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Messages - ThaDood

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1
I came across this bookmark, after forgetting about it for the last few years, and it does get you into the ballpark in calculating L & C values for a Chebychev Filter.  http://www.calculatoredge.com/electronics/ch%20pi%20low%20pass.htm  Get those harmonics and spurs under control.

2
https://www.radioworld.com/columns-and-views/readers-forum/letter-for-dx-with-sdrs-its-not-the-same-as-it-was  Alright, Boomer FWR me to this RW article, and I even had to add my $0.02 worth. True, we now have that full capacity to monitor world-wide SDR stations, record them, and then pick another. BTW, this capability is something that the FCC, as well as other GOV agencies, have had for years to monitor YOU. Now, if you are stuck in a motel room, the bottom of an apartment complex, or even unlucky enough to live in an HOA, then having this on-line SDR ability is a nice alternative. However, it is something completely different to see what signals reach your QTH. There, you still need a decent antenna setup, a decent receiver, most likely some kind of noise reduction and filtering, etc. And, at your QTH you can pick whatever flavor of radio you want. You can use an SDR, a 30-some year old rig with some DSP and mostly analog circuits, PLL based rigs, analog hybrid rigs, (Tubes & solid-state.), all tubes, and even a REGEN receiver. You still can pick your flavor of radio at your place of receiving. Technology has just provided us with more options to do so. Just my take... What say you???

4
Huh? / A wealth of radio & electroniocs INFO, M.W. Persons.
« on: July 08, 2025, 1557 UTC »
http://www.mwpersons.com/index.html     Go through the site and there's some INFO that you'll find useful for sure. I've heard of this dude before, but Boomer reminded me of this site. Good to know!

5
Woke up to country tunage on WVTS's translator FM FREQ 95.7FM. Even heard the full ID / Promos / Liners at 9AM WV EST time to hear it was KKOK, a 100kW blow torch.  https://radio-locator.com/cgi-bin/finder?sr=Y&s=C&call=kkok&nav=home  And, this was on that little Yorek YK-901 DSP portable, connected to a VHF High Band Delta Loop. Sure enough, CB was nuts and 6M FM 52.525MHz Simplex was full of CQ-CQ's. So, quite a "E" opening indeed, and totally over took that WVTS translator for minutes at a time. NICE!!!! BTW, the Delta Loop is the VHF version of this,  https://archive.org/details/pren2mdvuhfindoortvantennaandtestpdf/6342862%2C%20Pamphlet%2011-2014%2C%20hi%20res/   Being, the VHF High Version, centered for 200MHz, no real gain for the FM BC Band, but it still is very bi-directional, and is in a North / South facing on the wall.

6
Another stretch of mid-90's in the Eastern USA / Canada could be another chance to chase VHF / UHF DX this 4th Of July holiday weekend. Kind of cool, when you could get out to +80 miles on MURS, GMRS, and those HAM Simplex 2M, 222MHz, 440MHz, 902MHz, and even 1294.500MHz, FREQ's. If you have SSB / CW / FT8 HAM Bands capabilities, send out CQ-CQ when you notice those Weather 162MHZ FREQ's being heard further. You'll just never know.

7
General Radio Discussion / Re: The Buzzer is in the news again?
« on: July 02, 2025, 1534 UTC »
Hmmmmmmmmmmm... Sounds to me like the ultimate Number Station, but without the numbers. It seems like it serves the same purpose.

8
Kind of too bad that the FREQ, or station, wasn't mentioned from where that originated from. Unless, I'm missing something.

10
When, I woke-up for a bathroom break at 3AM, I checked the WX FREQ's on the indoor scanner's antennas. And, the Ashland, KY station marched in at full quieting, 162.550MHz. Normally, I can't even pick that up indoors, and it's very weak on the outside Discone. So a good opening to the West.

11
https://ka7oei.blogspot.com/search/label/helium%20neon     I've contemplated upon using narrow light beams, even modulated lasers, as an STL. However, you'd still have to deal with rain, fog, snow, falling debris, dust clouds, etc. Lines-of-sight is just that. So, a really neat experiment, but not practical for 24/7 data and COMM's delivery, except through Fibre Optic Cables. 

12
With this fist day of summer heatwave, starting in WV, Friday 6/20/2025, we may go to around 100 degrees this weekend and into next week. So, could that mean some nice VHF / UHF Tropo Propagation? Hope so... https://www.dxinfocentre.com/tropo.html   Especially, late night and very early morning. Our 162MHz Weather Stations make for some nice tax $$$$ bought VHF beacons. Oh yeah... Need an OTA Antenna for UHF HDTV DX reception? Build one.   https://archive.org/details/pren2mdvuhfindoortvantennaandtestpdf/6342862%2C%20Pamphlet%2011-2014%2C%20hi%20res/

13
The RF Workbench / Home-Brew, 20W, 5-Band HF Amp. Nice!!!!
« on: June 16, 2025, 1629 UTC »
https://www.qsl.net/on6mu/schemas/hf_5-band_mosfet_amplifier.htm     Hey, 20W on 20M and 15M can get you there, when the bands are wide-open. 40M, in the daytime isn't out of the question either. COOL!!!!

14
https://www.edn.com/teardown-inside-a-dsl-gateway/  Ya know, ya look for tear-downs of DSL MODEM's, and everyone that has done so, and taken PIC's & VID's, are more interested in the IC's. However, what we are interested in, for our Carrier-Current purposes, is the built-in coupling unit. That link is more promising. From the green RJ-11 connector, follow that to the square block marked MOC. That, appears to be the coupler. Now, if we can get the pin-out INFO on that, this maybe our freebie coupler, as well as those coupling mylar CAP's that I see in there. Hmmmmmmmmmmmm... Me thinks me getting warmer?

15
Equipment / Re: Ideal thickness of wire for longwire antenna?
« on: June 14, 2025, 1648 UTC »
Hmmmmmmmm... For receiving only, yeah, thickness doesn't seem to matter, as much. However, I've even transmitted with #26 AWG TV Deguasser wire with success. However, in theory, the thickness of a conductor helps to better broadband an antenna for use on TX'ing. My Windom is old, insulated, solid #10AWG copper wires, and, with the help of a tuner, I can transmit from 1800kHz to 54MHz.  Only thing about a bigger gauge, like #10AWG, is indeed strength, (Like Stretchyman says.). Thus far, it's held-up to many storms, high winds, falling branches, large hail stones, etc. So, it is nice to have. BTW, I used the #26AWG wire, to better hide the antenna from neighbors and the Landlord, at the time. So, ya got it, use it.

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