Radio Shack Micronta
22-191 (1992)
My first digital multimeter, still working in 2023
Laboratory
Vintage Test Equipment
A minimal collection of various electronic devices
These are photos of the lab equipment that I use to service any type of (tube, transistor or integrated digital) electronics. Although, I prefer digital electronics and programming, having been a computer technician for 12 years. Vintage electronics, as always, is a pleasure to service.
Hope you like the new web site. I'll be posting more equipment and details about my lab.
Rycom Instruments
3136A (1976)
Frequency Selective Voltmeter. Being used as a VLF CW/Beacon receiver with a loop antenna on 2200 and 630 metre bands..
Supreme Instruments Corporation
490 (Age Unknown)
Vintage Analog Multimeter
Jackson
612 (Age Unknown)
Vintage Analog Multimeter
Bach-Simpson
77 (1948)
Absorption Wavemeter-Modulation Indicator
RadioSparks Homebrew
Bench Power Supply (1995)
Linear Dual Isolated Adjustable Output of 1.2-20 Volts 3.5 Amps. Readout displays Voltage and Amperage. Voltmeter has an external conection to channel selected. Four different setups - Isolated, Series, Parallel and Tracking outputs.
B&K Precision
E-310B (1972)
Audio Signal Generator
Extech
EX520 (2014)
Extech True RMS Digital Multimeter. My pride and joy of owning a decent meter.
Monacor
FSI-4 (Age Unknown)
SWR, Power, Field Strength Meter. Maximum RF power of 100W. Frequency range of 1.5 - 150MHz.
Hameg
HM307 (1992)
10 MHz Oscilloscope with a small antenna is sensing a switching power supply running a computer monitor. This is a major noise source in my radio room, almost 200 mV P-P, OMG!
My I put my 1/2 pence worth input. As a Radio Amateur, I measure signal levels in microvolts. To see this on my scope would mask any form of reception completely void.
This image is a result of the only switching PSU in the shack, of a running DELL computer (19V. @ 4A.). The computer is well shielded in metal, the PSU is NOT. It's an external brick in PLASTIC.
Three things that bug radio/audio (in no particular order):
1. Ground Loops
2. Unshielded Switching PSU
3. Unterminated Signal Lines
POWER ONE
Linear Power Supplies (1995)
Group of Power-One Supplies. You can never have too many linear power supplies in your shack. Very quiet RF wise.
MFJ Enterprises, Inc.
MFJ-202B (2001)
Receiver Noise Bridge used to adjust any antenna. Works from 1 to 100 MHz. Can measure resonant frequency, feedpoint resistance and reactance. Not very accurate unless calibrated.
MFJ Enterprises, Inc.
MFJ-956 (2002)
Antenna tuner helps in rejecting images, intermod, and phantom signals. Tunable from 0.15 to 30 MHz, not very good in the AM Broadcast band.
Non-Linear Systems (NLS)
MS-15 Miniscope (1998)
Mini Portable Oscilloscope 15 MHz - Not used much any more, battery shot.
AVO
Multiminor Mk.1 (1950)
AVO Multiminor Mk.1 Made in England. Vintage, 1950s meter is fully functional and in very good condition. MMM! Didn`t notice the chip until I saw the photograph.
Micronta
Range Doubler 22-204A (1986)
One of two meters still in use on my service test bench.
Amprobe
RS-1 (1969)
Analog Clamp-On Mutimeter with leads.
AC Voltage 0-150/600 3% of full sale.
AC Current 0-6/15/40/100 3% of full scale.
Radio Shack
Science Fair Kit (1979)
My first multimeter. 1000 ohms/volt. Refurbish in 2023
AVO
Test Bridge (1944)
Test capacitors, resistors, leakage of capacitors, power factor, measures external standards, and a vacuum tube volt meter (VTVM).
Marconi Instruments Ltd.
TF2700 (Age Unknown)
LCR Test Bridge. Portable battery operated.
Non-Linear Systems (NLS)
Tracker (1998)
Component Tracker - Number One tester for diode and transistor jucntions, especially inside ICs.
RadioSparks Homebrew
Transistor Tester (1973)
My homemade Transistor Tester assembled from scrounged parts, like the meter from a 50-in-One Electronics Lab.
Superior Tube Tester
TV-11 (1964)
This is an emission type of tube tester, which some feel is inferior to the transconductance type of testers. However, if you are just trying to see if a tube is good or bad, then this one works for me.
General Radio
TYPE 740B (1950)
Capacitance Test Bridge
AVO
Universal Avometer Model 8 Mark IV (1971)
Current AC: 10mA-10A
Current DC: 50uA-10A
Voltage AC/DC: 2.5V-2,500V
Resistance: 0-20M ohm
Decibels: -15dB/+15dB
Accuracy: AC Voltage/Current ±2.25%
DC Voltage ±2% - DC Current ±1%
Sensitivity: AC 2,000 ohms/V
DC 20,000 ohms/V
Matsushita Co.
VP-911C (1965)
Vacuum Tube Volt Meter (VTVM) with RF Probe using an Eimac 2-01C UHF tube diode. The best way to directly measure voltage in high impedance circuits.
Astron Corporation
VS-20M (1989)
Features separate Volt and Amp meters. Output Voltage adjustable from 1.8-14.8 Volts DC. Current limit adjustable from 1.5 Amp to full load. Continuous Duty 16A@13.8VDC, 9A@10VDC, 4A@5VDC. ICS 20A@13.8VDC.
WELLER
WES51 (2010)
Soldering Station
posted/edited by Ralph [VE3XRM] | 20241223 | 22:08
When something is just not right.
How to reduce the magic smoke and limit starting over.
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