A visit to Telford Hamfest & the GQRP club

My amateur radio activity has been very much on the back burner during the last few months due to other commitments.

However, rather than cut the lawns, wash the car on a Sunday morning and look forward to a roast beef lunch, sandwiches were a better offering this last weekend. I had arranged to go to the Telford radio rally and maybe pickup a few items. Don't bring back any junk, said my wife! Ugh!



                                        So it was time to get up early dig out the badge.


The Telford radio rally had always been hosted in the centre of Telford town centre for many years, but about 10 years ago it was moved to the Enguity Centre at Coalbrookedale  museum, in the centre of Shropshire where the industrial revolution started.





We arrived quite early and people were certainly up with the larks to get a place in the queue, and maybe grab a bargain? 



This year the rally had teamed up with the GQRP club which had moved it's famous annual QRP convention from Rishworth. Most of the team were there, including George (G3RJV) and Graham (G3MFJ). Bringing along their wealth of experience with the rest of the crew from the hub of the club, giving members free advice, sales, and trying to recruit a few new ones to the fold:



Sadly my snap of the club stand came out blurred and I don't have another replacement, much to my disappointment! If anyone has a photo, please send me a copy and I will edit it in..

However I did purchase the mug to prove my support for the GQRP club.

If you didn't visit the convention you can always join the GQRP club, at £6 for a year's UK membership and not much more for international, it is really an amazing bargain! Including 4 Sprats  (the quarterly magazine of the club) posted to your home! Sprat is packed with designs, QRP circuits, membership news etc. Edited by George Dobbs since the formation of the club in 1974. How can many say they have done a job like that for over 40 years, again amazing!


                                                            Join the GQRP club here.








 
The RSGB had also popped along to offer their helpful sales team with some exciting new publications to read.










Even though I didn't buy much this year it proved to be a very good social event, meeting up with quite a few other Amateurs who share the same interest which I know from around the country.We all picked up a few ideas, hints and tips, and learning news which we wouldn't of heard of online.





The rally was well supported by an excellent showing of folk, quite a few good traders had also showed up for the event. But, I can't help feeling that the Internet has taken over many aspects of the supply of components for our hobby, which are now available very quick and cheap from our friends in the far East.




It was time to have a look outside at a few traders that had setup shop, and grab a cuppa before returning back home late afternoon.




Maybe see you there next year, or you never know where I am going to pop up next!








Steve, G1KQH, is a regular contributor to AmateurRadio.com and writes from England. Contact him at [email protected].

A visit to the Telford Hamfest & GQRP club

My amateur radio activity has been very much on the back burner during the last few months due to other commitments.

However, rather than cut the lawns, wash the car on a Sunday morning and look forward to a roast beef lunch, sandwiches were a better offering this last weekend. I had arranged to go to the Telford radio rally and maybe pickup a few items. Don't bring back any junk, said my wife! Ugh!



                                        So it was time to get up early dig out the badge.


The Telford radio rally had always been hosted in the centre of Telford town centre for many years, but about 10 years ago it was moved to the Enguity Centre at Coalbrookedale  museum, in the centre of Shropshire where the industrial revolution started.





We arrived quite early and people were certainly up with the larks to get a place in the queue, and maybe grab a bargain? 



This year the rally had teamed up with the GQRP club which had moved it's famous annual QRP convention from Rishworth. Most of the team were there, including George (G3RJV) and Graham (G3MFJ). Bringing along their wealth of experience with the rest of the crew from the hub of club, giving members free advice, sales, and trying to recruit a few new ones to the fold:






Sadly my snap of the club stand came out blurred and I don't have another, much to my disappointment! If anyone has a photo, please send me a copy and I will edit it in..

However I did purchase the  mug to prove my support for the G-QRP club.

If you didn't visit the convention you can always join the G-QRP club, at £6 for a year's UK membership and not much more for international, it is really an amazing bargain! Including 4 Sprats  (the quarterly magazine of the club) posted to your home! Sprat is packed with designs, QRP circuits, membership news etc. Edited by George Dobbs since the formation of the club in 1974. How can many say they have done a job like that for over 40 years, again amazing!


                                                            Join the GQRP club here.










 
The RSGB had also popped along to offer their sales team with some exciting reading and some new publications.










 





Even though I didn't buy much this year it proved to be a good social event,  meeting up with a quite few other Amateurs I know from around the country,  picking up a few ideas, hints and tips, and learning news which I wouldn't of heard of online.







It was time to have a look outside at a few traders that had setup shop, and grab a cuppa before returning back home late afternoon.






Maybe see you there next year or you never know where I am going to pop up next! 
 




























Steve, G1KQH, is a regular contributor to AmateurRadio.com and writes from England. Contact him at [email protected].

Smoky Mountain Summits On The Air

Bob K0NR operating 70 cm FM from Brasstown Bald

Joyce/K0JJW and I were getting prepared for a trip to Gatlinburg, TN in August with some of her family. Gatlinburg is the gateway town to the Great Smoky Mountains National Park and the surrounding area. I had hiked and camped in the Smokies years ago and this was a great opportunity to visit that area again. Of course, we needed to get in a little Summits On The Air (SOTA) action during this trip.

We decided to pick out some easy-to-access summits in the area so we could weave them into the trip without too much disruption. My first step was to consult the SOTA database for potential summits in Tennessee and North Carolina, looking at the summits with the most activations. This is usually a good indication of easy access and not too difficult of a climb. I did pick out two iconic summits to activate: Clingmans Dome (this highest summit in the national park) and Mount Mitchell (the highest summit east of the Mississippi river in the US). After checking the various trip reports logged on the SOTA web site, I created a list of potential target summits. Clingmans Dome and Mount Mitchell were Must Do but any other summits would be more opportunistic based on available time and location.

We are using VHF/UHF for SOTA activations and opted for a basic FM station for this trip: a pair of Yaesu FT-1D handhelds, a couple of vertical antennas and a 3-element Arrow yagi antenna for 2 meters. I debated about whether to bring along the yagi but the split-boom design fits into my luggage without any problem. In the end, I am glad we had the yagi as several of the contacts would have been missed without it.

Greentop

Use of two handheld radios on Greentop to mitigate strong RF interference

Greentop (W4T/SU-076) was our first summit…basically a driveup mountain with radio towers and a lookout tower on top. I noticed quite a bit of interference on the 2 meter band, something I’ve encountered in previous activations near transmitter sites. It turns out that putting a more effective antenna on an HT (such as a half-wave vertical) couples more of the interference into the receiver and degrades its performance. On the other hand, the standard rubber duck antenna picks up less of the interference and performs better then the “good” antenna. After I realized this was happening, I tried using two HTs with reasonable results: one radio with a rubber duck was used for receive on 146.52 MHz while another radio with a half-wave antenna was used for transmitting. The net result was reasonable performance that allowed us to make contacts on 2m fm.

Clingmans Dome

Clingmans Dome (W4C/WM-001) is a popular tourist spot in the Great Smoky Mountain National Park. Parking is a challenge and there are quite a few people on the short trail to the summit.

W2SE and WI2W on Clingmans Dome

Although it sits right on the border of Tennessee and North Carolina, it is in the W4C (Carolinas) Association for SOTA purposes. As I approached the summit, I saw a fishing pole sticking up in the air. I thought “huh, I wonder what the rangers are demonstrating today.” Followed by “Hey, wait a minute, that looks like a SOTA activation.” Sure enough, I met W2SE and WI2W setting up on 20m CW. Joyce and I headed to the observation tower and worked 2m from up there. There were quite a few people on the observation tower so I considered just operating from down below. I decided to leave the yagi in the backpack and just use the half-wave vertical. We fit right in with the chaos of tourists on the tower.

The observation tower on Clingmans Dome

Mount Mitchell

Summit sign for Mount Mitchell

At 6684 feet in elevation, Mount Mitchell (W4C/CM-001) is the highest point in the USA east of Mississippi River. (Interesting perspective: our house in Colorado is 800 feet higher than this summit.) We started with just the 2m vertical but switched to using the yagi when we had trouble copying a few stations. It definitely made a difference…probably 6 dB or so. When signals are near the FM threshold, this can pull them out of the noise.

One of the highlights on Mitchell was working Kevin/K4KPK on Walnut Mountain, summit to summit. Kevin is very active in SOTA and has contributed many SOTA summit guides in the area. I made good use of these reports when planning our trip.

Richland Balsam and Waterrock Knob

Joyce K0JJW at the summit sign on Richland Balsam

We discovered a number of summits right along the Blue Ridge Parkway and we ended up working these two: Richland Balsam (W4C/WM-003) and Waterrock Knob (W4C/WM-004). Another flashback for us was driving sections of the parkway, which is a lovely drive (typically 45 MPH speed limit) that winds through the mountains. It has been years since we’ve been on that road. This route is something I’d like to explore further on a future trip as you could spend a week wandering along the parkway and knocking out summits.

We worked Pat/KI4SVM on 2m fm from Watterock. I recognized his callsign from the trip reports he has submitted to the SOTA web site. Later, I looked up his SOTA score and found that he is a double Mountain Goat (> 2000 activation points) and the highest scoring activator in the W4C association.

Brasstown Bald

The Mountain Explorer Award is a SOTA award for activating in different SOTA Associations (regions). Activating in Tennessee (W4T association) and North Carolina (W4C association) got my total to 6. Joyce pointed out that we might be able to also hit Georgia on the trip, so we added Brasstown Bald (W4G/NG-001) to the list. This is the highest summit in Georgia, so it rounded out our collection of state high spots for TN, NC and GA.

Brasstown Bald is an easy hike up summit with a significant observation tower on top, including a visitors center. This is another location where we experienced interference from radio gear on the summit, so we chose our position carefully and used the 2m yagi to point away from the interference sources.

Bob K0NR holding the 2m yagi while Joyce K0JJW works the radio.

This trip worked out really well. We managed to activate 6 summits for a total of 58 points, operate from three new SOTA associations (W4T, W4C and W4G), enjoy some really nice hikes and see some great scenery. I was a little concerned whether we would find enough random activity on 2m fm for our SOTA activations but it all worked out. Actually, there were a few times that 146.52 MHz was busy and we had to standby to make a call. Some of our contacts were less than 25 miles but many covered 100 miles or more. Yes, the 3-element yagi made a difference.

If you are in the Gatlinburg area, it certainly makes sense to try a few SOTA activations. I am also thinking about a return trip to enjoy the area more fully including some longer hikes. We really liked hiking the trails and summits there. The elevation is lower than Colorado (read: you have oxygen to breath), the forests have lots of deciduous trees (not just evergreens) and the trails are less rocky. I am sure we will be back.

73, Bob K0NR

The post Smoky Mountain Summits On The Air appeared first on The KØNR Radio Site.


Bob Witte, KØNR, is a regular contributor to AmateurRadio.com and writes from Colorado, USA. Contact him at [email protected].

VE7CNF / 630m Mobile … almost.

fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
If you think 160m mobile is a challenge...



Hot on the heels of his recent 630m maritime adventure, Toby (VE7CNF), continued to demonstrate the flexibility of his small 20W 630m portable system with an afternoon of fixed 'mobile' activity from his vehicle.








Local 630m op's in-boxes received a surprise alert on Tuesday:

"Are any of you available on Tuedsay for a 630m land mobile test with VE7CNF/7?"

Toby set things up at Sea Island's Iona Regional Park, situated on the ocean's edge just north of Vancouver International Airport. This gave him a good shot to several of the local 630m ops around the local region.

When Canadian amateurs first approached RAC and Industry Canada for a slice of spectrum near 500KHz, the main goal was to secure a frequency range that would support excellent groundwave propagation for a possible future emergency data network. Whether this will ever happen or not remains to be seen, but Toby's afternoon outing, along with the recent 630 marine mobile activity certainly helps to demonstrate the potential for the band to provide reliable signals with relatively small antennas and low erp.

Toby's basic transverter is rather unique in that the transmitter's FET power mixer also passes signals backwards to function in the receive mode:

"I’ve developed a 630m band linear transverter that produces 30W of transmitter power. It has no power amplifier and draws only 175 mA from a 12V power supply. It works for both transmit and receive with no T/R antenna relays or switching circuits.

I’ve used a bidirectional high-power mixer circuit to directly take 100W of power from a 160m band transceiver and produce useful output power on 630m. For receive, 630m signals can pass backwards through the circuit and are up-converted to 160m. 

My transverter is actually the small box on the dash above the steering wheel. The gear in the back near the variometer is used only during setup to resonate the antenna. It's a signal generator and oscilloscope. The AC transformers are just an isolation transformer that I need to make the test equipment work with my 12V-to-AC inverter."

Toby VE7CNF/7 at Iona
Toby's own report on the outing:

"VE7CNF/7 Operation was from the Iona Beach area near Vancouver, grid CN89jf. The location is right beside salt water. There are no nearby power lines so rx noise was S0. Operation was in daylight, around 4 pm local time. Signals were excellent and all CW was easy copy. 

On 475.0 kHz CW I managed to work Roger VE7VV (CN88il, him 529, me 579) and Jack VA7JX (CN79kv, him 569, me 579). I heard Steve VE7SL (CN88iu) at 599 briefly, then he had a problem and we didn't complete a QSO. He gave me 599 later by email.

The antenna is about 24 ft high and the fishing-rod-and-wire top load is pulled forward about 8 ft. The matching circuit is a loading coil, variometer, and autotransformer. My Tx power was 20W TPO and estimated EIRP 75 mW. The rig was my home brew transverter with an IC-7410."



"After CW I ran WSPR for a while, 23:42 to 00:08 UTC (4:42 to 5:08 pm local). WSPRnet lists my spots as my home QTH CN89ng, but I did have CN89jf entered in WSJT-X. I got spots from WI2XJQ -17, VE7BDQ +14, VE7AB +6, VE7VV +1, W7IUV -26, WH2XGP -30 dB. I also decoded WSPR from VE7VV +7 and VA7JX +9 dB."

"This was great fun. I'll have to try more locations, and see if I can improve the equipment for easier setup. I had great copy on Roger 529 and Jack 569. Working Jack was a surprise, and his signal was excellent. Being beside salt water is magic. Rx noise was so low at that location, near Iona Beach CN89jf."



Our 'new' band continues to demonstrate its ability to offer exciting opportunities to experimenters, home-brewers and DXers alike and for those with the creative imagination to push new boundaries, who knows where one of the first frequency ranges to be used by amateurs back in the 20's might eventually take us.

I can visualize, at some point in the future, the usefulness of a province-wide 630m emergency comms network utilizing a basic 'grab and go' system based on much of Toby's demonstrated work.

If you are a Canadian amateur why not join the fun on 630m now? U.S. amateurs will be arriving shortly and when they do, things should be getting even more exciting on the new band!

Steve McDonald, VE7SL, is a regular contributor to AmateurRadio.com and writes from British Columbia, Canada. Contact him at [email protected].

ICQ Podcast Episode 247 – PiStar

In this episode, Martin M1MRB / W9ICQ is joined by Chris Howard M0TCH, Martin Rothwell M0SGL, Dan Romanchik KB6NU and Ed Durrant DD5LP  to discuss the latest Amateur / Ham Radio news. Colin M6BOY rounds up the news in brief, and this episode’s feature is PiStar

We would like to thank Alexander Zigar (M0SUV), Antony Mark Tilt and Philip Stephenson (KØPWS) and our monthly and annual subscription donors for keeping the podcast advert free. To donate, please visit - http://www.icqpodcast.com/donate

  • ARES and ARRL Promote Ham Harvey Assistance

  • Digital Modes for Foundation Level?

  • ARRL finally realizes “status quo” isn’t going to cut it

  • ARDF Record at YOTA 2017

  • Ofcom Resolves Car Locking Issue

  • UK M6 amateur handles Emergency Call

  • Three ELaNa CubeSats Delivered to ISS

  • Galapagos Islands DXpedition

  • Estonia on 60m from September 2017


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

ICQ Podcast Episode 247 – PiStar

In this episode, Martin M1MRB / W9ICQ is joined by Chris Howard M0TCH, Martin Rothwell M0SGL, Dan Romanchik KB6NU and Ed Durrant DD5LP  to discuss the latest Amateur / Ham Radio news. Colin M6BOY rounds up the news in brief, and this episode’s feature is PiStar

We would like to thank Alexander Zigar (M0SUV), Antony Mark Tilt and Philip Stephenson (KØPWS) and our monthly and annual subscription donors for keeping the podcast advert free. To donate, please visit - http://www.icqpodcast.com/donate

  • ARES and ARRL Promote Ham Harvey Assistance

  • Digital Modes for Foundation Level?

  • ARRL finally realizes “status quo” isn’t going to cut it

  • ARDF Record at YOTA 2017

  • Ofcom Resolves Car Locking Issue

  • UK M6 amateur handles Emergency Call

  • Three ELaNa CubeSats Delivered to ISS

  • Galapagos Islands DXpedition

  • Estonia on 60m from September 2017


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

Amateur Radio Weekly – Issue 171

Longest distance Amateur 3.4 GHz contact via Moon
Matthew Cosby and Noel Matthews (G8GTZ) talk about massive dishes, Moon bounces and making a world record.
SpaceKate

Charging a laptop from 12V
I’m charging a little HP laptop which takes 19.5V so the converter is set to that and all boxed up nicely.
marxy’s musing on technology

Maritime mobile operation on LF may be a first for Amateur Radio
What began as a “let’s-see-if-we-can-do-this” effort resulted in successful Amateur Radio contacts on 475 kHz.
ARRL

Ofcom takes action against repeater abuse
Ofcom has mandated that GB3DY at Wirksworth and GB3EE at Chesterfield go silent for 14 days.
Essex Ham

Fine tuning noise floor testing methodology
Hot vs cold assumption: A colder dongle has a lower noise floor.
Radio for Everyone

RadioShack dealers unleashed by latest bankruptcy
The future is bright for franchisees, a Wisconsin dealer says.
Twice.com

Recognize your Elmer
ARRL’s Elmer Award and mentor program.
KB6NU

Waterfalls from the eclipse
You can see waterfalls for the 3 bands. They use the same scaling, with a dynamic range of 50dB, so it is easy to see how the noise floor changes per band.
Daniel Estévez

Worked All Europe from a train station
I tossed a half wave wire over a maple tree on the hill overlooking the old station. There was a picnic table directly underneath. I used the KX3 on 20 meters.
AmateurRadio.com

Video

Overcoming mic fright and making your first radio contact on the air
A few tips to encourage those that might be suffering from an easily curable ailment called ‘mic fright.’
K5ACL

Mobile antenna setup
Mobile in the car with a Chameleon Antenna.
SA5LKC

CRT Cataract Repair
A tutorial on removing CRT cataracts from old screens.
John Sutley


Amateur Radio Weekly is curated by Cale Mooth K4HCK. Sign up free to receive ham radio's most relevant news, projects, technology and events by e-mail each week at http://www.hamweekly.com.

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