We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissible in your locale.

« previous next »
Pages: [1]

Author Topic: Low Power Broadcasting Book, James R. Cunningham .PDF  (Read 682 times)

Offline ThaDood

  • DX Legend
  • ******
  • Posts: 1342
    • Likely, not where you are.
    • View Profile
    • Extreme Part #15!
    • Email
Low Power Broadcasting Book, James R. Cunningham .PDF
« on: January 24, 2025, 2009 UTC »
http://www.gbppr.net/lpfm/Low_Power_Radio_Broadcasting.pdf    Don't know why link is listed as LPFM, it's more LPAM, and then some. This dude knew his stuff, so download this, while ya can. Lots of good INFO on "How-to's!" in here.
Logged
“I am often asked how radio works. Well, you see, wire telegraphy
is like a very long cat. You yank his tail in New York and he
meows in Los Angeles. Do you understand this? Now, radio is
exactly the same, except that there is no cat.”
-Attributed to Albert Einstein, but I ripped it from the latest Splatter .PDF March 2025 issue.

Offline Dave Richards

  • Full Member
  • ***
  • Posts: 126
    • Oakland, CA
    • View Profile
    • Ham Radio (and occasionally Part 15) Blog
    • Email
Re: Low Power Broadcasting Book, James R. Cunningham .PDF
« Reply #1 on: January 26, 2025, 2026 UTC »
Interesting stuff. I haven't seen this one before. Lots to read and digest. I have only done a brief look-through, but will read more later. Thanks Dood!
Logged
Oakland, CA
(SF Bay Area)

Offline TRI International

  • DXing Phenomena
  • *******
  • Posts: 3726
    • U.S.A
    • View Profile
Re: Low Power Broadcasting Book, James R. Cunningham .PDF
« Reply #2 on: January 27, 2025, 1347 UTC »
Yes he did know his stuff in fact I was using his entire AM collage radio 10 watt system for about 5 years before I sold the transmitter. I did not sell the AM tuner and just a few days ago with the help of the Dood and Boomer i was able to get the tuner hooked to a fox 20 watt transmitter.

No power out of the tuner but the signal goes out via ground wires. Did a few test this weekend with full power the range was close to 6 miles.
Great stuff.
Logged
We need another card to shut out the draught HW ABT URS?
Use Shazam app. to ID songs, listening direct Airspray RTL SDR , Ham It UP Plus connected to 2 V shape long wires  40ft. high with a MFJ 941C Antenna tuner
QSL to trlinternational@protonmail.com

Offline ThaDood

  • DX Legend
  • ******
  • Posts: 1342
    • Likely, not where you are.
    • View Profile
    • Extreme Part #15!
    • Email
Re: Low Power Broadcasting Book, James R. Cunningham .PDF? I want to .PDF this!
« Reply #3 on: January 27, 2025, 1914 UTC »
Well, the book that I really want to get-out and scan .PDF, page, by page, is the 1979 version of Ernest Wilson's - Carrier-Current Broadcasting : The Wired, Wireless. That's how I modeled my AM Carrier-Current Stations after. Ernie, really knew his stuff as well. I wish that Kinkos was still around, since they were great for project like that. We'll see...
Logged
“I am often asked how radio works. Well, you see, wire telegraphy
is like a very long cat. You yank his tail in New York and he
meows in Los Angeles. Do you understand this? Now, radio is
exactly the same, except that there is no cat.”
-Attributed to Albert Einstein, but I ripped it from the latest Splatter .PDF March 2025 issue.

Offline tybee

  • Full Member
  • ***
  • Posts: 127
    • Tybee Island Georgia
    • View Profile
    • Email
Re: Low Power Broadcasting Book, James R. Cunningham .PDF
« Reply #4 on: January 27, 2025, 2008 UTC »
.
Quote from: ThaDood on January 27, 2025, 1914 UTC
Well, the book that I really want to get-out and scan .PDF, page, by page, is the 1979 version of Ernest Wilson's - Carrier-Current Broadcasting : The Wired, Wireless. That's how I modeled my AM Carrier-Current Stations after. Ernie, really knew his stuff as well. I wish that Kinkos was still around, since they were great for project like that. We'll see...

Save yourself the hassle of scanning it, heres a pdf
https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://steampoweredradio.com/other%2520stuff/Carrier%2520Current/Carrier%2520Current%2520Techniques%2520Wired%2520Wireless%2520Broadcasting%2520Handbook.pdf&ved=2ahUKEwi5r_372paLAxWzRjABHUEdPCkQFnoECBcQAQ&usg=AOvVaw3IBMZJ5PgI1_Y4TX8cdGZK

Also soon the internet Archive will have uploaded some 1940s IBS Technical Data Books available which details how to setup a carrier current system like the did it at colleges back then

Edit
I knew I had that book but couldnt remember where it came from. . His book in pdf linked above originates from https://steampoweredradio.com/manuals.html which has a wide selection of others
« Last Edit: January 27, 2025, 2035 UTC by tybee »
Logged

Offline ThaDood

  • DX Legend
  • ******
  • Posts: 1342
    • Likely, not where you are.
    • View Profile
    • Extreme Part #15!
    • Email
Re: Ernie's book? YEA!!!!!!!
« Reply #5 on: January 28, 2025, 1737 UTC »
Thank you tybee!!!! Good find. Never found it on-line in the past. Good to know that it's out there now. Being 1979, everything radio-wise is still useful today, at the transmitter and Couplers end. Everything else, can have the 21 century touch. Hopefully, Steam Powered Radio will stay up there.
Logged
“I am often asked how radio works. Well, you see, wire telegraphy
is like a very long cat. You yank his tail in New York and he
meows in Los Angeles. Do you understand this? Now, radio is
exactly the same, except that there is no cat.”
-Attributed to Albert Einstein, but I ripped it from the latest Splatter .PDF March 2025 issue.

Offline TRI International

  • DXing Phenomena
  • *******
  • Posts: 3726
    • U.S.A
    • View Profile
Re: Low Power Broadcasting Book, James R. Cunningham .PDF
« Reply #6 on: January 28, 2025, 2106 UTC »
Great find and thanks for posting the link. Will be printing it up in a few minutes and added to the shack 8)
Logged
We need another card to shut out the draught HW ABT URS?
Use Shazam app. to ID songs, listening direct Airspray RTL SDR , Ham It UP Plus connected to 2 V shape long wires  40ft. high with a MFJ 941C Antenna tuner
QSL to trlinternational@protonmail.com

Offline tybee

  • Full Member
  • ***
  • Posts: 127
    • Tybee Island Georgia
    • View Profile
    • Email
Re: Low Power Broadcasting Book, James R. Cunningham .PDF
« Reply #7 on: January 29, 2025, 0501 UTC »
The pleasures mine, glad to.be of help.
Logged
Pages: [1]
« previous next »
 

HFUnderground T-Shirt
HFUnderground Garden Flag
by MitchellTimeDesigns