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 permissable in your locale.

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Messages - Radio Station

Pages: [1] 2 3 4 5 6 7
The Starlink satellite internet system will make over the air (AM FM TV HF) radio and TV much less important since people will be able get radio and TV to underserved areas around the world. It will be interesting to see in the future how well over the air broadcasts will survive in the long term as more people around the world get connected to the net.


Shortwave Pirate / UNID 5145 USB 0115 UTC July 12 2020
« on: July 13, 2020, 0117 UTC »
0115 S9

0127 cant make ID out.

0128 Neoslave - Hypnotic Nightmare

0134 Talking and now silent and off the air.

This forum is used to make money (by some) that leads to the all problems noted here (finally exposed).  Instead of being a free exchange of designs and ideas of many people to achieve a goal that all can benefit from.

I think there's plenty of room here for both. Commercial products can exist side by side with "free" (I assume you mean open / public domain). The former doesn't preclude discussions of the latter. Some people do not have the equipment (or technical ability) to build their own equipment, or don't want to.

Well coming from someone that also sales stuff I can understand your view as you understand mine.

This forum is use to make money (by some) that leads to the all problems noted here (finally exposed).  Instead of being a free exchange of designs and ideas of many people to achieve a goal that all can benefit from.

The RF Workbench / Re: Simplest Tx
« on: April 29, 2020, 1446 UTC »

You summed it up perfectly.  :)

Equipment / Re: R390A
« on: April 26, 2019, 1809 UTC »
I have both the A version and the non A version R390. From my tests the R390 performs better on not overloading in the broadcast band with strong signals like the R390A which you can correct. The A version has a different mixing scenario and has one less RF front end tube in it. Being a cost reduction version. The R90A filters are great being a improvement over the non A. I have a SDR interface taped off before the IF filter stage for a wide 50Kc spectrum display or off the IF output up to 16kc wide. This brings the R390/A up to great performance with SDR software.

Shortwave Pirate / Relay Station 6880 AM 1530 UTC Apr 15 2019
« on: April 15, 2019, 1541 UTC »
1530 S5 into VA SDR with a very nice set of music.
2020 S6 holding up well for a 20 watt carrier.

Shortwave Pirate / Re: KAOS Radio 6940 USB 2344 UTC 4 March 2019
« on: March 17, 2019, 1545 UTC »
:D That's Insane dude. The IQ wonder if you encoded with a phase delay, if you could get out a pseudo stereo effect?
Viva -

There are different ways you can produce stereo in your transmission. But most of all the listeners won't bother to decode it anyway. A easy way is just to post process the audio with pseudo stereo in real time that way any station that is listened to will have this effect. Even though it is not true stereo the I/Q with its 90 degree phase shift between L /R sounds cool.

For Sale / Wanted / Barter / Re: DDS Signal Generator PCB
« on: March 11, 2019, 1519 UTC »
The AD9850 (seen in the photo of this DDS ) and AD9851 DDS boards off eBay do not use a TCXO oscillatior time base so they will drift around a bit. If you use it for AM that's fine. If you want high stablity I would change it to a .1 PPM TCXO this can be easily added to the AD9851 30 MHz time base. You can buy the TCXO off eBay. The DDS I designed is better than .01 Hz stability.

2315, 5 9 +10  on 6.924.67
2322 " That Lady - The Isley Brothers " I have not heard that song in a long time

Shortwave Pirate / Re: UNID 6940 USB 2344 UTC 4 March 2019
« on: March 04, 2019, 2354 UTC »
2351 17 dB signal with nice clear 4KC audio. Sounding nice in I/Q stereo

Shortwave Pirate / Re: UNID 6955 AM > USB 0113 UTC 2 Feb 2019
« on: March 02, 2019, 0156 UTC »
0150 15dB Nice signal

Shortwave Pirate / Re: X-FM 4095 AM from 4085 AM 0127 UTC 17 Feb 2019
« on: February 17, 2019, 0221 UTC »
0220 Very nice 30 dB signal. I have been hear from the start of the show. Thanks for the great show                           Redhat

0405 The signal is still holding up great hear. With " You can do magic - America
0412 Nice classic by Journey - Who's Crying Now

Other / Re: Classic Rock 7200 LSB 8 Feb 2019
« on: February 10, 2019, 0116 UTC »
Just like what happened on 14313 the biggest offenders will be ratted out on 7200 by other ham operators to the FCC. Then action will be taken. It is complaint driven.

I have some horrible interference* from leaky DSL phone lines on the pole or something close by, the AM DX is for the most part down in the raised noise floor.

I you run a phase canceling device like the MFJ 1025 with two antennas that hear both the noise and the station you will be able to cancel out the interference. I have been using one for years. Just a great device.

Pages: [1] 2 3 4 5 6 7