Showing posts with label Software defined radio. Show all posts
Showing posts with label Software defined radio. Show all posts

Monday, 23 January 2017

MW DX with 200 m Beverage: UNID transatlantic signal carrying US news on 1110 kHz





Hi there, another UNID signal that could be WBT from Charlotte, North Carolina (TX power 50 kW) or CBC Radio 1 from Deep River, Ontario. The latter would be a really excellent catch as their reported TX power is only 0.04 kW. Either way, this would have been another PF if an ID had been heard, but that goes with the territory! Recorded in Oxford UK on 10/10/16 at 02:00 hrs UTC using an Elad FDM DUO. Thanks for watching.

Saturday, 21 January 2017

MW DX with 200 metre Beverage: CKAC 730 kHz Montreal, Quebec, heard in Oxford, UK

Only the second time I'd copied CKAC, the first being an hour earlier on the same morning. Again, tricky to hear well because of adjacent QRM, but the Elad mostly deals with it very well in USB. Recorded on 10/10/16 at 02:57 hrs UTC using an ELAD FDM DUO. Thanks for watching.


Friday, 20 January 2017

MW DX with 200 m Beverage: WUNR Brookline, 1600 kHz, Newton, Massachusetts

Hi there, only the second time I've copied WUNR, so nice to catch them on the Beverage. A difficult signal to hear well due to severe adjacent channel QRM, but that's where the Elad and it's myriad of filtering options comes into it's own. Recorded in Oxford UK on 10/10/16 at 02:59 hrs UTC using an Elad FDM DUO. Thanks for watching.


Tuesday, 17 January 2017

Ready to start testing the Bonito Boni whip out in the field

Hi there, a short video to share my completed set up of the Boni whip out in the field. Sony ICF-SW55 clipped to the barbed wire fence. Reception videos to follow. Thanks for watching.


Saturday, 14 January 2017

Urban DX antenna test #3: Comparing 30 metre longwire to Boni whip

Hi there, the third reception video in this series of tests, comparing the Bonito Boni whip with a 30 metre longwire in an urban environment and then, as usual, a check on how the signal is heard with the Wellbrook ALA1530. In this example of the signal from Myanmar Radio 5985 kHz, there is no audio with either the longwire or Boni whip, only the ALA1530 manages to resolve some audio from their weak modulation. A LW and MW example to come, where, in one instance, the Boni whip prevails against the longwire. Conclusion: on SW, there is no advantage to the whip over a longwire, but no disadvantage either. Thanks for watching.

 

Urban DX antenna test #2: Comparing 30 metre longwire to Boni whip

Hi there, the second comparison video in this series, this time using the large signal from CRI on 6020 kHz. Again, there's little difference in SNR performance between the 30 metre longwire and Boni whip. More to come. Thanks for watching.

 

Friday, 13 January 2017

Medium wave DX: 1310 kHz - is this CIWW 1310 News, Ottawa, Ontario?

Hi there, this is presumed because no clear ID can be heard. Intially I thought this signal might be WLOB, but then I thought probably not and this was confirmed by Matthias as there is no mention of Fox News or their usual fanfare. With a TX power of 50 kW, CIWW is another likely candidate. If anyone can shed further light on this catch, I'd be very grateful. Recorded in Oxford UK, on 07/01/17 at 07:59 hrs using an Elad FDM DUO and Wellbrook loop (indoors). Thanks for watching.


Monday, 9 January 2017

Bonito Boni whip versus Wellbrook ALA1530: Test #1 winner: Wellbrook

Hi there, here is a signal from Medi 1 on LW 171 kHz with nice audio on the Wellbrook ALA1530. Watch as the Wellbrook is unplugged from the Elad FDM DUO and the Boni whip connected (using the supplied radiating element). The noise floor jumps by around 20 decibels and the resulting audio is severely compromised. I read that the Boni whip is often very ineffective in buildings, so I put both antennas in the garden to give it the best chance of success. The problem is however, that my garden is often noisier that inside the house because our neighbours surround us quite closely on three sides. Anyway, test number 1 is a disaster for the Boni whip. Let's see what happens next. Thanks for watching.