21st 05 03:01 PM
FA: $18>HEATHKIT IM-13 TUBE TYPE VTVM with TEST PROBE>Tonite	cooltube	Equipment	0	May 8th 05 03:08 PM
FA: A Give-Away:-( CLASSIC HEATHKIT IM-13 TUBE VTVM	Rich WA2RQY	Equipment	0	October 23rd 04 02:25 PM
FA: A Give-Away:-( CLASSIC HEATHKIT IM-13 TUBE VTVM	Rich WA2RQY	Swap	0	October 23rd 04 02:25 PM
FA: CLASSIC HEATHKIT IM-13 TUBE VTVM w/probe>SUNDAY!	Rich WA2RQY	Swap	0	September 4th 04 03:41 PM

Menu

About Us