76
Part 15 AM and FM Station Operation / Re: Part 15 AM and FM
« on: May 02, 2020, 1915 UTC »
What is "pretty good" distance?
Shortwave Pirate Radio In North America And Around The World, And Other Signals That Go Bump In The Night
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.
With a dipole at about 20', my Ramsey FM-25A with no jumper in place has a usable range in excess of 1200' measured on my car radio driving around the 'hood. This level of transmitters costs about $100 at most.
Just wondering why the effort to go AM with all the attending problems with hum and antennas, when an inexpensive Part 15 compliant FM transmitter is easier to implement for equivalent coverage. Besides, a TH AM transmitter already exists and costs less than $250.
For $120, you can get a Part 15 compliant USB stereo FM transmitter with RDS.
The assertion and reasoning for the product development (from the Radio World article) that the RF limit for Part 15 AM is much greater than for FM doesn't translate to better coverage.
Not convinced a church would be willing to dig up the yard and parking lot to accommodate the radial field needed to make this AM transmitter cover even a modest area with a clean signal.
0350 - Spanish programming - S6
0400 - TOH ID music - English, two IDs then carrier cut off.
0408 - Popped back on with what sounded like national anthem, then English ID, propaganda/news with lots of echo
0410 - S9 on vertical.
0425 - Good condx - getting them on 15180, 13760 and 11735, all about same signal at one point or another.
Also at only about S3 with the French programming on 15105 and 13650
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77
Part 15 AM and FM Station Operation / Re: Introducing Parking Lot Radio!
« on: May 01, 2020, 2226 UTC »
For $300 I want a device that has a proper 120VAC IEC power cord connector, and a good linear power supply internal, not some cheesy 15vdc switching wall wart. Not like at Part 15 output levels they are spending a lot on the RF section. And it has crap for inputs and no other features at all other than price.
This is a way better buy for church radio, IMO, and les than half the price right now at $179 [size=78%]https://rolls.com/product/HR70[/size]
This is a way better buy for church radio, IMO, and les than half the price right now at $179 [size=78%]https://rolls.com/product/HR70[/size]
78
Part 15 AM and FM Station Operation / Re: Introducing Parking Lot Radio!
« on: May 01, 2020, 1407 UTC »With a dipole at about 20', my Ramsey FM-25A with no jumper in place has a usable range in excess of 1200' measured on my car radio driving around the 'hood. This level of transmitters costs about $100 at most.
Just wondering why the effort to go AM with all the attending problems with hum and antennas, when an inexpensive Part 15 compliant FM transmitter is easier to implement for equivalent coverage. Besides, a TH AM transmitter already exists and costs less than $250.
For $120, you can get a Part 15 compliant USB stereo FM transmitter with RDS.
The assertion and reasoning for the product development (from the Radio World article) that the RF limit for Part 15 AM is much greater than for FM doesn't translate to better coverage.
Not convinced a church would be willing to dig up the yard and parking lot to accommodate the radial field needed to make this AM transmitter cover even a modest area with a clean signal.
79
Part 15 AM and FM Station Operation / Re: Part #15 gear out there.
« on: April 30, 2020, 1655 UTC »
Rooting around in the attic and found my box of BA-1404 experimentation from 1991.
82
Shortwave Broadcast / Re: SOH Xi Wang Zhi Sheng 6870 AM 1325 UTC Apr 25 2020
« on: April 26, 2020, 1439 UTC »
Thanks for the pointer. I listened again this morning, found the same station on 10820kHz much stronger, and at the same time pulled that frequency up on the Hong Kong Kiwi SDR, and listened to both Kiwi and my radio. Sure enough strong station there, but at TOH it signed off and then there was a much weaker signal still there, while I could hear nothing on my radio. Checked back to 6870 and same weaker station there.
The weaker station, though, seemed awfully weak for being only 500 miles away at 1kw at night.
Need to brush up on Chinese...
https://www.dropbox.com/sh/946dxj9obq6iiau/AAA0fhz3g0Em5BnJldzrhslOa?dl=0 Top of the hour on 10820kHz
The weaker station, though, seemed awfully weak for being only 500 miles away at 1kw at night.
Need to brush up on Chinese...
https://www.dropbox.com/sh/946dxj9obq6iiau/AAA0fhz3g0Em5BnJldzrhslOa?dl=0 Top of the hour on 10820kHz
83
Shortwave Broadcast / Re: SOH Xi Wang Zhi Sheng 6870 AM 1325 UTC Apr 25 2020
« on: April 25, 2020, 2333 UTC »
Check it for yourself. It was music, no jammy sound.
Not besmirching your obvious majestic qualifications, but Occam's Razor applies here. Signal heard. In Cantonese (as far as my white ass can decihper Cantonese). On frequency. How important are you or your precise observations?
Point here is I observe something and maybe you validate it? Am I not able to post unless there is a QSL card return in the box?
Otherwise the forum devolves into some thing where I assert reception and it is non negotiable from there.
Not besmirching your obvious majestic qualifications, but Occam's Razor applies here. Signal heard. In Cantonese (as far as my white ass can decihper Cantonese). On frequency. How important are you or your precise observations?
Point here is I observe something and maybe you validate it? Am I not able to post unless there is a QSL card return in the box?
Otherwise the forum devolves into some thing where I assert reception and it is non negotiable from there.
84
Shortwave Broadcast / SOH Xi Wang Zhi Sheng 6870 AM 1325 UTC Apr 25 2020
« on: April 25, 2020, 1327 UTC »
1325 - S5 - weak audio. Band is quiet. Not bad for 1kW station.
85
Shortwave Broadcast / Radio Verdad 4055 AM 0528 UTC Apr 25 2020
« on: April 25, 2020, 0529 UTC »
0528 - S7, noisy, hymns
0528 - preacher in English
0528 - preacher in English
86
Shortwave Broadcast / XEPPM 6185 AM 0522 UTC Apr 25 2020
« on: April 25, 2020, 0525 UTC »
0522 - S9 - music - verified with XEEP stream.
87
Other / UNID 6248 LSB 0450 UTC Apr 25 2020
« on: April 25, 2020, 0459 UTC »
0450 - S3 - S6 - two or three stations calling, "Armario, armario, cambio", "Comandancia, comandancia, cambio" intermittently a minute or so apart.
88
Shortwave Broadcast / RNZ 13840 AM 0402 UTC 25 Apr 2020
« on: April 25, 2020, 0404 UTC »
0402 - S9 on magloop - Continuing with the music show.
Started listening on this frequency early this evening. Left it on and been listening on and off all night. Good shows.
Started listening on this frequency early this evening. Left it on and been listening on and off all night. Good shows.
89
Shortwave Broadcast / Voice Of Korea 15180 AM 0350z 25 Apr 2020
« on: April 25, 2020, 0401 UTC »0350 - Spanish programming - S6
0400 - TOH ID music - English, two IDs then carrier cut off.
0408 - Popped back on with what sounded like national anthem, then English ID, propaganda/news with lots of echo
0410 - S9 on vertical.
0425 - Good condx - getting them on 15180, 13760 and 11735, all about same signal at one point or another.
Also at only about S3 with the French programming on 15105 and 13650
90
Part 15 AM and FM Station Operation / Re: Part 15 AM and FM
« on: April 23, 2020, 0103 UTC »
Took the Orban offline and now trying StereoTool free for the FM and stream. Amazing. http://s2.free-shoutcast.com:18594/
