|
Current News
* Sony SRF-59 audio phasing
Sony has a nice small Walkman radio that works very well for DXing. Kevin Shanilec has found that connecting the audio outputs out of phase and setting
the radios about 90 degrees to each other works for audio phasing. This is a new approach that hasn't been seen before. He has made a .PDF file to
explain the process here.
Kevin has written a PDF of the Sony radio, some history and other useful info here.
28 January 2008
* WestList offline
The FCC has made some changes in their web site that has broken the automated WestList update routine. I haven't been able to work through it.
It's better to pull it offline than have outdated info. Sorry! I will keep working on it as time allows.
31 August 2007
* Antenna cable work and notes
I have been doing some work on cables for outdoor antennas, and the results have been a bit surprising. The article is here.
24 August 2007
* Large Ferrite Bar Antenna
I made a large ferrite bar antenna recently. A description and picture is here.
18 August 2007
* Truck receiver system
I've had a couple of inquiries on how my truck is set up for reception. There is a short article here.
12 August 2007
* Lightning-resistant antenna coupler
Here is a short article on how to make a lightning-resistant antenna coupler. This provides a complete isolation of the antenna coax from the
receiver while allowing RF to pass. The article is here.
23 May 2007
* Beyond HD Radio
Several comments about the HD Radio editorial challenged me to offer a viable alternative rather than just complain. My response is here.
17 May 2007
* Editorial on the recent approval of IBOC or HD Radio in the USA
Comments on HD Radio, now that it is about to be turned loose on the North American listening public shown here.
The original comments are updated with a further thought or two.
21 April 2007
* Alaska from the Lower 48, Season four
The work on hearing Alaska from the lower 48 states will continue for year four. The article can be found here.
23 March 2007
* JVC KD-HDR1 Receiver Review posted
A review of the JVC KD-HDR1 AM/FM/HD Radio is now in the Receivers section as an update to the KD-SHX900 review.
06 August 2006
* HD Radio Digital Power
A good technical article on HD Radio digital sideband power has been added to the IBOC section to the left. Thanks to Clear Channel VP of Engineering Steve Davis for allowing us to post this.
15 April 2006
* Loop antenna work
I'm working on a series of single-turn copper tube loops. So far, results have been very good. Nulling is as good as
a common wire multi-turn loop, but this doesn't need to be tuned. It's broadband from longwave up through the shortwave bands.
A pair of two foot versions have been mounted in the back of my truck at 90 degrees to each other for mobile work. It has been very effective, and picks up much less noise than a whip.
I have an article posted here including construction photos.
A recent modification was the addition of a second pickup on the top of the loop. When run into a phaser, it provides a virtual tilt and much deeper nulls.
The loop was inspired by a version used for VLF weather noise reception on the Stormwise site.
18 February 2006
|
