Podcasting since 2005! Listen to Latest SolderSmoke

Thursday, February 18, 2010

HOMEBREW HERO: Arnie Coro, CO2KK

I was getting ready to write a quick blog entry on Arnie Coro's latest contribution to ham radio (his idea to revive the old 40 meter novice band) when it occurred to me that Arnie's long track record of providing good ideas, technical advice, and inspiration definitely puts him in the HOMEBREW HERO category. Thanks Arnie!

Below you can find the transcript of Arnie's latest edition of Radio Habana Cuba's "DXers Unlimited." There is a good discussion of current solar conditions (improving!) and of Arnie's 40 meter CW initiative.

Arnie's work at RHC is archived and available on the net. It is a real Caribbean treasure trove for us: http://www.dxers-unlimited.dxer.info/

Here is Arnie's blog: http://dxersunlimited.blogspot.com/

From "DXers Unlimited" 16-17 Feb 2010:
Hi amigos radioaficionados around the world now enjoying the ongoing
upsurge in solar activity that has brought to us DX signals as
strong as we had not heard them since 2005 !!! Yes my friends,
finally, after waiting, and waiting, and waiting, we are seeing a
nice comeback of the sunspots... As a matter of fact, only two days
of 2010 had gone by with a totally blank Sun. The all important R
number from the very much respected Catania, Sicily reference solar
observatory was 39 yesterday... and two other sunspot groups are
just about to turn into view...
As a result of the sustained increase in sunspot count, we are
seeing the 15 meters or 21 megaHertz amateur band opening up every
day... I will tell you more about amateur radio Dxing later , here
at th emid week edition of Dxers Unlimited... The daily solar flux
is very near 90, and forecasters were looking at a lower flux during
the next three days, but this may change dramatically and in just a
few hours, if the new solar sunspots regions that are rotating into
Earth's view show high activity.
Item two: The amateur radio hobby is alive and in good health... ham
radio
operators are enjoying the hobby and finding new ways of
improving their communications skills... Here is a recent example,
by carefully studying the behavior of activity on the 40 meters
band, I was able to find out that the band
segment from 7105 to 7125 kiloHertz was seeing very little use here
in ITU Region II, that is the Americas. So I launched the idea to
start using that segment by low power stations, on several of the
popular ham radio Internet mailing lists. In just a couple days , CW
activity , mostly by low power or qRP stations on that segment
roughly 20 kiloHertz segment has increased dramatically... For many
operators, finding such a nice and clear , interference free
segment, has meant having the opportunity of making many more two
way contacts.... and not only exchanging reports, but also , thanks
to less interference, we have carried out some really nice ragchews,
and just notice that I have just said WE, because I am , of course,
one of the happy radio amateurs operating on CW between 7105 and
7125 kiloHertz.
There are no digital stations using that segment... as they are now
present between 7030 and 7040 kiloHertz, the two frequencies were
QRP , or low power operators, are used to gather, and where for the
past year or so, it has become extremely difficult at times to make
even a single two way CW contact.
I am not saying that QRP operators should abandon the two favorite
watering holes, 7030 and 7040, what I have told the QRP , GLOWBUGS
and Regenerative receivers Internet list members, is that the
segment between 7105 and 7125 is in a much better shape regarding
QRM... yes there is a let less interference from other
communications modes...so chances to make nice contacts increase in
a very significant way.
Si amigos , Yes my friends , Oui mes amis...amateur radio operators
around the world are now enjoying the upsurge in solar activity, and
with it, we all must look around the bands and find ways to make
better use of them... After all, many other users of the radio
spectrum are always monitoring the ham bands, just to have data
available to substantiate their requests for more spectrum space....
In other words, if we, amateur radio operators are able to be more
time on the air, and the bands sound like a beehive of activity,
chances that those spectrum hungry users will just go elsewhere !!!

The complete script of the program , devoted to the promotion and
development of our radio hobby in general and amateur radio in
particular, can be read at:
http://dxersunlimited.blogspot.com
later this Tuesday, after the program goes on the air

Comments , suggestions and ideas on how to help promote
amateur radio are welcome at my e-mail address
inforhc at enet dot cu

72 and DX
Arnie Coro
CO2KK

Wednesday, February 17, 2010

Embedded Systems Video

Frank, VK2AKG, sent us this interesting video about the development of what we today call embedded systems.
http://www.ganssle.com/misc/esc2008.mov

Monday, February 15, 2010

More Workbench Eye Candy

I blame Rogier for the title of this post. He saw yesterday's workshop pictures and declared them to be porn-like. We all know what he means. Gil sent me this link with more workshop shots: http://www.crystalradio.net/bench/index.shtml
I really like the one above. It is from Catalonia in Spain. It belongs to Josep Busquets Vinas.
One question about yesterday's slide show: Where's the WD-40?

An AMAZING Workshop

You guys have to take a look at this slide show:
http://www.flickr.com/photos/mtneer_man/sets/72157594474602738/show/

About the owner:

I'm a geo-physicist by degree, a design development engineer by trade and a mountaineer by choice...
I live in very, very rural Oklahoma and worked for a Norwegian company. And a Chicago company... and a Salt Lake company... And now... well, I just do work for whowever I feel like dealing with.
and I climb mountains, mainly in the western hemisphere. Occasionally, I go to Patagonia in South America to climb.
I like my ATV rides out in the country to photograph things... all over western Oklahoma roads. Dirt roads only., thanks...
I do "projects"; around our place, building things and creating mechanical devices. So a lot of my photos revolve around my workshops (I have 4) and the things I build... + our cats.
Whatever..... I'm having fun.

http://www.flickr.com/photos/mtneer_man/sets/72157594474602738/show/

Saturday, February 13, 2010

Weekend Sale 15% off on SolderSmoke --The Book

Lulu is running a sale through Monday. 15% off on all books.
Just use the code word WASHINGTON when asked for a coupon.
Click here: SolderSmoke - A Global Adventure in Radio Electronics

Why the 30 Meter Pipeline to Norway?

As do many WSPR addicts, I now start my radio day with a visit to the WSPR database. I feel a real NEED to see who received my 20 mW signals as I slept. As described in a post below, this week I've been greeted with a long table showing one station, and ONLY one station -- LA3JJ -- was picking me up. This morning's readout (below) was even more surprising than the earlier ones, because last night Jon was picking up almost ALL of my WSPR transmissions: The chart shows him receiving signals at 2 minute intervals. I know that conditions are improving, but isn't this kind of unusual?
Another sign that conditions are improving: That little blue line arcing to the West. As I was writing this, W1XP copied my sigs at 0452 UTC. Isn't WSPR fun?! You can get a better sense of the possibilities here by playing with the database info and the map. Plug in my call (I0/N2CQR) and you can watch (almost live) who is hearing me:
http://wsprnet.org/drupal/wsprnet/spots

TimestampCallMHzSNRDriftGridPwrReporterRGridkmaz

2010-02-13 05:02 I0/N2CQR 10.140153 -24 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 04:58 I0/N2CQR 10.140154 -27 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 04:54 I0/N2CQR 10.140154 -19 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 04:52 I0/N2CQR 10.140154 -23 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 04:52 I0/N2CQR 10.140152 -25 0 JN61fv 0.02 W1XP FM14di 7558 297
2010-02-13 04:50 I0/N2CQR 10.140153 -25 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 04:46 I0/N2CQR 10.140155 -21 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 04:44 I0/N2CQR 10.140155 -22 -1 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 04:42 I0/N2CQR 10.140151 -27 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 04:40 I0/N2CQR 10.140155 -22 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 04:36 I0/N2CQR 10.140155 -24 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 04:34 I0/N2CQR 10.140155 -22 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 04:32 I0/N2CQR 10.140156 -24 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 04:30 I0/N2CQR 10.140156 -21 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 04:28 I0/N2CQR 10.140155 -22 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 04:24 I0/N2CQR 10.140155 -20 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 04:22 I0/N2CQR 10.140155 -19 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 04:20 I0/N2CQR 10.140155 -23 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 04:16 I0/N2CQR 10.140155 -19 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 04:14 I0/N2CQR 10.140155 -22 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 04:12 I0/N2CQR 10.140155 -24 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 04:04 I0/N2CQR 10.140157 -30 -1 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 04:00 I0/N2CQR 10.140155 -24 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 03:58 I0/N2CQR 10.140155 -24 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 03:54 I0/N2CQR 10.140154 -22 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 03:52 I0/N2CQR 10.140154 -26 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 03:50 I0/N2CQR 10.140153 -26 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 03:46 I0/N2CQR 10.140154 -24 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 03:42 I0/N2CQR 10.140154 -24 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 03:40 I0/N2CQR 10.140154 -22 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 03:38 I0/N2CQR 10.140154 -22 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 03:34 I0/N2CQR 10.140153 -22 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 03:32 I0/N2CQR 10.140154 -25 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 03:30 I0/N2CQR 10.140153 -26 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 03:28 I0/N2CQR 10.140153 -24 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 03:24 I0/N2CQR 10.140153 -23 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 03:22 I0/N2CQR 10.140153 -29 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 03:20 I0/N2CQR 10.140153 -24 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 03:18 I0/N2CQR 10.140153 -21 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 03:16 I0/N2CQR 10.140153 -25 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 03:12 I0/N2CQR 10.140153 -24 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 03:10 I0/N2CQR 10.140153 -23 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 03:08 I0/N2CQR 10.140152 -23 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 03:06 I0/N2CQR 10.140152 -22 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 03:02 I0/N2CQR 10.140155 -23 -1 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 03:00 I0/N2CQR 10.140153 -22 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 02:58 I0/N2CQR 10.140153 -19 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 02:56 I0/N2CQR 10.140153 -26 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 02:48 I0/N2CQR 10.140153 -24 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 02:46 I0/N2CQR 10.140154 -22 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 02:44 I0/N2CQR 10.140154 -27 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 02:42 I0/N2CQR 10.140154 -25 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 02:30 I0/N2CQR 10.140153 -27 -1 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 02:28 I0/N2CQR 10.140154 -21 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 02:26 I0/N2CQR 10.140154 -26 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 02:24 I0/N2CQR 10.140153 -25 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 02:18 I0/N2CQR 10.140153 -26 -1 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 02:16 I0/N2CQR 10.140154 -25 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 02:14 I0/N2CQR 10.140153 -23 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 02:10 I0/N2CQR 10.140153 -27 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 02:08 I0/N2CQR 10.140153 -19 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 02:06 I0/N2CQR 10.140153 -23 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 02:04 I0/N2CQR 10.140153 -21 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 01:54 I0/N2CQR 10.140152 -27 1 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 01:50 I0/N2CQR 10.140152 -25 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 01:48 I0/N2CQR 10.140153 -20 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 01:46 I0/N2CQR 10.140153 -16 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 01:44 I0/N2CQR 10.140153 -15 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 01:42 I0/N2CQR 10.140152 -22 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 01:38 I0/N2CQR 10.140152 -26 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 01:36 I0/N2CQR 10.140152 -26 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 01:34 I0/N2CQR 10.140152 -23 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 01:30 I0/N2CQR 10.140152 -23 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 01:28 I0/N2CQR 10.140152 -22 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 01:26 I0/N2CQR 10.140153 -24 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 01:24 I0/N2CQR 10.140153 -21 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 01:22 I0/N2CQR 10.140153 -25 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 01:18 I0/N2CQR 10.140152 -24 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 01:16 I0/N2CQR 10.140153 -25 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 01:14 I0/N2CQR 10.140154 -23 -1 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 01:12 I0/N2CQR 10.140154 -23 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 01:10 I0/N2CQR 10.140153 -24 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 01:06 I0/N2CQR 10.140153 -27 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 01:04 I0/N2CQR 10.140153 -22 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 00:58 I0/N2CQR 10.140152 -25 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 00:56 I0/N2CQR 10.140152 -23 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 00:54 I0/N2CQR 10.140152 -24 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 00:52 I0/N2CQR 10.140152 -25 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 00:48 I0/N2CQR 10.140152 -28 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 00:46 I0/N2CQR 10.140153 -27 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 00:36 I0/N2CQR 10.140153 -22 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 00:34 I0/N2CQR 10.140153 -17 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-13 00:08 I0/N2CQR 10.140260 -31 0 JN61fv 0.02 LA3JJ JO59bh 1943 356
2010-02-12 23:44 I0/N2CQR 10.140152 -20 0 JN61fv 0.02 LA3JJ JO59bh 1943 356

Friday, February 12, 2010

QR2S: A New Kit for 30 Meter QRSS

Preannouncement
QR2S by Genesis, design: Bat Masterson YU1OL
QR2S is 30m band QRSS transceiver. It consist of high dynamic single conversion
receiver with switchable HD RF preamplifier and crystal bandpass filter of 450 Hz,
demodulator with I/Q output. Transmitter comes with oven controlled xtal oscillator (OCXO), tunable center frequency and microcontoller- adjustable power output in range of 1.2 mW - 1.5 W. Operating mode: CW (variable dot), DFCW and 'graphic' mode.QRQ CW ID. PC controlled via uC (osc temp adjustment, power out, cent freq, modulation) After initial setting with provided application, QR2S is stand-alone RX/TX unit. QR2S is through-hole/ SMT hybrid kit. Component count 350+
Price estimate/target: US$ 149 plus $18 air mail delivery worldwide.
Kit status: PCBs and majority of components are in stock, beta test OK.
Estimated release date: end of March 2010.
Pre-orders welcome! If you wish to reserve your QR2S (no payment required yet!)
please email info@GenesisRadio. com.au By registrating your interest in this project you will help us estimate number of kits for the first production run.
Physically, QR2S PCB is just a touch smaller than G3020.
This time we went for blue color soldermask.
You will also notice significant improvement in component layout/silk- screen print!
And for the first time our board has bottom silk screen as well :-)
Bat Masterson is seasoned PCB designer and I am extremely pleased to have him on Genesis team!
Of course, once more units are build and tested in coming weeks, our web page will be updated with photos, screenshots and assembly manual.
I believe Genesis QR2S is the first QRSS-dedicated transceiver and I hope it will provide great platform for everyone interested in homebrewing, experimenting, QRSS mode or just kit building.
As always, thank you for your patronage.

73, Nick VK1AA
--------------------------------------------------
GenesisRadio
4th Floor, Suite 403
Culwulla Chambers
67 Castlereagh St.
Sydney 2000 NSW
AUSTRALIA
Phone: 02 9232 0500
Fax: 02 9233 2273
www.GenesisRadio.com.au
--------------------------------------------------



Designer: Douglas Bowman | Dimodifikasi oleh Abdul Munir Original Posting Rounders 3 Column