This Black Box KILLED The Russian Woodpecker
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- Опубликовано: 7 сен 2024
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A look at the Russian Woodpecker blanker by Datong, used to stop interference from the famous over the horizon radar signal on shortwave radio back in the 1980's.
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The bigclive part of me really wants to take it to bits 😁
Love to see him do that! I think he could reverse it non destructively. With good photos it wouldn't even need to be shipped to Big Clive.
Let get this onto a tray... nice! Mmmkay
I for one think we should send it to big Clive!
One moment, please!
Leave it with me
This is the kind of artifact that provides so little context to it's existence I can only imagine the confusion if archaeologists found one in 1000 years.
"Why did they need to blank woodpeckers? Was that a thing back then?"
"Clearly, it was meant to be carried in your auto to keep woodpeckers from attacking it."
"Ah, that explains the dual frequency. For both European AND American woodpeckers."
"Surely it must have been a religious thing."
@@StrawberryKitten 😁
Yeah but were they laden or unladen?
@@mfaizsyahmi
Laden or unladen? Laden or unladen?
GOT IT! Made in a maiden.
Yes, a most valid question. And one which Carswell will need to respond to, sooner or later.
@@mfaizsyahmi Better get the answer right the first time :-)
Even here on the East Coast of the US, the Woodpecker signal was extremely powerful. One defense that some people used was to send Morse code Dits at around 17 WPM or so, with a weighting that would cover most of the return echoes from the radar. This usually caused the Woodpecker to move off frequency. I knew some who would chase it around the band for an afternoon of entertainment. Knowing that they were frustrating some Soviet technician was half the fun.
>Knowing that they were frustrating some Soviet technician was half the fun
Believe me, this was not the case. I'm working with the son of one of the people working on the Дуга site near Komsomolsk-na-Amur. The echo blanking and signal processing was not a problem. Cost was the biggest issue and the installation was just not sustainable in the bad years approaching 90s
I just showed all three of your russian woodpecker videos to my 11th graders after we read "The Crucible" to show an example of how lack of knowledge can cause paranoia. Excellent work my friend.
Thank you for sharing this interesting and educational video. I can still remember the "Woodpecker" overshadowing the airwaves back in the 1980's - at least it's gone now and we are no longer affected by it.
Hi Lewis, Great video! I had two thoughts that I considered noteworthy, but you may want to disregard completely!: 1. Why not try it out with your radio and see how it degrades normal reception even though the woodpecker is not present? 2. Clive Mitchell (Bigclive) on his own RUclips channel does excellent product analyses and I'm sure he would love to have a look inside, reverse engineer it, make great comments and end it back to you in one piece!!
Back in that day, some amateur operators would zero-beat their transmitters to the woodpecker frequency and then transmit their (usual) CW signals, in effect riding the carrier. Of course, this was illegal but was said to be effective.
Good to hear the RADARS rally is back and see that particularly friendly M0 sat with you there, Lewis. I believe things went a little awry there not too long ago. RADARS was the only rally I would go to.
Cheers for the video as always.
"... and I just couldn't leave it there." In the world of vintage film camera collectors, your situation is called a GAS attack: Gear Acquisition Syndrome. Other than opening one's wallet (followed by the car boot), there is no known remedy.
I have an AEA "Moscow Muffler" that I picked up for $1 at a radio auction several years ago (I was the only bidder). A neat little relic from the cold war. It's basically the same idea as the Datong. I had to have it! I can remember the Woodpecker as it was still going in my earliest days in ham radio.
That Woodpecker made a mess out of HF bands in the US back in 70's thru 80's .Even out CB band in the US was affected. when propergatation was good that Woodpecker was over S9 for a long time. I never heard it over 30 Mhz in the US . interesting piece of radio gear to add the the collection. 73's
The Woodpecker was a pain on HF in Australia as well.
I almost bought the Black box but opted for their active antenna instead. I was given a Radio Shack DX 200 a couple of years ago and it still works fine, so I hope you enjoy yours.
Have a nice week, 73!
Datong made some good pieces of kit. When I got my licence in 1996, I bought one of their RF speech processors. In the days before digital audio processing, it was a remarkable gadget, that really made SSB transmitted audio louder and clearer. Very good.
Lewis,
Hi again my friend. In '91 I bought my first base HF radio. A Kenwood TS-450S/AT. It had two noise blankers. NB 2 was for the Russian Woodpecker. 73
I saw this gadget advertised in Popular Communications magazine in 1986.
Superb find that, worth a tenner just for the project case 👍
Too small for a flipping SINAD meter.... :-)
Datong sounds like it should be a dodgy far Eastern product. Always fascinating to hear your woodpecker tales. Never knew this type of thing existed, but then my only experience of the woodpecker was through my parents valve radio.
Datong stood for Dr. David Tong, the founder of the company.
I've been looking locally for the aea "Moscow muffler" myself
great name! lol
Me too!
I have one!! I picked it up at a radio auction for $1 several years ago.
The 'always shown' image of the DUGA radar is actually the receiving antenna array. The transmitter was about 50Km to the Northeast and a lot smaller in size. There is virtually nothing left of the TX site these days, but the RX still stands as a monolith to the Cold War.
Yep, I actually said that on the screen
Really appreciate the smooth sounds at the end of the video, now I don't have to worry about being woken up again in case I fall asleep during a video
The Woodpecker made my early years of ham radio a misery. I cold not afford the Datong kit as I was broke from buying my first HF TRX. I did see (hear) it demonstrated at a radio rally and I was impressed. I wonder if any audio recordings exist of it in use?
Datong made a few good products for the Ham market. I remember a four antenna VHF DF kit which we used at work for rapid determination of interference direction to our VHF mobile radio system. Somewhere in the loft I have one of their HF active antennas - must go and dig it out!
Any chance of a look in the box, so we can see roughly how it works? Maybe there would be a patent number on the PCB or whatever that we could trace.
I just returned the pulses to the radar from my rather healthy hf station and an automatic keyer set to their pulse rate. After a little coaxing they left the amateur bands for a bit.
Wasn't Datong basically just Dave Tong originally (before it had a multi million takeover?) & I see to remember that they might have had some interest from gchq ( or similar) at the time who weren't too happy about this technology becoming openly available.
Sounds right Ian mate
I remember meeting David Tong himself at various rallies and going to their Leeds address once to collect a doppler direction finder. Their products were ingenious. The company moved onto commercial products only after a while. I wonder what became of them.
Does anyone know?
According to Companies House, Datong were dissolved on June 6th this year unfortunately
Excellent find, and it was great to see it in the flesh when you picked it up.
Sad to say that Datong Limited was struck off the Companies House register and dissolved on 6 June this year (2023).
Like others have already said above, I would love to see the insides of that :)
Datong Electronics, (from the founder's name D. A. Tong), made quite a few cool gadgets. I have, and still use, one of their in-circuit transistor testers. Later they got into the TSCM, (Technical Surveillance and CounterMeasures), market, finally being bought by an American company in 2013
I had an interview there for a junior development engineer's job not long after graduating in the mid 1990s. I thought I had pretty much aced the technical interview, but didn't get the job. When I phoned them to ask if they could tell me why, they said I knew too much about the company! I guess I shouldn't have mentioned that I knew they did Secret Squirrel work, but it was pretty well known among radio amateurs in the area!
Wow how fascinating! It amazes me such a device was manufactured, for such a specific role. That radar must have really caused pandemonium in its day! Thank you for sharing.
A Rich Man's Squelch
.
Bless Up Lad
Here in the states we call them Hamfest but I have to say I like the word "Rally". Haven't been to one since Covid, but sure looking forward to going to a few this summer. Would of been nice to have one of those anti woodpecker boxes back in the day, it could get pretty annoying. Who knows we might need them in the future again 😆.
“Rally” reminds me of the old CB radio days. Fun times.
Frist post. I was expecting you to open the box and show the internals.
Live edit lol
Also yeah, I thought he would
I was hoping for a peek at the guts as well.
Great content, thanks for one more valuable video/
;Hf radios did have a woopecker blanker such as the Kenwood TS850S
@RingwayManchester >>> Great video...👍
Thanks for sharing ❤️👍
Very interesting and great find wow thats like a piece of history ⚡
Very interesting!
These things are extremely rare and essentially nonexistent in the US. I’ve been casually looking for one for quite some time with absolutely no luck. Congrats on your find.
I like reading comments from the russians. Very entertaining.
What a find.😊
Flippin 'ell I had a DX200 - it was shit in a way that's really, really hard to describe. But, with a a Q-multiplier and tuned loop antenna, it kinda, sorta, maybe worked OK.
I totally forgot about that age if my youth - maybe 9-10 years old.
And yet, girls these days just aren't intrerested until I mention I had a NRD535
In fact I can't even get laid unless I mention the NRD535.
But WaWaaWEEwah - when I tell them I have the Bandwidth Control Module fitted - OMG they cream their front ends in excitement.
I had the 500Hz filter too - but I only demonstrated it to the hot chicks that were down for a bit of hardcore PL or 5FG copy. EDIT: and with BWC module switched in, things got WAY tighter.
Obviously.
Man that JRC kit got me laid SO much with tech chicks- it's unbelievable. And nowadays, it's only distant memories, like Cherry Ripe, only even MORE distant. And with way less cherries nowadays. Such is life.
Hmm, maybe that's enough memories for now.
OK, so I may have had a little vodka. But fk me the DX200 was absolutely totally shit - I think it had a first IF of 455kHz or someting - 1940s tech turned 1980s consumer kit.
Am I misremeberingizationizing? I remember cranking the dial and getting EVERYTHING and EVERY bloody 400 or 500 kHz. Hell even a 10.7 MHz first IF would have been OK.
/drunken_rant
hic
I still have a DX-200 tucked away upstairs!
Dave Tong - hero of the day - where are you now?
Big name in the security RF world ("black kit", to those in the know)
We fought with the woodpecker daily in west Phoenix.
Be interested seeing inside of it
Just ten pounds...... (Checks pocket) "Im in danger".
I'd be curious to see what's inside!
Then Friday 19:30 you should be pleased :)
@@RingwayManchester Nice !!!
Was Nice to meet you there . I was the one who mentioned the speach processor that they did .
No need to flex about it. You're not getting more chicks because of it.
that artefact would have been sold 100$ in a Canadian Hamfest.
here people sell useless broken boat anchor for more than that.
When are we opening up the Datong?
That sounds naughty, doesn’t it?
Friday 19:30 uk
OK, now that's really cool!!!
Does it work? If you fed it an audio recording of the woodpecker does it attenuate the RF? Interested to know!
Good video!
holy crap talk about bringing back memory's' the wood pecker was a massive pain in the butt it had two speeds the first was a very very slow pulse about once every few seconds and then it would go into 10Hz full wood pecker mode it felt like it was sort of random as if it could pop up anywhere not sure if it was, i wanted one of those boxes they felt like the only way to deal with the noise at the time. i think that chernobyl did take out the dam thing in the end ?
Any chance of a peek inside?
I thought this was going to be about a radio device that killed birds.
I'd like to hear what it sounds like? Maybe put a fake woodpecker and another radio into a dummy load, then monitor it?
would be really useful to have an device that blocked people from transmitting telephony on 14.2300 ;o)
hi, is this device for sale?
16Hz is the electric power for trains ....
The power for trains cause radio interference?
Do you think the gadget was used both on the Wood Pecker and train noise?
Which country uses 16Hz? Here in the UK Trains use 50Hz 25kV AC. Same frequency as the national grid.
Probably Nikola Tesla
@@risvegliato : Germany.
25/15 kV ~` 16,7 Hz
@@156dave : You're sooo smart !
(Only you know nothing)
A big emp is going to make it all extinct.😢
what if datong was behind the woodpecker?
Imagine?!
something good that came out of Chernobyl going pop.. it took out the woodpecker.
Marconi incerdend?
PeckerWrecker 😉👍
"crazy" lol
your pushing red buttons - you know that ?
??
Luckily the noise blanker on my modern day ICOM manages to blank out our own home grown woodpecker on 70cms en.wikipedia.org/wiki/RAF_Fylingdales
Wow DX200, had one in my late teens, wow price on ebay 😂🤡