HFU HF Underground

General Category => General Radio Discussion => Topic started by: cwhamster on April 08, 2018, 1338 UTC

Title: Pirate Broadcast power output
Post by: cwhamster on April 08, 2018, 1338 UTC

What is the typical ERP of the stateside stations we hear on or around 6900?
Just curious if anyone knows

Title: Re: Pirate Broadcast power output
Post by: CoolAM Radio on April 09, 2018, 1057 UTC

Maybe an idea - to check out the stations eQSL cards?

( topic "QSLs Received" )

Sometimes (Pirate-/Free-) Radio stations put this information
on their eQSL cards - !!!


André
CoolAM Radio - ShortWave
http://coolam-productions.tk
the Netherlands

Title: Re: Pirate Broadcast power output
Post by: ThaDood on April 09, 2018, 1536 UTC

That really varies with each stations. Solid state TX's typically are 25W carrier for AM and 100W PEP for SSB. Much of the tube gear can be from 40W to 150W carrier. Then, you have stations with either homebrew, or modified broadcasting gear, (Like Radio Metallica.), that claimed 10KW. And then, you also have small, homebrew, TX's like the famed Grenade that put out around a 10W carrier. So, it varies with every station.

Title: Re: Pirate Broadcast power output
Post by: cwhamster on April 09, 2018, 2101 UTC

thanks for both the responses. I checked the qsl thread and the equipment thread and learned some info.
Varies a lot like amateur radio, it appears.
thanks again
Happy listening
73

Title: Re: Pirate Broadcast power output
Post by: Stretchyman on April 10, 2018, 1046 UTC

10-40W (carrier) is fine for NVIS, but for F layer you need 100W+. I've never heard any of my test transmissions outside of EU using 40W. Soon as I fired up 100W using the same antenna I got numerous stateside reports. I'm in th' UK btw.


Str.

Title: Re: Pirate Broadcast power output
Post by: cwhamster on April 10, 2018, 2104 UTC

thank you stretchy .... makes sense...
73