AmateurRadio.com

This weekend I finally snagged Nevada. Not one of the smallest states in the US, but certainly one that has been elusive to me since getting back into HF in 2013. I had worked a ham in Nevada earlier last year, but my multiple requests for LoTW or a paper card fell into the noise. But this weekend I worked a Nevada station that promised a paper card straight away.

This got me to thinking…with the magic list of DXCC most wanted, is there a WAS most wanted list? I worked every state and received quick confirmations in short order except for Delaware and Nevada. And watching the psk streams go by, I sure see a lot of people asking for NV, and DE. Of course, it depends on where you’re located.

Michael Brown, KG9DW, is a regular contributor to AmateurRadio.com and writes from Illinois, USA. Contact him at [email protected].

Like many others around the globe I spent yesterday attempting to receive and decode the SSTV transmissions being broadcast from the International Space Station by the Russian Cosmonauts.

The SSTV activity had been due to last three days starting on Saturday but commencement was delayed by the NASA space walk.

Receiving the signal and decoding is relatively straightforward due to relatively high power used (around 25W) however getting a perfect image is a challenge and dependant on a number of factors.

• The timing of the overhead pass. Due to the time taken to transmit the image and the three minute delay between each image it is possible to only be in reception range for the end of one image and the start of the next. 
• The ISS is moving quickly and so the transmission suffers noticeable Doppler shift. FM is more immune to the effect but for optimal performance adjustment of the tuned frequency is required especially on high elevation passes (more information).
• The ISS moves position, both in direction and elevation as it moves across the sky and will show up the peaks and troughs in a static antennas radiation pattern. This leads to bands of noise when the signal level falls. The use of a rotatable (and if possible tiltable) antenna (or even an handheld one) is the dirigour mode of operating satellites (and the ISS) for serious enthusiasts. 
• Noise and local interference will also obviously affect the image.

Mission Control

I opted a two pronged approach, the Yaesu FT857D connected to my rotatable four element YAGI which is mounted horizontally for SSB and the old TRIO/KENWOOD TR9000 was connected to the X50 dual-band collinear mounted vertically.


I had two copies of the MMSSTV program running on separate laptops The TR9000 was left running largely unattended tuned to 145.800MHz, while the FT857D was tweaked to the optimum frequency while the YAGI antenna was rotated to the correct azimuth during the pass.

All adjustments were done manually and I use the Orbitron program for prediction and under the Rotor/Radio tab the frequency and azimuth are shown and updated during the pass (as can be seen in the screen show below)


I missed the first low elevation at 11:07UTC, but was able to monitor and decode images on all the remaining passes during the day, with some excellent results, the images show the full images decodes on both radio set ups as a comparison.

FT857D - Yagi

TR9000 - Collinear

FT857D - Yagi

TR9000 - Collinear

FT857D - Yagi

TR9000 - Collinear

FT857D - Yagi

TR9000 - Collinear

FT857D - Yagi

TR9000 - Collinear

I was especially pleased when one of my best images was featured on the Amsat-UK and the Southgate Amateur Radio News websites.

What was slightly worrying and it also happened during the last SSTV activities were some operators transmitting on the downlink frequency even during a pass, what sounded like someone keying up was responsible for the single noise line on another perfect image. I even received an unexpected SSTV image, complete with a call sign while the system was waiting for the next pass. I won't publish it here as everyone makes mistakes.

The experiments are continuing today but I am in work so will just leave an automated set up running on the collinear.

Judging by the messages on social media these SSTV activities seem to have captured the imagination of a lot of operators and several members of my local club South Kesteven Amateur Radio Society (SKARS) had their first go with some excellent results and are hooked! The images can seen on the SKARS Facebook page

Long may the activities continue, hopefully started to transmit some live images from space.
Andrew Garratt, MØNRD, is a regular contributor to AmateurRadio.com and writes from East Midlands, England. Contact him at [email protected].

Oliver is asking……"Ahhhh dinner!!!

I took part in the ARRL CW contest this weekend in a part time way, I was not able to go full tilt as I had things around the house that needed to be done. I skipped the Friday evening as it's most of the big guns going at record setting CW speeds. I operated QRP, single band, non assisted, single transmuter and with my MFJ 1788 magnetic loop antenna. The bands were alive with CW and you would never think we were in the downswing of a solar cycle! Then conditions over all were great on 15m I was able to get on from early morning into the early evening. In the morning the bands were filled with

The rig setup

Europe and as the late afternoon rolled around the South Pacific started to boom in along with Central and south America. Some of the standout locations I heard were Bangladesh, Guam, Japan, New Zealand and South Sudan. None of which I was able to contact the pileups were HUGE!! Some of the highlights for me were contacting Hawaii, Cuba,  and grabbing a new DXCC Dominican Republic.
Score rundown is as follows
Contacts        DXCC's      Points
81                   39                9360

The equipment  used was the Elecraft K3 with 500,400 and 250 inrad filters, the Elecraft P3, Begali Contour Key and the Flex control external VFO knob and last but not least the MFJ 1788 Magnetic loop antenna. The software used were N1MM+ contest software, N4PY rig control software and MRP40 CW code reader for the chain saw speed code. I never had Murphy pay me any visits during

The contest software

the contest which really is a first time. I found 15m to be a great band very low noise floor and lots of action. I did venture up to 20m for a listen and from my location it was very noisy and I was glad I decided to stick with 15m.  Sunday seemed to be an easier day for making contacts I had far less repeats to do, Saturday I really had to work for each and every contact. Looking forward to the next CW contest!


Mike Weir, VE9KK, is a regular contributor to AmateurRadio.com and writes from New Brunswick, Canada. Contact him at [email protected].

40m Pixie kit

Pixie kit – being built

After carefully unpacking this kit today I checked all the parts were there and measured all values for correctness. The kit was very well packed and everything was there. Even at the price I paid ($10 with shipping by air included) it represents very good value.

The kit comes with a nice silk screened and well labelled PCB, crystal, all parts, schematic and a parts list. It would be hard to buy the bits for the price I paid. G1KQH paid even less!

I now realise that for close-up work I need better glasses!  Fortunately I have a small assembly aid that includes a magnifying glass. I am taking the build slowly and it is quite exhausting for me.  However, the actual assembly is going well. Last year, for me, this would have been impossible. I can still solder – big steps, HI.

Although the Pixie will be tested on the air, the important personal test is the building. It proves that, with some effort on my part, the world of experimental amateur radio is still there for me. You have no idea what this small step means to me.

Before too long I want to get out in the countryside and try again with my VLF and optical tests. It has been a long long long time.

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

Randomly, I was browsing through Facebook this morning and I noticed Paul G4RRA say that he was about to drive up to the site for the RSGB 70MHz cumulatives.

Although I only have the vertical available for 70MHz, I wondered what if anything I would be able to hear. Of course, having the Noble NR4SC readily available means that there is no fiddling around connecting up transverters. Which, on a sleepy Sunday morning might have been enough to to deter activity!

The SSTV activity from the ISS generates a huge amount of interest. I noticed some of the RTL-SDR groups on Facebook having a lot of fun decoding the pictures. Good publicity for the hobby!

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

Randomly, I was browsing through Facebook this morning and I noticed Paul G4RRA say that he was about to drive up to the site for the RSGB 70MHz cumulatives.

Although I only have the vertical available for 70MHz, I wondered what if anything I would be able to hear. Of course, having the Noble NR4SC readily available means that there is no fiddling around connecting up transverters. Which, on a sleepy Sunday morning might have been enough to to deter activity!

The SSTV activity from the ISS generates a huge amount of interest. I noticed some of the RTL-SDR groups on Facebook having a lot of fun decoding the pictures. Good publicity for the hobby!

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

Series Eight Episode Four of the ICQ Amateur / Ham Radio Podcast has been released. In this episode Martin M1MRB / W9ICQ is joined by Ed Durrant DD5LP and Martin Rothwell M0SGL to discuss the latest Amateur / Ham Radio news. Colin M6BOY rounds up the news in brief, and this episodes feature Q and A and Repair Tips.

 

• Essex 2m Activity Day March 2015
• Rotary Celebrates its 110th birthday
• Cansat - Rocket Launched Instruments in a 330ml Can
• New Open Source Data Mode FSQ
• D-STAR, DMR and C4FM Repeater Maps
• WG2XPN 70 MHz Beacon update
• Amateur Radio Based Group Rescues Released Broadcast Frequency
• Indoor Marijuana Growers caught due to radio interference
• Radio Astronomy and SDR Dongles

Colin Butler, M6BOY, is the host of the ICQ Podcast, a weekly radio show about Amateur Radio. Contact him at [email protected].