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  1. (*steve*)

    A new project for me

    I saw this thing on ebay... Labeled as "Aviation Signal Tracer Vintage RF Gear" and with a description of "Have no info on this one other that it was purchased as a single item from a deceased estate from a relative of the deceased. They were keen for it to find purpose. I had intentions to...
  2. (*steve*)

    Rohde & Schwarz Transcope MUF 2 Manual

    As in the title. I'm trying to find a manual for a Rohde & Schwarz Transcope MUF 2. Any help would be appreciated.
  3. (*steve*)

    Another VARIAC!

    Here's something else that has turned up. A baby VARIAC with an interesting control mechanism. Looks like 60 to 85V 50/60 Hz 1.5A The knob pushes/pulls the slider using a metal tape. There's 2 brushes, which is a bit odd. And that's where the problems is: One of these brushes is...
  4. (*steve*)

    VARIAC? With valves!

    I just came across this rather interesting piece of equipment. I claims to be a VARIAC, but it's not like one I've seen before. It has no controls other than an input lead and an output socket. Oh, and a power switch. Inside, it's more interesting Three tubes, what looks like a...
  5. (*steve*)

    Mobotix sensor interface

    Hi peoples! I have managed to get a couple of 6Mpx Mobotix camera modules. Does anyone have any information on their interface?
  6. (*steve*)

    Hickok 800K (or is it 600A)

    I have a Hickok 800K that I'm getting back into working condition. It has a sticker nothing that it's "factory wired - 600A circuits". The paper roll is removed in this picture as I was cleaning the contacts on the switches and didn't want to damage it. The power cord was in awful...
  7. (*steve*)

    Can someone in the US assist me?

    Hi I'm trying to purchase some quite small and light things from the US where the seller wants over $US200 to send them to Australia. I believe they will fit inside a USPS flat rate box that will cost under $100 (still expensive, but waaay cheaper). Is anyone happy to have me send something...
  8. (*steve*)

    Boxing day sales!

    Well, I went shopping with the money Santa left me (the money my wife didn't spend on gifts ). I saw a nice Racal receiver (it looked small in the photos). So off I went. I ended up with a Racal RA17L Oh, and also a Racal RA117 And also another RA117 for parts Not to mention a pair...
  9. (*steve*)

    Siemens functionmeter b1081 - manual?

    This seems to be something that measures both voltage and current to calculate power, but it seems to have a stack of complexity. Does anyone have a manual? I have not been able to locate one.
  10. (*steve*)

    Heathkit Condenser Checker

    It's a really nice warm sunny day, so what better to do than to sit outside and restore something old and electronic! This is what I'm going to be working on today: I have no idea how long it will take me (I guess it will be more than one afternoon) but I'm going to be posting in real...
  11. (*steve*)

    Did you ever have one of those days?

    Did you ever have one of those days where you grabbed an AD8052 instead of an LMC6482 and wonder why the inputs were behaving really strangely? That wasted about half a day. The circuit in breadboarding uses one of each, and I was using the wrong one all day! Aaaagh!
  12. (*steve*)

    COVID-19

    Hi everyone. I am now entering my third day of self-isolation following becoming unwell with flu-like symptoms. Whilst I thought it would be a great opportunity to do some stuff I had lined up, I'm simply lacking the desire to do much at all. Neither my wife nor myself qualify for COVID-19...
  13. (*steve*)

    checking Chinese capacitors

    I bought some cheap Chinese 630V capacitors and I wondered... How good are they? So I built something to check leakage current. The simple idea is to place a current meter in series with the capacitor and connect it to a high voltage power supply. But as you can imagine, that's probably not a...
  14. (*steve*)

    My new multimeter

    Hi everyone, I just got myself a new multimeter! Isn't it a beauty! When I got it, the needle was sticking a little, so I took the cover off and "adjusted" it. It appears the needle was actually bent, so a little, careful, tweak was all it needed to be as good as new. It's an Aussie made...
  15. (*steve*)

    What do you look like?

    According to a machine learning algorithm I look something like this: Those who have met me might recognise me better here: :-)
  16. (*steve*)

    Sciaky model C.R.O.I. what is it?

    Here's my latest find. It looked interesting, but I don't know anything about it. It's 15.5 x 11.5 cm (x 11.5cm deep). Probably made in Australia. Capacitors are a mix of British and Australian made. Contains 2 x 6AM6 tubes and the display tube (so far unidentified). No obvious...
  17. (*steve*)

    I think I'm starting a collection

    I have quite a few different ones now. Whenever I find another one my wife tells me to get over it...
  18. (*steve*)

    isolating transformer and variac - what order?

    I have an isolating transformer and a variac. Would it be best to have the isolating transformer before or after the variac? My practice has been to put the isolating transformer before the variac. I can't see any real reason to favour one way over the other. On the other hand, my isolating...
  19. (*steve*)

    What did Santa bring you?

    Santa left this for me: What a thoughtful gift!
  20. (*steve*)

    BY409 datasheet

    I'm after a datasheet for a BY409 diode (and a BY406). I've found plenty of datasheets for the BY401, 2, 3, and 4. The scanned datasheet stops there :-( Any help appreciated
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