Test Equipment Anonymous

You are in luck with a dodgy connector on the 8714ES. Unlike most HPAK analysers the connector is not part of a bridge assembly. It's just a N to SMA adaptor. You can even order one from Keysight 08711-60038 . Before you do that, pull the front panel and check the SMA connectors are tight including ...

Nice "little" VNA (my 8720C is 6U high). I'm glad you can see it has advantages over the tiny and nano VNAs. Reading the other thread I think you both got a good deal at £375. I had a 8754A & S parameter test set (both 2.6GHz version) at National Hamfest and didn't get any interest oth...

I heard the FRARS was good this year. It used to be my local rally but it's a bit far now.
I'll have to try Telford next year. As we all know rallies and the hobby have changed significantly.

Robert.

Went to the UK "National Hamfest" on Friday and Saturday. I was selleing in the fleamarket area. I'd not sold there before or attended on the Saturday. It was bit disappointing. Very little test equipment for sale and a lot was literally the same items as last year. I bought a New Peak DCA...

So after about 7 hours driving this is in the boot: Agilent-8703A.jpg It's a late one, badged Agilent and made in 2001. Even more surprisingly it was last calibrated in June 2023 by Keysight. So I took the Lightwave interface off while it was still in the boot so I could lift it without doing myself...

Doing a TE shuffle tomorrow. Trying to downsize and as my HP 8753B VNA has been made redundant by the JDSU JD745 (4GHz) it's been sold. Buyer is 3 hsours drive away and was going to collect it. Then in the middle of discussions I noticed a HP 8703A "Lightwave Analyser" on ebay. Collection ...

I wonder if the missing components provide a V & I measurement capability? The Farnell switch mode chassis mount power supplies are excellent apart form the odd RIFA failure. A long time age I donated three used 5V (50A IIRC) ones to a local amateur radio repeater. They were used in series and a...

Any of you HP nick-see counter fanboys want a 3734A before it gets turned into a clock by some numpty on ebay?
It the 5 digit version. Worked last time I plugged it in. Located in Cambridge UK. Make an offer in a personal message...

Robert.

No I wasn't selling. only a quick visit.
There was a lot VMARS type stuff.

Having commented on the cost of switch wafers last week guess what I bought at Dunstable Downs... Yes, a box of switch wafers. All new Modern type, not paxolin. Mostly 32mm but a few 25mm complete switches with odd configuration wafers. Two types of 32mm 6PCO and 1P4W + 1P4 position rotating open. T...

Anyone bought wafer switches lately? Had a look at some today for work (I've plenty of stock for personal use) and was shocked at the prices. £30-50 per wafer and £50-60 for the mechanism :shock: That's 5 to 10 times what the were last time I looked. Seriously considering a board full of DPCO relays...

Anyone in the UK want a R&S CRTU / CMU 200? 0.1-2700 MHz sig gen with AM FM DSB SSB mod, 10-2700 MHz Spectrum analiser and uW to 50 W power meter. £500. Can't post it but I'll be at Dunstable Downs on the 18th...

Robert.

I assume you are not in a rush. I'm off on holiday for a fortnight on Thursday. I'll contemplate it. It would really have to be picked up and seen working. I have the impression you live around Cambridge, or at least roughly in the East Anglia area. Yes just off the end of the M11. I'll be at Dunst...

£800

The 2955 is OK but once you have used a HP 8920A/B or one of the R&S units you won't want to go back to it.
The only problem with the CRTU and basic CMU 200 is the lack of analog audio demodulation and SINAD measurement.
I have a cheap 8920A if you are interested.....

I went to the local radio rally yesterday. Really just a carboot sale for the local repeater group. I was selling. Mostly big stuff with low value like a scope mobile and instrument mobile. As I on my own there wasn't much opportunity to look around and buy. I did however pick up one item of TE. A R...

Apprenticeships: These are still offered by my employer and have been for over 100 years. The current chief engineer is an ex apprentice and has been with the company for 40 years.... Scaffold towers. Renting these also means that they have an up to date inspection tag which removes another administ...

The granualar material in high rupture current fuses isn't so much for arc quenching (stopping conduction) as energy absortion to stop the fuse physically exploding. It presents a large surface area to the hot expanding gases cooling them and reducing internal pressures.

It was actually a well thought out con. Freezer level temperature does affect the crystaline structure of some alloys. For example in aviation after annealling rivets they work harden at room temperature. This can be slowed by keeping them in a freezer. The treated fuse that blew quickly was obvious...

tggzzz wrote: ↑Tue Apr 01, 2025 8:46 pm

Robert wrote: ↑Tue Apr 01, 2025 8:09 pm And the date is.....

March 31st
https://www.eevblog.com/forum/blog/eevb ... msg5866735

Not in OZ. They are first for the new year too...

The eevblog video posted yesterday ( https://www.youtube.com/watch?v=6TYtdpbFWuA ) about fuse characteristics being permanently changed by exposure to low temperature was interesting. He was showing fuses in the context of current shunt overcurrent protection in multimeters. Dave didn't mention any...

OK lets get this back on test equipment. I bumped into a retired work colleague in a supermarket car park last week and he asked me if I would try to repair an instrument for him. Later that day he turned up with a 1980's Roland Juno 60 synthesizer. That is a musical keyboard not a a RF signal gener...

RG-58, a crimp BNC and a BNC to N adaptor at 10GHz?
Your test set-up is not optimal

FRARS used to be my local rally but I haven't attended for many years. To far to go.

I'll be at Dunstable Downs (again). It's come around quickly. Haven't decided if I'm going to sell or not. Good place for transfers though if anyone wants heavy stuff. I've got VNAs (HP 8753B & 8754s) Collins 618T, maybe a 8920A, R&S PSM, Odetics GPSDO etc.

Robert.