Philips PM2505 electronic meter

[Mike Watterson]

The meter is averaging only on AC unfortunately but has a bandwidth up to around 30 kHz.

Likely due to the op-amps.

I have an old VVM. It does Ohms too. But I was surprised. Though the scale calibration is only good to a few MHz it "works" to UHF! All valves, an EB91 for AC and an ECC82 amp in mine, though those are really the same as the listed 6AL5 and 12AU7.
Tech TE-65
https://bama.edebris.com/manuals/tech/te65

Though Mains based it has a D cell in it! Have to take out 6 screws to replace it. It seems to be used for Ohms.

https://www.radiomuseum.org/r/tech_rmsv_...65te6.html

The manual writes of using a specific probe for over 60 MHz. I used a scope probe. I've also used it with a T piece and 50 Termination.
Technical data:
Internal resistance is 11MΩ on all ranges (Cheap DVMs are 1M Ohm and better ones are 20 M Ohm)

DC voltage measuring ranges: 1.5/5/15/50/150/500/1500V

AC voltage measuring ranges
Veff: 1.5/5/15/50/150/500/1500V
Vss: 1.4/4/14/40/140/400/1400/4000V

Resistance measuring ranges: 10/100/1k/10k/1M/10MΩ

dB: -10 to +65dB (0dB=1mW at 600Ω)
Normal accessories
DC voltage test probe
2 measuring leads
1 monocell 1.5V
1 operating manual
Special accessories
HV test probe 30kV (28.50 DM)
HF probe 250MHz (26 DM)

Also sold in Germany as Conrad brand and as an Eico kit!
http://www.radioboatanchorblog.com/blog/...estoration

Better manuals http://bama.edebris.com/manuals/eico/232(3)/