Hi
I have just collected an Electro-Metrics EMC-30 EMC test receiver.
It is the MkIV version build mid 1988. It came complete with custom transport case and the Instruction manual with circuit diagrams.
The manual for the analysis software is also there, but the printer port dongle and the software itself wasn't. Also not included are any accessories, antenna etc.
Designed and built at a time when technology was measured in kilograms, in its traveling case, the radio weighs 38kg so definitely a beast.
Despite its age, the radio is in very good condition. Just minor blemishes.
Prior to applying power, I opened up the radio to do a static power-off inspection to look for obvious failures. I didn't see any because I couldn't. Most of the circuits are housed in shielded metal enclosures. No short cuts taken here. I particularly wanted to inspect the power supply but it was in a welded enclosure that looked difficult to get into.
A sign of the times was the label identifying the RF Tuner Gear change, for switching across the bands.
The receiver has features of hand-made, low volume production mixed with high quality build techniques. The modules are all mounted and enclosed in a very military way but there was also a little wire-wrap and kludge soldered link wires.
When power was applied, all of the magic smoke remained trapped inside the radio. All of the knobs, LEDs and indicators worked. As far as I can tell, the receiver is fully functional. I need to hook up my scope and RF sig-gen to do a basic calibration.
At present, I am soak testing. It has probably been years since the receiver last felt the warmth of electron flowing.
Although the radio is obsolete and only receives to 1GHz, it can be used for EMC pre-compliance testing. To do that it really needs to be operated via the GPIB so I need to buy/build a GPIB/USB adapter. I can buy a electronically controlled antenna switch from Aliexpress.