Products > Test Equipment

Test Equipment Anonymous (TEA) group therapy thread

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Robert763:
I've been a bit quiert on here of late.
Very busy at work and as we have family visiting this weekend lots of work from SWMBO. This included replacing the shower yesterday. On a TE note I spent a fair bit of the weekend working on a bit of custom TE for the day job. Can't say what. I used to do a fair bit of this but someone in accounts decided it was a bad idea but that seems to have gone away. Hopefully I'll get some more. keeps me busy and saves the company money...
@Zoli our local post office is still closed so your care package is delayed.
A VNA arrived in the post but I've not had a chance to play with it yet.

Robert763:

--- Quote from: DH7DN on July 11, 2022, 06:51:55 am ---
--- Quote from: TERRA Operative on July 11, 2022, 12:22:55 am ---Well, I finally got one! The fabled true 50ohm 1% Tektronix '012-0482-00' coax cable for my SG503.  ;D
Courtesy of a seller in Kyiv, Ukraine (Yep, apparently the Ukraine postal service is making a point of still running!)
Found it for the cheapest price I've seen so far (but still too much, considering it's just a coax cable...), and still new in bag!  :D

--- End quote ---

Congrats! I ordered mine from the US and it wasn't very cheap (150 bucks IIRC). Damn you, Zenwizard Studios... you got me into this!   :-DD
Integral piece of calibration equipment.

1976 catalog price for this cable was like $16 ;D  (approx. $82 in 2022)



--- End quote ---

What is so special about it?
Electrical length? It can't be that stable as it uses BNCs.
I can't see whay any 36" good quality cable could not be used.

Neper:

--- Quote from: mansaxel on July 11, 2022, 04:26:57 am ---On the subject of fat in cooking, in this country where I am at the moment, they fry their pommes frites in duck fat.
--- End quote ---

Everything but vegetable fat. Makes them taste as if they had been cooked in dishwater. 

Real Belgian frites are cooked in beef fat.

Specmaster:

--- Quote from: tggzzz on July 10, 2022, 08:13:48 pm ---
--- Quote from: Specmaster on July 10, 2022, 08:01:14 pm ---
--- Quote from: tggzzz on July 10, 2022, 05:21:53 pm ---
--- Quote from: Specmaster on July 10, 2022, 03:10:58 pm ---
--- Quote from: tggzzz on July 10, 2022, 03:03:43 pm ---
--- Quote from: bd139 on July 10, 2022, 11:41:58 am ---Another YouTube channel I just found. Test gear tear downs. Very very good ones

https://youtube.com/user/alfa49alfa

--- End quote ---

Oh, just what I needed. Another time sink. NOT

--- End quote ---
That's fine, just watch the bits of interest, there will be something I'm sure.

--- End quote ---

Takes too long to find out. I can speedread at least 10* faster than people can speak. The time taken to load and skip thorugh a video and adverts is intolerable for "wonder if there's anythimg interesting".

--- End quote ---
What are these things you call "adverts?" Just get your self an adblocker for the computer and you save that time back.  :-DD

--- End quote ---

I thought google's yootoob adverts were difficult to avoid.

--- End quote ---
Well, I use Adblocker Ultimate and I don't get any adverts on YT at all.

Download it from here https://microsoftedge.microsoft.com/addons/detail/adblocker-ultimate/pciakllldcajllepkbbihkmfkikheffb

DH7DN:

--- Quote from: Robert763 on July 11, 2022, 07:03:20 am ---
--- Quote from: DH7DN on July 11, 2022, 06:51:55 am ---
--- Quote from: TERRA Operative on July 11, 2022, 12:22:55 am ---Well, I finally got one! The fabled true 50ohm 1% Tektronix '012-0482-00' coax cable for my SG503.  ;D
Courtesy of a seller in Kyiv, Ukraine (Yep, apparently the Ukraine postal service is making a point of still running!)
Found it for the cheapest price I've seen so far (but still too much, considering it's just a coax cable...), and still new in bag!  :D

--- End quote ---

Congrats! I ordered mine from the US and it wasn't very cheap (150 bucks IIRC). Damn you, Zenwizard Studios... you got me into this!   :-DD
Integral piece of calibration equipment.

1976 catalog price for this cable was like $16 ;D  (approx. $82 in 2022)



--- End quote ---

What is so special about it?
Electrical length? It can't be that stable as it uses BNCs.
I can't see whay any 36" good quality cable could not be used.

--- End quote ---

According to a posting from Alan W2AEW at TekScope Groups, it's just a "good quality" 36" RG58-type cable, no magic involved.
I've performed some measurements with NanoVNA V2 Plus4 in comparison to a 40" RG58 cable. The cable has a very low SWR at 225 MHz (maybe because of the SG503 operating range?), besides that... 50 +/- 4 Ohm

Shameless self-promotion: https://physik.co-i60.com/2022/01/new-addition-to-the-lab-nanovna-v2-plus4/





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