1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Test Equipment
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Threaded Mode
VTVM how the heck do i use it?
jake wells
Still Learning.
***
Posts: 194
Threads: 43
Joined: Jan 2019
City: Brownsville 42210 State, Province, Country: Kentucky
#1

06-29-2019, 01:20 AM
A elderly friend gifted me his restored heathkit lm-13 vtvm it needs a probe but my obvious question is can i use it like a regular volt/ohm meter or no?
(This post was last modified: 06-29-2019, 03:48 PM by jake wells.)
Find
Radioroslyn
Phorum Expert
*****
Posts: 7,286
Threads: 268
Joined: Dec 2009
City: Roslyn Pa
#2

06-29-2019, 01:36 AM
http://tubularelectronics.com/Heath_Manu.../IM-13.pdf

You might want to check the battery, it's for the ohms measurement only. The probe for dc volts probably uses a 1 meg series resistor in it. To answer your question Yes. And it would be a Vacuum Tube Volt Ohm Meter vtvom.
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry
Find
morzh
Odobenus rosmarus
*****
Posts: 15,797
Threads: 553
Joined: Oct 2011
City: Jackson, NJ
#3

06-29-2019, 02:08 PM
What the heck is VTVW? Or does W stand for M upside down?
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
Find
« Next Oldest | Next Newest »




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Looking for verification of correct schematic.
Definitely 870044RossH — 01:12 PM
12' Philco
Wonder if the chassis was big too.daveone23 — 12:38 PM
Philco 38-2 Automatic Tuning
Hi Ron, I have sent Radio Daze my concerns with the dial so I guess we will see. They used my original to make the repro...dconant — 12:27 PM
Hickok AC51 tube tester
How does the  5W4 and 83 tube filaments get fed?martinj — 12:25 PM
462ron
Hi Dan, your original dial appears to be lighter, easier to allow light through. My original is similar except it’s crac...462ron — 12:07 PM
Philco 38-2 Automatic Tuning
I received my new 38-2 dial. I'm a little disappointed. As you can see in the picture the blues have a white shadow. The...dconant — 11:13 AM
Philco 38-2 Low Volume
I have been playing my 38-2 for a while now and it is doing very well. I did have to replace the 6A8 (osc) as it develop...dconant — 11:03 AM
Philco Speaker Spider
Hello, Does anyone with a 3 D printer make the spiders for those old Philco speakers? That might be a good idea for some...dconant — 09:41 AM
Philco 16B Parts
Hello, I'm looking to buy a 16B but I'm not so sure of what I am looking at. First as seen from the picture it looks lik...dconant — 09:17 AM
Looking for verification of correct schematic.
Klondike98, Thank you. I'll double check that SN and get back to you. GarySP, Thank you for the schematic.RossH — 12:13 AM

[-]
Who's Online
There are currently 1843 online users. [Complete List]
» 1 Member(s) | 1842 Guest(s)
Avatar

>
  1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Test Equipment