Tube Testers and Test Equipment
Quality Test Instruments for Technicians or Hobbyists
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Hickok 209A large-dial VTVM – $69, AS-IS, free ship USA
If you want a VTVM to add to your bench or vintage test equipment collection, then here is one of the best, a vintage Hickok 209A. Features a huge dial — one of the largest you will find. A friend of mine, a technician for more than 40 years with his own repair shop, has used a 209A as his primary everyday meter for that entire time, 6 days a week, for four decades. Seriously.
This unit is original, all caps inside are original and will need replaced (many are the early wax caps). Also, the two D-cell batteries for the ohm function were left in there, until I removed them today, so that battery area has corrosion and will need to be cleaned & polished. No probes, no manual.
Since the unit has all original wax caps and original electrolytics, I have not tested it. Sells as-found. The unit was found from a guy that had a serious home repair shop, and this was his meter during those years. No reason to believe that it needs anything more than a standard rebuild that would be typical of any 60+ year old item.
Sells AS-IS, no warranty expressed or implied.
This tester is not serviced, therefore repairs and/or calibration will be required. Sold AS-IS. Case is missing leather handle.
True high-end professional tube tester. Just about as “high-end” as you can find among vintage USA testers. Precise 111 tube tester. Mutual Conductance and Emission testing. Selectable plate voltage & screen voltage, variable grid bias, and panel meter reads operating voltages so that you can make voltage adjustments on the fly for most accurate test. Probably the best tube tester that you may not have heard of. A big-time bargain among tube testers, assuming you are willing and skilled enough to do a standard service job on it.
I removed and thoroughly tested the panel meter to make sure that it works properly throughout its entire travel and for mV at full scale, then reinstalled. The tester also has a new grounded line cord, and some caps appear to have been recently replaced. Otherwise, the unit is untested.
I do not repair Precise models because I do not see them often enough to invest the time to become highly knowledgeable about them. If you want to invest the effort to service/calibrate, this Precise tester has a lot of “specs” that are impressive:
- variable plate voltage
- variable screen voltage
- variable bias, 0-10v and 0-50v
- ability to test both Gm and Em for applicable tubes
- metered Bias to verify that you are applying correct bias voltage according to setup chart
- metered Line voltage
- gas test
You can download the manual and service information at this LINK. Take the effort to read that manual, and you will see that this is quite an impressive and extremely professional tube testing instrument. Well worth the effort if you plan to keep the tester for yourself. The manual also has detailed calibration procedure.
This Mighty Mite has a meter with a mechanical issue, it cannot be zeroed out at rest. That makes the meter defective in my opinion, but depending on your standards, not unusable. Therefore, with a substandard meter, the tester does not meet my standards, so it is being sold AS-IS. The “guts” of the tester appear to be mostly original except that the tube has been replaced, therefore other servicing or repairs may be required for better operation. If you have a replacement meter, or meter accuracy is not that important to you, this is a cheap mighty mite, and also cheap if you need switches or other parts to fix one of your own Mighty Mites.
No setup book or manual included, but I will include setup data as a PDF file burned to CD disk.
Overall cosmetic condition is “fair”, with primary negative being rusty hinges and latches, which could be buffed-polished if you want to take that effort.
Eico 147A Signal Tracer, professionally serviced, with 2 PROBES (1 each RF probe and Audio Probe), $129 free ship USA
Yes, you are getting BOTH probes (one for RF, one for AF) with this nice Eico 147A signal tracer. This is a quality model, works well for both Audio signal tracing and RF tracing.
The uses to which you can use a signal tracer are almost endless. Awesome instrument for audio repairs and radio repairs.
- many new capacitors installed
- new input jack installed for the AF probe (RCA style, which allows much easier sourcing of probe cables for future needs)
- Murata X1Y2 class RF suppression capacitor installed on AC line
- “AF” audio probe
- “RF” radio probe (original EICO)
- overall good condition (front panel and metal case)
- very bright magic eye tube
- copy of instructions included
Knight deluxe Resistor-Capacitor Substitution box, real nice model – $49.99 free ship USA
Very good condition. This is an excellent choice for any technician.
- Dual simultaneous operation – you can use the Resistor side and the capacitor side at the same time!
- 36 resistor substitution options (each at 1W or better) from 15 ohms to 10-Meg
- 18 capacitor substitution options from 100pf to .22uf
- Silicon diode substitution
- 40uf @ 450v electrolytic filter capacitor substitution
I have checked out the entire box, and all values are within common-sense tolerance in my opinion. I also replaced several of the capacitors with new, and installed a new 40uf @ 450v filter cap. Cleaned the box inside & out. Cleaned switches. Resoldered quite a number of bad solder joints. Installed 2 nice sets of heavy duty vintage USA test leads (alligator ends). Size dimensions: (approx) 7.5 x 8.5 x 3 inches.
powerful 45-AMP Filament transformer 6v – $39 free ship USA
Here is a whopper for your tube projects! A massive 45-amp filament transformer. Nominal input 115vac, nominal output 6.5vac @ 45A. Want to build a massive tube warmer/heater? Now is your chance. With this transformer, you can power the filaments of almost *50* (yes, fifty…) 6L6 tubes at the same time! Size: approx 4L x 3.25W x 4.5H inches.