AmateurRadio.com

I have been thinking about this for sometime, after some Ham friends and others have said to me "Steve you have good ideas at times and find some excellent search's for us Amateurs why don't you write a blog? You have been feeding others with the information for years" True I have made some excellent friends like Roger G3XBM http://g3xbm-qrp.blogspot.co.uk/ via his great blogging exploits and  QRP projects, along with Hans PD0AC's radio antics http://hamgear.wordpress.com/ . I don't expect I will write things to the same high standard as these pair for a while, as I do not have the time at the moment, but I hope I will make some sort of valuable contribution to Amateur radio over the years..

A bit about myself, I have been licenced since 1984. I never went to a RAE course, I just read up a few books on the subject like the Radio Communications Handbook http://www.rsgbshop.org/acatalog/Online_Catalogue_Technical_6.html#a1426  armed with this info I walked into Cannock Chase technical college, and came out with 2 passes after nervously waiting for a few months for the results.. Not bad I thought? Of course I had been interested in radio since the mid 70s when I built crystal sets, and worked in the local television shop on a Friday after school and all day Saturdays. Along with the school radio club,  backstage lighting productions and the local drama club Rugeley players, I carried the knowledge forward and got some sort of career out of it and worked in the trade at Thorn EMI Automation's Test dept for 14 years or so..

Since 1984 my main Amateur interests have been largely around VHF/UHF and some 50MHz operation, using a Yaesu FT-736R. Nowadays it is small HF QRP projects (when I can find the time to construct).  Some may remember me from the AX25 Mailbox (GB7RUG) I ran for over 5 years,  I built it myself from converted ex CT2 units for the TNCs, and Pye PMR M & MX series radios for the radio ports, along with a 386 PC running DOS and FBB mailbox software on top of a G8BPQ node switch  package. It certainly was  full of fun and stress with 60 users at its peak, mail forwarding South to GB7COV via a 70cm link & North via a 4m link to GB7NOT. Fully operational 24/7 Serving Mid Staffordshire Radio Hams, it never failed once!  I retired the BBS at the end of 2001, I felt it had run its course with the Internet now in full steam..
Steve, G1KQH, is a regular contributor to AmateurRadio.com and writes from England. Contact him at [email protected].

At under $30 the Hendricks Kits DCxx series of direct conversion transceivers look good value. See http://www.qrpkits.com/. With a decent mixer, these rigs should do better than many. The image below is actually on the Hendricks Kits site. Link to image will be removed if this is a problem.

http://www.qrpkits.com/images/DXxxB5.jpg

Roger Lapthorn, G3XBM, is a regular contributor to AmateurRadio.com and writes from Cambridge, England.

As Murphy would have it, and in spite of the low amount of solar activity, LF/MF propagation has been very poor since getting my new 10' x 20' loop in place. The few front-to-side nulling checks that I have done, have produced results varying from around 20db to 30db, depending upon the signal. I suspect the depth of null is also affected by the signal's arrival angle but there is still more to learn. The pattern seems to be very close to that of a typical circular loop...the classic figure-8 pattern illustrated below as shown on the Wellbrook data that came with my ALA100LN preamp.

Courtesy: http://www.wellbrook.uk.com

More typically, the null is around 21-22 db as shown on this test while listening to the ground wave carrier of the YZA ndb (236kHz) located in Ashcroft, B.C., about 150 miles to the NE. As expected, the null is fairly sharp and the front / rear lobe, fairly broad.


One short check at dusk, produced nice signals from  CJBC, the French-language station in Toronto. The past few nights it has been very strong but with a strong echo effect. I wonder if there is more than one CBC outlet here (860kHz), such as a low-power repeater, causing the echo.


At the same time, while still fairly light outside, WCCO in Minneapolis had a nice signal just before sunset.


No matter how poor conditions become, it seems that the Hinchinbrook (Alaska) ndb, 'ALJ' (233kHz), is always strong....looping north.

Courtesy: https://www.google.ca/maps

My apologies for the video quality. If you know of any software available for making full-screen Perseus video captures so that I might improve my technique, please let me know. Presently I am just capturing them on my I-Pad which leaves a lot of room for improvement.

Hopefully conditions will only get better as the season progresses and I am able to give the loop a good workout....before it gets too windy!
Steve McDonald, VE7SL, is a regular contributor to AmateurRadio.com and writes from British Columbia, Canada. Contact him at [email protected].

With more digital radio appearing on the bands – I noticed the GB7BS (Bristol DMR) repeater coming on stream last weekend, you might want to think about ways of listening to the activity before you decide whether to take the plunge and invest in digital kit.

Over at the RTL-SDR blog, I noticed a post announcing a new version of the DSD+ software which will decode D-STAR, DMR etc. The package runs on Windows and you’ll need an RTL-SDR, Funcube Dongle or some other SDR receiver

See the post here

Tim Kirby, G4VXE, is a regular contributor to AmateurRadio.com and writes from Oxfordshire, England. Contact him at [email protected].

With more digital radio appearing on the bands – I noticed the GB7BS (Bristol DMR) repeater coming on stream last weekend, you might want to think about ways of listening to the activity before you decide whether to take the plunge and invest in digital kit.

Over at the RTL-SDR blog, I noticed a post announcing a new version of the DSD+ software which will decode D-STAR, DMR etc. The package runs on Windows and you’ll need an RTL-SDR, Funcube Dongle or some other SDR receiver

See the post here

Tim Kirby, G4VXE, is a regular contributor to AmateurRadio.com and writes from Oxfordshire, England. Contact him at [email protected].

I was pointed to this NASA video by Don K2DSV.  For those of you who are not sure, or perhaps were not even aware of, the difference between solar flares and coronal mass ejections:



72 de Larry W2LJ
QRP - When you care to send the very least!
Larry Makoski, W2LJ, is a regular contributor to AmateurRadio.com and writes from New Jersey, USA. Contact him at [email protected].