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Both the 260-A Q-Meter and the 250-A RX Meter were made under the HP brand. Development continued for a while in NJ. A 250-B was made. The 260-A was replaced by the 4342A. RX meters vanished and

Hello looking for someone who has the frequency counter Systron Donner 6054b? (I own the service manual) be able to compare the measures to repair my thanks for the help Roberto

I am looking for a BNC Fuse Holder. Anyone have one they will part with ? Thanks, Dick, W1KSZ

Hi, The key panel data entry encoder on my HP54542C scope has worn out. Anyone know of a source for replacements? Numbers on the encoder are: 9436, and 1-2-36. The part is listed as replaceable

Hi Folks, I've been installing option 011 (HPIB) on my HP5328a counter wich has a bleu wire for arming wich goes to a pin behind the operating panel. In my counter that is also the pin where Channel

Hi MK whereaboutsare you in the UK? I will have to check but I may have a spare frame, though Iam not sure what state its in. Alan G3NYK

As title, I an in the UK, so would prefer to get one from the UK or europe as postage and vat would make it expensive otherwise Aslo would like to get hold of a non-working HP141T chassis, dont mind

We moved from there when I was five years old. I never knew that there was as many electronics companies in the area as you list. Dave

I am looking for any data, substitute, or availability on these transistors. The 7279 is an NPN and the 7278 is a PNP silicon as best I can tell. They are both TO-220 type cases with an 'EBC' pin

Hi, I'd like to give away the above mentioned service manuals for free. I only ask for refund of the shipping costs from Germany (registered mail for about US$ 8.00 to the US via PayPal). Best

On 12/26/2012 12:53 AM, Patrick Wong wrote: > > Hi Doug, > > I'm not sure how the OP's test would distinguish between > > 1) a situation where the attenuator resistor(s) is/(are) open and he > is

On 12/26/2012 12:01 AM, Max Robinson wrote: > > I don't have any antenna or RF impedance bridge that I trust. So the > 50 ohm > termination and "infinite" impedance test is all I have. > >

On 12/26/2012 12:01 AM, Max Robinson wrote: > > I don't have any antenna or RF impedance bridge that I trust. So the > 50 ohm > termination and "infinite" impedance test is all I have. > >

I don't have any antenna or RF impedance bridge that I trust. So the 50 ohm termination and "infinite" impedance test is all I have. Regards. Max. K 4 O DS. Email:

Ah you were luckier than I. My Marconi TF1066/4 not only had a broken attenuator rack (from removing from cabinet without first turning it inward) but also a burned out 47 Ohm resistor at the

The 3586, 8568, 8566, 8340 series units All used the RPG encoders with a lamp HP 2140-0016 (653 lamp ??). These RPG's were round flattened cylinders. if the lamps were old/darkened by age/misaligned

You may remember that I was concerned about the integrity of the output attenuator in my 608D. Today I checked it again the way I had calibrated it with a short cable and a pass through 50 ohm

I wanted to comment on this but it slipped my so called mind. For the gentleman who was having trouble with a 608 that was drifting and FM-ing I have some suggestions before getting into the RF cage.

I agree with you John, in that Joel is very helpful. This help not only extends to someone owning the latest and greatest VNAs, but people like myself who own obsolete HP kit. His suggest to repair

Am 25.12.2012 um 10:46 schrieb David Kirkby <david.kirkby@...>: I hope you find such a well paid job. In the unlikely event that you need an assistent I would work for you for a small fraction