Author Topic: RF Porn, teardown of Apollo Comms, the S-Band Transponder and Amplifier. (Read 5205 times)

BrianHG · « **on:** September 18, 2021, 03:57:26 am »

Enjoy 1960's 2.1GHz RF technology:

eti · « **Reply #1 on:** September 18, 2021, 04:26:42 am »

Yeah, could the internet DROP this tedious idiotic habit of appending <* porn> to the end of their favourite subject.

Please, but I know you won’t. It’s IDIOTIC, and juvenile.

KaneTW · « **Reply #2 on:** September 18, 2021, 04:30:36 am »

pornography (n)
1: the depiction of erotic behavior (as in pictures or writing) intended to cause sexual excitement
2: material (such as books or a photograph) that depicts erotic behavior and is intended to cause sexual excitement
3: the depiction of acts in a sensational manner so as to arouse a quick intense emotional reaction

seems like a dictionary-correct use of the word

eti · « **Reply #3 on:** September 18, 2021, 04:35:49 am »

Have a look -

https://1061evansville.com/can-we-please-stop-describing-everything-as-whatever-porn/

It’s about not following along with internet ways and being a lemming, basically. Doing that demonstrates a clear deficit in discernment.

james_s · « **Reply #4 on:** September 18, 2021, 05:18:34 am »

Reminds me a little of the inside of a HP spectrum analyzer.

BrianHG · « **Reply #5 on:** September 18, 2021, 05:35:24 am »

@10:30, is that hot snot glue on those connectors? Did they have Bostick glue back then?

BrianHG · « **Reply #6 on:** October 09, 2021, 01:55:39 am »

Part 2:

Enjoy.

BrianHG · « **Reply #7 on:** November 11, 2021, 03:03:40 am »

Part 3, enjoy!

BrianHG · « **Reply #8 on:** November 26, 2021, 09:21:45 pm »

Part #4, enjoy:

thinkfat · « **Reply #9 on:** November 26, 2021, 10:13:51 pm »

waiting for the next part

BrianHG · « **Reply #10 on:** November 27, 2021, 01:02:51 am »

Quote from: thinkfat on November 26, 2021, 10:13:51 pm

waiting for the next part

They are doing it really slow....

BrianHG · « **Reply #11 on:** December 01, 2021, 06:26:21 am »

Part #5, Enjoy...

BrianHG · « **Reply #12 on:** December 02, 2021, 12:23:51 pm »

Now they are beginning to pump. Part #6, Enjoy:

TheSteve · « **Reply #13 on:** December 02, 2021, 03:47:47 pm »

Very pleased to see Keysight has decided to sponsor Marc's channel - an excellent choice.

BrianHG · « **Reply #14 on:** December 05, 2021, 04:15:30 am »

An part 7, Enjoy:

BrianHG · « **Reply #15 on:** December 16, 2021, 08:41:16 am »

Part #8, now with the timing:

BrianHG · « **Reply #16 on:** January 18, 2022, 10:23:24 pm »

Part #9: Talk about those beautiful digit displays...

BrianHG · « **Reply #17 on:** March 04, 2022, 05:20:25 pm »

Part 10:

Part 11:

Part 12:

Part 13: (Finally, the first deep penetration.)

Terry Bites · « **Reply #18 on:** March 07, 2022, 05:35:59 pm »

Utter filth- shame on you!

TimFox · « **Reply #19 on:** March 07, 2022, 05:48:31 pm »

In Part 7, what is the purpose of the illuminated switch labeled "21 Hz 400 Hz"? I know 400 Hz is a common power distribution in aircraft, but have never seen 21 Hz anywhere.

free_electron · « **Reply #20 on:** March 07, 2022, 06:41:46 pm »

not much of a teardown ... i want to see the actual circuitry !

jmelson · « **Reply #21 on:** March 08, 2022, 06:34:54 pm »

Quote from: TimFox on March 07, 2022, 05:48:31 pm

In Part 7, what is the purpose of the illuminated switch labeled "21 Hz 400 Hz"? I know 400 Hz is a common power distribution in aircraft, but have never seen 21 Hz anywhere.

Likely it is the lock bandwidth of the phase lock loop.
Jon

schmitt trigger · « **Reply #22 on:** March 08, 2022, 06:44:24 pm »

I find it beyond fascinating how 50+ years ago engineers managed to design what they were required to design. With the limited available technology, as compared to the modern one.

So it it does qualify as porn to me.

Alex Eisenhut · « **Reply #23 on:** March 08, 2022, 06:49:46 pm »

Quote from: free_electron on March 07, 2022, 06:41:46 pm

not much of a teardown ... i want to see the actual circuitry !

This is as close as I can get you to 1960s RF stuff...

https://w140.com/tekwiki/wiki/1L20

http://ki3u.byethost3.com/Radio-PhysicsDIR/Substitute_uhf_osc_tubes_for_Tek_1L20.html?i=1

TimFox · « **Reply #24 on:** March 08, 2022, 08:00:23 pm »

In Part 9, the beautiful digital display did not use Nixie tubes, but back-projected characters. Each possible character had an incandescent light, a small transparency with the character on it, and a lens focused on the back of a screen.
I remember seeing them on digital counters in the early '70s, but can't remember the manufacturer. I did find this US patent: https://patents.google.com/patent/US3041600
An advantage was the capability of projecting arbitrary characters if you made the correct transparency, including +/-, units, or other messages.


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Author Topic: RF Porn, teardown of Apollo Comms, the S-Band Transponder and Amplifier. (Read 5205 times)

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