Posts Tagged ‘Portable’

A dark cold evening in a layby

True to my last post I drove out to some higher ground to operate portable for the 70cms UKAC on Tuesday evening.

Several hours sitting in the car on the side of a deserted road in the dark and cold was worth it. Despite some initial trepidation I really enjoyed the experience until I got spooked at the end.

Like the last time I operated from this location I put the small yagi approximately 3-4 metres up on the top of my 'painters' telescopic pole stuck in to a parasol stand. I sat in the car and reached out the open window to rotate the pole as required. I wrapped up well and had a blanket over my legs and a woolly hat on and kept surprising warm despite it being just 1°C, turning the courtesy light on only when I needed to write in the log.

It was nice to be noise free and I made 29 contacts, nothing earth shattering but with a modest set up and operating in the AL section (10W max) I was more than happy and got my first contact in the Isle of Man.


From the reports posted on line it seems conditions were flat and activity was low. Frustratingly several times I found a distant station only for it to be drowned out by splatter. I know some of this is down to my radio and the antenna but the source is nearby and so strong that even turning the beam makes little difference. Ironically being higher up meant the signal was even stronger than I experience at home.

The annoyance is compounded by the operator's habit of regularly changing calling frequency seemingly with little regard of who is currently operating there. This SDR screen capture shows an example of the same contesters signal during a recent 2m UKAC. Captured using a vertical collinear several strong clean(er) signals are clearly visible even with the mismatched polarisation. Sadly it is not a one-off and I have observed similar splatter from this source during both 70cms and 6m contests.



It was very dark and eerie on the quiet road and I'm afraid I got spooked with 20 minutes of the contest left, a 4x4 drove past slowly and appeared to shine a spotlight at my car. I was midway through a QSO writing in the logbook so I only caught it out of the corner of my eye so wasn't sure if they did. But a while later I saw what looked like torch beams moving in the nearby field that seemed to be getting closer. In retrospect it was nothing untoward when I checked the map later there are farm buildings in that direction but I've seen one too many horror films so decided not to hang about so threw everything in the car and headed home with out looking back..

you can't get rid of the Babadook
.... you'll see him if you look 

Operating /P for the 432MHz UKAC tonight

The 432MHz UKAC contest is usually a pretty dismal experience for me, low elevation, local noise and a mediocre antenna makes for a difficult evening. Last weekends VHF/UHF contest and some tests with fellow club member Stewart​ (M0SDM) on Sunday evening convinced me to try operating portable this week.

I have a small Moonraker 7-element ZL-Special on the main antenna mast, purchased originally for monitoring satellites and was pressed into service for SSB when I got licensed. It has never wowed me performance wise and I have been intending to replace it for quite a while but since I only use it one day a month it hasn't been a priority. So the mast came down last night and I removed it so I can take it out with me to operate portable from some higher ground tonight.

Using the 2m delta beam in June 2014

Last year I had a go at operating portable from the car and posted a write-up. It is my intention to repeat this exercise but with the 70cm antenna on top of my 'painters pole' mast. I have serviced the antenna and fitted a new short run of quality coax and spent a far amount of time with the AW07A analyser adjusting the antenna's tuning capacitor and have got the VSWR right down to 1.1:1 on 432.200MHz so things should be optimal.

I am looking forward to this evening, hoping it pays some dividends.

As I mentioned the 24 hour March 144/432MHz VHF Championship contest took place last weekend. I took part to give away some points just grabbing a few short sessions with the radio. I concentrated on the 2m band due to my issues on 70cm.

In my AW07A analyser review I mentioned some issues with my 2m LFA YAGI, thankfully these have been resolved. The use of some wire wool to remove some corrosion and a hacksaw to take 10mm from the long elements of the loop allowed the end elements to 'trombone' in sufficiently to get the antenna resonant and the VSWR is down to 1.2:1 on 144.300Mhz.

I only made 18 contacts, but was happy with the distances achieved with 30W, getting a lot further south than I normally do, given I am 18m ASL. There was also some local wideband noise (I captured a screenshot on the SDR) and the conditions gave some interesting fading.

M0NRD QSO map March 144 VHF

Noise across the band



   

My Latest Contraption, a QRP portable, all in one, seat & table, etc!

Bungee Tie Down, Close Up

I added a bungee cord on each end to prevent damage from the radio accidentally falling off the table.

Bunggee Does Not Touch The ButtonsThe cord does not touch the buttons.

Bungee Tie Down, Rear View

View from the back

My Latest Contraption, A QRP Radio, Portable Table and Chair 11-12-2014 1-22-32 PM 2448x3264

All in one, QRP seat, table,  umbrella and antenna anchor! The bottle on the table is bug spray! LOL

 

Kx3 Radio In Operation on the Table  11-12-2014 1-25-015

The table is a cutting board attached to the existing shelf.

The cutting board is bigger than the existing shelf, so I have more room for logging and a sturdy place to attach the antenna!

A bungee cord takes up the slack from the antenna in the wind. In a real world test, I found that one radial is all I need.

I tried an experiment, adding two, then four radials. There was no detectable change in signal level by ear on or the S meter.

One radial did the trick, and 4 radials didn’t improve the signal at all.

 

Me, In The Drivers Seat of My Portable Table & Chair Set Up 11-12-2014 1-35-43 PM 2168x1870

Note the guy ropes. This is to hold the chair in place. The golf umbrella is stuffed into  a piece of PVC pipe.

The PVC pipe is tied to the chair with cable ties.

Wind and the antenna pulling on the table would easily turn the chair over.

Satisfaction, with My Latest Contraption

Satisfaction! I can’t wait for the next ham radio outing with my QRP buddies.

Pictures from KH8/K8GU

I don’t really have time to do a full write-up, but I made a “quick” trip to American Samoa over the weekend to plan a future scientific instrument installation and managed to get on the air for a few hours.  Here are some snapshots from my phone.

Snapshot of Utulei village near my hotel. The "Main Road" in American Samoa. The road up to (or rather, down from, in this case) the research/operating position. 184 steps lead down to the point where I operated.  Although I left the antenna set up overnight, that was a hike even with the relatively light K2, computer, and provisions. From the point, looking back toward the pump shack where my equipment and operating position were. Looking about due West from the antenna location.  JA is actually to the right of this photo.  The upshot is that I had a clear all-water path to JA, EU, and NA, and sometimes the band was open all three places at once. The "GU Special" fully extended for 40 meters.  This is facing approximately North, or toward EU.  40 meters was a bust with lots of radar and freebander interference. The operating position at KH8/K8GU.  Poor ergonomics but it was good enough to make almost 1200 QSOs in about 12 hours of operating over two days. Moonset captured on my way up to the Observatory one morning.

Portable in a very windy Cumbria

Before amateur radio took over my life my main pastime was competing at dog agility which I did moderately successfully for many years, for several of those I was even the chairman of a Nottingham Agility Dog Training Club and organised one of the larger Kennel Club Championship shows as well as judging at many events. If you search my YouTube page there are a number of videos showing me and the dogs in action.

Things change and sadly I became disillusioned with the sport as seemingly endless rule changes and its increasing popularity saw it losing its core ideal, what was meant to be fun for dog and handler had sadly become too competitive, professional and commercial, too many people now make money out of the sport and what was once an enjoyable social activity is now spoilt by unsportsmanlike behaviour, complaints and bitchiness.

When my dog Boris suffered a cruciate injury the enforced time-out made me realise I didn't want to do it anymore and so I don't.. well apart from the odd exception, last weekend was the West Lakes Agility Club Show held in the small town of Haverigg on the Cumbria peninsula (Locator IO84IE)

This is a lovely old-style small friendly show with the bonus of being held just a stones throw from the sand dunes and beach. I had agreed to go and like the recent holiday in Skye it was initially planned with no thought for any radio operating.

We would be caravanning at the show for the best part of four days without any electrical hookup and the wife had volunteered to help on Saturday leaving me on my own for most of the day... so a plan was hatched at the last minute.


I purchased a nice new 'spare' 100A/h leisure battery and smuggled on board the FT-857D with some suitable battery clips, headphones, a fiberglass pole, some antennas. I don't own a suitable 'portable' ATU at present,  having borrowed one from SKARS on several occasions but as this was a last minute thing I would have to chance operating without it. I took the M0CVO HW-20P OCF-Dipole, which has a usable VSWR on 20m, 17m, 15m, 12m and 10m without an antenna tuner and the M0CVO Magitenna, but wasn't sure what I would get from this as I'd only ever used it with a ATU.

The weather was difficult all weekend, we arrived on the Friday to be met with warm and sunny conditions but a steady strong wind. There was bit of a battle to get the caravan awning up but we managed it.Saturday the wind just got stronger, the forecast for Sunday was for even stronger winds so it was dismantled and packed away, indeed it was worse around 25-30mph with must stronger gusts.

Undeterred I got the antennas up,  however the fiberglass pole I have must be getting on for 10 years old, and would often fly a pirate flag when camped at agility shows. It had already lost it's top section many moons ago but was still quite tall and so I hoisted up the OCFD balun and coax and the end of the magitenna wire in the buffeting wind and it was swinging around wildly - almost inevitably it proved too much and the remaining top section splintered!


Despite losing over in a metre in length I tried again and managed to get everything up, the OCFD wires were tied out to form a sort of inverted-vee using a handy nearby fence, the Magintenna was pulled to form a sloper across over the front of the caravan, but due to the lost height actually touched the front of the roof. Amazingly I got an almost 1:1 VSWR on 40m and loud and clear RX.    



This weekend was the International Lighthouse and Lightship Weekend (ILLW) this annual event has been going since 1995 and promote public awareness of lighthouses and lightships and their need for preservation and restoration, and at the same time to promote amateur radio and to foster International goodwill.


The bands were kind and I had an enjoyable Saturday afternoon and a few hours on Sunday making QSOs with a number of UK and European lighthouse stations on 40m and 20m and it seems the whole event was a great success. Alas the wind proved too much for the remainder of the fiberglass pole and it developed a large crack in the bottom section forcing me off the air.


By coincidence Haverigg has two lights, the old Hodbarrow beacon and the restored Hodbarrow Point lighthouse (pictured above from the beach). Last year we walked to the restored lighthouse but since the restoration was completed in 2004 it is sadly looking in need of some remedial work.


I only learned of the ILLW event at the last minute and sadly neither of the Haverigg lights were activated that weekend, next year if the show is on at the same time I may look at trying to operate from them.

Oh and the wind? Here is a video of a walk on the beach on the Sunday morning..

Back from Skye


It is back to the real world after a great week in the Isle of Skye with almost constant sunshine, temperatures topping 28°C (83 °F) and very humid conditions. Some great walks with the wife and the dogs to some new locations, the highlight was watching a school of porpoises playing in Loch Bharcasaig.


The cottage was booked last year primarily for our holiday requirements with no thought of radio operating as this has come later. As I feared in my previous post my unpreparedness meant disappointing operating as 2M0NRD/A

Located on the main tourist route up the Waternish peninsula I didn't want to have any unsightly aerials up at the front of the property. It is situated part way up a hill side and knew there was a wooden fence at the rear and to the right separating it from the neighbouring croft. I had taken a couple of 6 meter long fiberglass poles which I could bungee cord to the fence and then string the OCF dipole between them or alternatively use one of them to hoist the M0CVO Magitenna as a sloper. These poles and wires would be largely be obscured from view by the cottage.

The rear fence runs north to south, meaning the main lobes of the antennas would be to the west and east, not ideal for any ‘inter-g’ UK operating, so I had planned to use the side fence. What I hadn't spotted on the photographs was the overhead power line running on that side of the property. I could have put them up but opted for safety and used the rear fence.


I set up base in the spare bedroom at the back of the cottage but I really didn’t get to operate very much. We were out and about during the day and I did dabble on HF for an hour or so on some evenings. I could certainly hear a lot more than I do at home with very little noise and had some very strong signals coming in. I made a few QSOs but other than the contesting I am still finding my feet as an operator and being mike-shy I find the HF bands intimidating. I struggled to find a free frequency but did call CQ on 40m and 20m but with no response even after several minutes, eventually giving up as I was invariably swamped by another operator.

Last week was also the start of the 2014 Commonwealth Games in Glasgow, not only did I see some of the stadiums and venues while driving up to Skye but I also heard the special event station GA14CG operating out of Stirling on 40m some evenings. It was a huge S9+ signal and despite several sustained attempts I was unable to break the pile up. Seems they were beaming south and being north of them in Skye I stood little chance being at the back of their Cushcraft X-240 with just 50W and my OCF dipole being end on in their direction..!

Having holidayed in Skye before I was aware of the terrain but having surveyed the cottage using Google Streetview it seemed nicely situated. Upon arriving at the cottage it became apparent that the mountainous terrain was a bit more imposing than Streetview had shown, so not unexpectedly the 50MHz UKAC on the Tuesday evening was a disaster!

I spent the best part of an hour tuning around the band, occasionally hearing faint voices in the static but nothing legible. I vainly called out “CQ Contest” for a while but nothing was heard, even using the tuned dipole – even if I had managed to build the planned Quad beam it is unlikely I would have fared any better. 

The cottage was meant to have broadband and Wi-Fi facilities but a fault meant this wasn't working all week, coupled with no mobile phone signal left me feeling cut off, ironic really given the founding principle of amateur radio communication. I did do some digi-modes but without an NTP connection the error in the laptop clock (several seconds a day) meant I was initially too far out of synchronisation for JT65 or WSPR until I realised I could use the clock on my Garmin GPS which I use for geocaching. Doh!

It is likely we will be going back next year and hopefully will be a bit more experienced as an operator and will be more prepared. 

Oh and here are the porpoises I mentioned earlier

144MHz Backpackers Contest

I had a great time today competing in the 2nd RSGB 144MHz Backpackers contest. I entered the 10W Hill Toppers (10H) section since I could operate from the comfort of the car and I could use the FT857 as the Hill Toppers section in the RSGB contest allow operation up to 10W.

The Backpacker (3B) section and the concurrent Practical Wireless 144MHz QRP Contest are limited to just 3W. Normally the FT857 can only be lowered to 5W but by applying a negative voltage to the transceivers ALC line via the accessory socket the transmitters output can be lowered. This method is detailed here it is a simple circuit and I will make one up in due course, I didn't have the parts to make one in time.

Anyway I digress, firstly I had to find a suitable hill top that wasn't too far from home. I wanted somewhere quiet and minimised the risk of any confrontation with societies undesirables. A quick look on the local Ordnance Survey map and I spotted a viewpoint symbol.

1:50,000
1:25,000
It isn't exactly a mountain at just 82m above sea level but is nearby and seemed quiet when I drove out to inspect it. It is the Maplebeck View Point and has a metal plate highlighting hills and structures that can be seen from the 'summit' sadly the overgrown hedges did limit the view but it did seem a decent spot with an off road parking area and picnic tables.

The viewpoint
The information plate on the viewpoint

I now needed to sort out the equipment. Operation from a motor vehicle is permitted but all equipment used during the contest must be battery, wind or solar powered. So I made a trip to grab the spare leisure battery from our caravan and the cast iron parasol stand to act as a base for my pole, the antenna would be the Sandpiper 3 element Delta Beam I used in the Lake District.

battery wedged behind drivers seat
Parasol stand and painter's telescopic pole
Operating from the passenger seat, FT857 on dashboard
Antenna up
I had the FT857 on the dashboard and sat in the front passenger seat, the pole was within easy reach out the window and I had fitted a small pointer on the pole so I knew which way the antenna was pointing, so could turn it by hand.


I was initially quite nervous setting up as it turned out the road was actually quite busy and I was getting a lot of quizzical looks from passersby, but once I got going I just ignored them and enjoyed the contest a lot. A number of walkers asked what I was up to and it seemed the viewpoint was a stop off on a MG owner's outing this morning.


I made a reasonable amount of contacts, given most people were operating QRP with some decent distances. I did suffer one brain fade and missed another potential locator square when the other station repeated my report back and I blindly wrote it down and then lost them before I was able to correct it.

At one point I thought I would have to pack up as I was getting huge static crackles and pops which were due I think to some nearby high tension electricity pylons and what appeared to be a gathering storm, there was some brief rain but it quickly dissipated.

Next month I am looking forward to the VHF National Field Day and the 3rd Backpackers Contest as a number of members of the South Kestevan ARS are keen to have a serious attempt.

Subscribe FREE to AmateurRadio.com's
Amateur Radio Newsletter

 
We never share your e-mail address.


Do you like to write?
Interesting project to share?
Helpful tips and ideas for other hams?

Submit an article and we will review it for publication on AmateurRadio.com!

Have a ham radio product or service?
Consider advertising on our site.

Are you a reporter covering ham radio?
Find ham radio experts for your story.

How to Set Up a Ham Radio Blog
Get started in less than 15 minutes!


  • Matt W1MST, Managing Editor




Sign up for our free
Amateur Radio Newsletter

Enter your e-mail address: