Messages

91

Shortwave Broadcast / Radio Havana? 6100 kHz 0416 UTC 04 Feb 2021

« on: February 04, 2021, 0418 UTC »

short-wave.info and DX Toolbox show this as KCBS Pyongyang, but definitely spanish.  Very strong too....S7ish.  Music, maybe news? 

Yup, station ID at 0433 UTC.  Radio Havana Cuba....

92

General Radio Discussion / check 486kHz!

« on: December 25, 2020, 1613 UTC »

Think i could see the carrier last night, but i've got a lot of QRM around there so can't be sure.  Wasn't able to make out any audio.

http://www.arrl.org/news/virginia-radio-amateur-will-commemorate-1906-fessenden-christmas-eve-broadcast

93

General Radio Discussion / ELoran RFI

« on: September 07, 2020, 1401 UTC »

Interesting discussion about RFI from a reactivated LORAN site in NJ....

https://forums.radioreference.com/threads/am-radio-interference-cape-may.411689/

94

General Radio Discussion / Different kind of pirate...

« on: July 18, 2020, 0037 UTC »

From the files of “WTF?!”

https://qrznow.com/unauthorized-transmissions-in-144-mhz-satellite-allocation/

95

General Radio Discussion / Re: Russian Kerosene Powered Radio

« on: July 09, 2020, 1408 UTC »

1000 roentgens per hour never hurt no one.

At least not for long....

96

General Radio Discussion / Re: Russian Kerosene Powered Radio

« on: July 07, 2020, 2108 UTC »

Start collecting those smoke detectors....

97

General Radio Discussion / Re: Russian Kerosene Powered Radio

« on: July 07, 2020, 1220 UTC »

Kerosene?  Bah!  In modern Russia the mighty atom powers all! 

Maybe these folks were just looking for a new radio 'battery'...
https://bellona.org/news/nuclear-issues/radioactive-waste-and-spent-nuclear-fuel/2003-11-two-strontium-powered-lighthouses-vandalised-on-the-kola-peninsula

98

Equipment / Re: Garbage Baluns

« on: July 06, 2020, 2339 UTC »

That's my ~ 40' diameter loop on ground.  Using a squid balun since my little chinese 1:9 was flooded out

Note that's the SWR reading where my feedline comes into the house, so that's the antenna plus a whole bunch of buried RG-6/U.

99

Equipment / Re: Garbage Baluns

« on: July 06, 2020, 1901 UTC »

Sooo...would this be an OK result for a broadband HF receive only antenna (at least above 1.4MHz or so)?  Note the scale....looks like the SWR is 1.2-2.0 above 1.4MHz.  The max SWR is ~8 on about 800kHz.

100

Equipment / Re: I like that you can adjust the fun level on this one

« on: July 05, 2020, 1241 UTC »

And it has a big horn!

Too bad it’s just for elders....

101

Equipment / Re: Antenna projects that were not successful

« on: June 27, 2020, 1626 UTC »

Well, my first attempt at a VHF/UHF diplexer didn’t turn out too well.  The calculations and simulation was for a crossover freq of 500 MHz.  As you can see, that didn’t happen!  I think the inductors I wound were the issue, so will give it another shot.

102

The RF Workbench / Re: dumb soldering question of the day

« on: June 23, 2020, 1510 UTC »

Thanks!  Now that I've got a VNA i'm putting a toe into the 'brew your own RF filter' water.  On the plus side...i've gotten good with some of the simulation software, and the filter i cobbled together works after a fashion.  On the minus side....the simulations and real life frequency cutoffs are very different, i suspect due to my half-ass attempt at making coils.  Still...progress!

103

The RF Workbench / dumb soldering question of the day

« on: June 22, 2020, 1958 UTC »

Any tips on soldering female F-connectors, esp. to the body?  I'm spitballing a RF filter circuit before i start cutting on my last mint tin.....

104

SDR - Software Defined Radio / Re: RPi Ethernet question

« on: June 21, 2020, 2150 UTC »

Finally got it to work.  After messing around with static IPs, etc. just had to set relative priorities for WiFi and ethernet and let DHCP do its thing.

Now...if i can get the rtsp/rtp stream into icecast2...... 

105

Shortwave Broadcast / Re: BBC Mid Winter Antarctic Broadcast 5790/7360/9580 am 2130 utc 21 June 2020

« on: June 21, 2020, 2146 UTC »

5790 AM:  can see carrier but no audio.
6170 AM: nothing observed.
7360 AM:  noisy, strongest reception (2-4 dBm). 
9580 AM, weak mostly <1.5dBm.