Wednesday, March 18, 2020

Crazy things that happen when you are a portable ham

Beware it has become a long post..

When I am out working portable I look for places where I am not in anyone's face. That is easier with a wire up a tree and more challenging when using my portable hexbeam. It usually means I am in a desolate place. Either in a nature reserve (as WWFF activator) or some other park or abandoned space to test antennas or work specific DX.

Being out there as ham radio operator for some ten years now I have had a couple of memorable encounters. I thought it would be nice to share some.


Meeting police

More than once I have met police while being out working portable. Not surprisingly the officers generally want to know what I am doing. Most of the time they are curious but move on when they find out I am rather harmless. Once in a while the officer is old enough to remember the time a lot of people had (CB) radio's so chats a bit longer. Like any other passerby the comments on the hexbeam are usually along the lines of "hanging out the laundry?".

In my village I had a meeting with police one time when I was driving home after a low band activity in the early hours of Sunday morning. The patrol car stopped me as they probably had nothing else to do and I was the only one driving around at the time. The funny thing is that the first officer was somewhat suspicious of the amount of stuff in my car (radio gear, antennas, wires, Spiderbeam poles and my aluminum mast). She kept asking me questions to figure out what she was dealing with. But then her partner came up to the car and said "he is a radio amateur" (that it explains it all, right?).
The crazy thing of course is... how did he know? Clearly one of the earlier encounters had lead to a note in the police database. I am now formally known as the odd ham radio guy.

There was one police officer in PA that was more than annoyed with my activity. It was during an activity close to the coast. She did not understand what I was doing and kept on repeating the she found the whole thing fishy. However she also concluded (implicitly) that there were no grounds to stop me, so in the end she moved on - but visibly reluctantly.

The most depressing encounter was a meeting with the honorary police in GJ. They were ignorant of ham radio but did not let that fact keep them from acting tough. They drove up to our lovely desolate place where we had just set up the hexbeam (see below) and a low band inverted V. Unfamiliar with what we were doing - as foreigners, at dusk - they were determined to put an end to all of it. However, they had no real arguments that we could no counter (like: "you will be influencing the air traffic communications"). It was late Saturday evening and dispatch was not going to give them any guidance. In the end they settled on the need for an air traffic supervisor to give us permission. Of course that person would only be available the next morning. So we lost one park activity that day. (the air traffic supervisor laughed the whole thing off by the way)
Hexbeam ready to push up in GJ - just before the honorary police turned up


Meeting park management

So far my experiences with park management - that you are likely to meet when you are a WWFF activator - are nothing but positive. In fact most of the time they ignore me. Of course I take care not to damage anything or be in anyone's way.
Once a ranger approached me and asked if I was working for the national broadcasting service. That was a first for me. It turned out he was actually having a meeting that day with a reporter on some nature topic. Seeing me with my antennas, he was convinced I was a broadcast guy.


Meeting fellow hams

When fellow hams catch me with my antennas they will come over to identify themselves and exchange experiences. Most are stay-at-home-hams that find it hard to see the fun in going through all the work to play radio for a few hours. 
In PA I have met a dozen amateurs this way. Of course there are also fellow hams I organise to meet /P. Like Jakob OZ7AEI/P and Finn OZ3FI/P (sk) in OZ, Andrew M0YMA/P in PA and Auguste HB9TZA/P in HB0. On expedition in GJ I had the pleasure of meeting Nigel GJ7LJJ as well as Keith G8IXN who just happened to pass by. Incidentally we ran into Keith twice (small island..). Portable in DL one time DL1EBR came by to say hello.
It is always nice to get faces to the voices you have heard (many times) before.

And then there is the ham who works as a police officer, as I found out when a police van pulled over when I was activating a nature reserve in PA. The police officer started to ask some specific questions about what I was doing - which I found rather curious - only to "come out" and explain that he was a local ham radio operator. Not long afterwards I actually met him on the radio.

Sometimes there is only a link to the hobby: once a lady approached me to ask if I was a radio amateur to add that her late husband had been one.. and she really hated it (I did not have a witty return on that one). 

Twice I managed to sneak up to another ham radio operator working portable in my area. Once it was Swa ON5SWA working from PAFF-0019 (and SOTA) and the other was PD0RWL working from PAFF-0085 (and COTA-PA).


Sneaking up to PD0RWL with my loop - receiving an S9++++ report


Meeting other fellow humans

You meet all sorts of people out in the field. You recognise the different types over time. Some are curious but reluctant to approach you and others want to know all about it even when you are in the middle of a pile-up. 
Most are curious about what the fun is and sometimes I am able to transfer a bit of the magic of making radio contacts when I explain it to them enthusiastically (mostly they look wearily though). 

Once in a while you meet people that make a lasting memory. A few of the highlights:

Alienating
Quite early in my "portable career" I was in a nature park when a group of bird spotters came over. I can't really understand the fun in what they were doing but they were serious about it - their whole outfit including massive binoculars screemed "serious spotter!". I tried to explain what I was doing but saw it did not click with them at all. I tried some other angles and then I mentally zoomed out and saw the absurdity of the setting with two species looking at each other as aliens.
Other alienating meetings are the ones with people that have their own reasons to be at the secluded places I usually end up at. There are the guys looking for guys. Slightly akward. So far I have not been approached (only scanned) so I think the elaborate setup of wires sort of gives away I am there for a different reason.
Another category is the "second love" pair - a man and woman arrive each in their own car. For a while they share one car and then drive off again (to unsuspecting "first loves" I guess).
Sometimes you get the feeling you have ended up in a play or a movie.

Scary
It happens that you scare people. Like the one time we were testing a lowband setup with the YNOMY team. We were working with high masts (including my 26m Spiderbeam pole) and lots and lots of wire in a small park when a local turned up in his Range Rover. Quite agitated (as in: nervous not aggressive) he asked us what we were doing. It is only afterwards that we understood that he was afraid something permanent would be installed. We missed the opportunity of pretending to be working for a telephone company installing a new tower (the poor man..).  

Then there is the odd encounter that actually is scary. So far I have had only one: I was in France in a nature park quite far from the civilised world. There was a small road through the park and looking at the map I had seen one tiny track just off that road to an open space next to a river (see photo below). I found the track and parked my car on it to find the open spot that clearly was visited more often judging by rubbish laying around and remnants of an open fire. I thought youths must be using that area. 
Remote place in France for a memorable FFF activity
Just when I had set everything up a car stopped behind mine on that narrow track. Out came a scruffy guy that looked completely bewildered. He asked me how I had found this spot - as if it was some sort of hidden place. It seemed he came there more often and was not particularly amused to find me there. He was uneasy, and when he learned I am from PA he started to refer to drugs - which I am not interested in so that line of conversation was rather short. I tried to ignore him and started playing radio. The notebook I was using for logging had (and still has) a broken screen. Not a problem for me as it is still usable but it attracted his attention. He walked to his car and came back with a notebook asking me if I was interested (so picture this: scruffy guy, hidden place, drugs, spare notebooks to share... not the best pal to share a remote spot with).

The next thing he did was even more cinematic: being slightly bored he started to fiddle with his notebook using his pocket knife. Okay.. so here we have the scruffy guy a few meters away with a large enough knife. Interesting.

This is the only time I was aware of and made sure that my hammer was within short reach.

My new friend did leave in the end but it was the least enjoyable radio-activity I have done so far.


Saturday, September 28, 2019

Wet but still great activity from Ameland

In the afternoon of Friday Sept 27 I arrived on Ameland Island (part of EU-038) for a weekend with my in-laws, celebrating their 50y honeymoon anniversary. Knowing I would be on an island that also contains PAFF-0073 - the last unactivated PAFF - I was keen to take my radio with me.

We would travel to the island without a car so I prepared my bicycle so it could transport a lot of stuff.

Mountain bike customized into trekking bike with a lot of extra weight

Getting nearer to the weekend two forecasts were worrying - a geomagnetic storm with Kp up to 6 and rain with strong winds were both on the agenda for the weekend.

I chose to take a smaller pole (12m) than I usually deploy and decided I would take my mobile amp and a stack of LiPo's as they would give me just a bit more chance if conditions would be poor even though it meant my bags would be heavy.  


Strong wind on the island

When I was on the island checking the rain radar I knew I would not stay dry however I would plan my activity. So I took my rain clothes and a lot of plastic to cover my gear and went out.

Ominous clouds over the dunes at Ameland

I found a nice place in the dunes overlooking the sea. It started out nicely with some sun. There was an almost immediate pile-up on 20m that seemed to continue forever. 


12m Spiderbeam pole in the dunes fighting the wind

Conditions seemed good enough with some particular strong skips - with the benefit of sea water nearby surely. Quite a few NA stations came by some with signals up to s9 like Tom KG8P from MI and Norman N9MM from TX (a rare KFF p2p for me).




Unfortunately the rain came as expected and two times I had to "sit it out" for half an hour by just covering all the gear and myself (quite a challenge for an impatient guy like me to just sit there for 30 minutes waiting). 

I was out in the dunes for some 3 hours with 2 hours of effective radio time on 20m and 40m. By the time the third rain shower appeared I'd had enough and went back to the cottage to get dry and warm.


Later that evening - I was at the yellow circle
In the 2 hours it was busy enough. Being just before or at the start of a solar storm seems to be a lucky timing after all. I logged 238 QSOs (34 DX) from 38 DXCC, including 13 W states and 3 VE provinces. Odx was 9700km to PY1.


Monday, September 23, 2019

To activate or not to activate

Next weekend I will be on the island of Ameland (EU-038). As a radio amateur there is one central concept that concerns the mind with such a prospect: sea water!




As an IOTA reference Ameland and the neighboring islands have been activated a zillion times but there is a nature reserve on the island that has not been activated before. Another good reason to be radio-active there.

So, no discussion then: pack the radio gear and have radio fun!

Not so fast.. 

  1. I will be on the island invited by my in-laws to celebrate their 50th honeymoon anniversary - they will have put together a 24h program for the weekend with a full-time role for me.
  2. I will be on the island without my car but need to move around with my gear to be able to activate the nature reserve.

Okay, so I could probably squeeze in a few hours at the start of this social event. Any disappointment about that can be smoothed out during the rest of the weekend.
Regarding transport: I can take a bicycle with me on the island. So I am currently refurbishing my mountain bike so that it can carry all my radio gear (with bike rack and proper transport bags).

That is that sorted then?

Well, recently two other obstacles raised their ugly heads:
  1. NOAA expects we will have a geomagnetic storm this weekend with Kp values up to 6.
  2. The weather forecast shows rain throughout the weekend.
At Kp=6 there is not much radio fun to expect and being at the sea side in the dunes with wind and rain is not an option either. 

So I will be closely monitoring both forecasts to see how they will play out. I need 2-3 hours of dry spells before the geomagnetic storm starts raging. Fingers crossed.

Thursday, September 19, 2019

Stylish inverted V multiband antenna

Spending most of my radio time /P, I have over the years built and used many different antennas. The inverted V dipole was always one of them but mainly for 40 and 80m as I used end fed verticals for the higher bands (due to the length you quickly end up with an inverted V configuration on lower bands).

I started out with four individual dipoles - one for each band 160, 80, 60 and 40. During my activities I mainly use 80 and 40 of the four so I decided to combine them into one dipole for 40m and 80m - using bullet connectors to change bands. The benefit being that you don't have to change antennas - only lower the mast somewhat to reach the connectors.


Bullet connectors to switch bands

Lately I have been using the inverted V for 20m as well - adding that to the multiband version - as I have found it works well within EU and for DX and again it saves me changing antennas. 

Looking at the radiation diagrams on 20m you can see that the inverted V (blue) radiates better on the higher angles compared to a half wave vertical (red). Note that this is a broad side view. From the ends the inverted V loses significantly more versus the vertical (10dB at a 15 degrees take-off angle on 20m) - so for DX the orientation counts.


EFHW vs Inverted V - 14Mhz - 18m pole

Planning for a future trip where I would have to travel relatively light, I decided to tweak the dipole even further adding all HF bands from 6m down to 80m (160m I would hardly use and would make the antenna rather bulky). 
It took two field tests to get it right. I started cannibalizing the existing 20-80m version. After a few hours out in the field I had cut all elements and established that I needed to change the existing 30m and 40m elements. Then time ran out.
In the second run I found a few peculiar mistakes with 15m being quite a bit off (measuring error the first time?). So a few more cuts and tweaks were needed but 2 hours later my antenna was ready.

One thing to keep in mind is that the impedance of an inverted V changes when the angle between the two legs changes - which it always will between deployments. If you increase the angle, the frequency at which the impendance dips goes down. There is a "sweet spot" of element length vs angle that gives you a dip around 50 Ohm. 

One eye catching feature of my antenna is the way I have attached the elements (for when they are not connected). I started out with simple rope to hold the pieces together but as I unroll the antenna in a different way (rolling it off a cylinder) than I roll it up (adding turns by hand), the elements are twisted each time. The copper wire can cope with that but the connecting rope transforms into a small knot after a while.
So I had the idea to enable the various pieces of wire to twist independently and - having two daughters in the house - came up with a design featuring pink and purple beads. 




I am quite sure this makes it a unique dipole as far as dipole go.

I tested it out during a 3 hour activity from nature reserve PAFF-0067 on 17, 20 and 40m. I worked more than 200 chasers with great reports so it seems to work well.



Monday, August 5, 2019

FFFs during my summer holiday

During my summer holiday in France I was radio-active from various FFF locations - six in total. I usually visit four parks in two /P days out but conveniently this year both campsites we stayed on were inside nature reserves.

I have not made that many QSOs from the campsites as (1) it was by times too hot to do anything, (2) I was in a tent where my favorite mode phone gets annoying for the surrounding quickly and (3) my family expects me to socialise with them in stead of other hams.
We stayed a bit longer in the Dordogne region so I was on the air from that campsite a few times.

In total I logged 805 QSOs from 43 DXCC on 20 and 40 meter:
  • FFF-0031 Park National La Brenne (campsite) - 85 QSO FT8/CW/SSB
  • FFF-1167 Natura 2000 La Brenne - 144 QSO SSB
  • FFF-0057 Vallee de l'Anglin - 126 QSO SSB
  • FFF-2352 Basin de la Dordogne (campsite) - 194 QSO FT8/CW/SSB
  • FFF-2568 Vallée de la Vézère - 121 QSO CW/SSB
  • FFF-2570 Vallées des Beunes - 135 QSO CW/SSB
Eight OMs made it to all the locations: EA3EVL, EA7YT, OM1AX, ON4ON, PD7YY, S58AL, SP8LEP, YL2TQ.

DX was hard to find. Dov 4Z4DX made it a couple of times but from the other end only KD1CT made it across once and only barely so. I tried to get Chuck KO4SB in the log but there was no way - not even a CW whisper heard on both ends. Summer season in a solar minimum is not my favorite time as ham (as holiday maker though..). Luckily there was some sporadic E to create a bit of local fun with signals popping up and strong skips to specific areas.

Convenient picknick table in FFF-0057
In the shadow at a lake in FFF-1167 
Bit of walking required to get into the woods at FFF-2568
FFF-2570 was easy to activate once I found this parking area 

Thursday, July 18, 2019

Chilling in France

May and June have been rather busy. Apart from the normal daily routines there was an expedition weekend to GJ with my team in May and a special castle event I organised for the whole of June. Both brought a lot of radio fun and of course a lot of organizing and administration (logs, awards, QSLs, PR).

For a few days now I have been chilling on a campsite in France. The first stop is in the center of France and as it turns out (I did not plan this) the camping is inside the frequently activated nature reserve NP La Brenne (FFF-0031). I have put up a wire for 20m and did some data and CW yesterday. Conditions were not good judging from the activity level on CW. There was more activity on FT8 but that mode cannot capture my attention for too long.


Tomorrow I will go out portable to activate two nature reserves in the vicinity that have seen little activity: Natura 2000 area of Brenne (FFF-1167) and Vallée de l'Anglin et affluents (FFF-0057).

This weekend we will be moving further south to the Dordogne for 2 more weeks of camping. I will again be inside a nature reserve (again a nice surprise) and this time it is a new one: Bassin de Dordogne (FFF-2352).

I expect I will go out /P from there at least once, depending on how the weather develops. The first days look like it will be above 40C. This means sitting very still in the shadow and / or laying in the swimming pool the whole day.


Monday, June 10, 2019

QRO portable

Most of my QSOs I have made while out portable. At home I only have a simple antenna: a wire running from the attic window into the garden. Quite early on I found that to work interesting DX stations I had to have a better setup. At around the same time I discovered the WWFF and COTA/WCA programs. A portable journey had begun.

Why bother about the setup?
My radio time is rather limited. This is one of the reasons I want to make the most out of the trips I undertake. The other reason is that I like to give chasers all over the world a chance to collect references in the (worldwide) award programs I participate in as activator. 

Antennas
Trying many antennas and setups I moved from simple wire antennas via a home made cobweb to the folding hexbeam. That one still is my favourite DX antenna. I use that one if I have the time and know there is enough room to set it up. For low bands I use verticals, a c-pole (40m), delta loop (40m) and dipoles (center and end fed). 
For ease of deployment I have lately started using a linked dipole in inverted V configuration for 20-80m. I am quite pleased with the performance and the ease of changing bands.

Masts
With antennas you are faced with the next challenge: height. I started out with an extended Spieth mast (14m but very thin top) and Spiderbeam 12m mast. Fine for end fed's (vertical / sloping) or high band dipoles but once you get to 40m and below you want more height. So I moved to 18m and later even 26m Spiderbeam masts. The 18m version is the one I take out by default. I added some features to make it easy to deploy on your own in the field.

Power - applied and transmitted 
Last but not least there is the question of power. I moved to LiPo and LiFePO4 batteries for my radio's years ago. The capacity / weight ratio is unbeatable. With LiPo's you can run 100w for hours with little added weight.
Moving towards the solar minimum I was looking for a bit more TX power. I started with a cheap RM Italy amp and then moved to the Ameritron ALS500m. It provides a max output of 400w - which is exactly what you are allowed in PA.
I purchased a lead acid battery of 145Ah to power that amp - with the idea that this would allow full day operations (like when I am on expedition with my team YNOMY). However this has two downsides: the battery is *very* heavy and it only supplies 12v or even less under load. At that voltage the amp - designed for 14Vdc - is putting out probably something like 250w.
For a while I looked into voltage booster solutions but I did not manage to build something that was practical and reliable at the same time.

By the end of 2018 LiPo's had become far less expensive than when I started buying them and I had collected a few already (sunk costs). So I decided to see if I could power the amp with LiPo's. The big advantages being that the amp would run at the designed 14v with far less battery weight.

In preparation of the YNOMY GJFF expedition I built three extra batteries from individual LiPo cells I bought in China. During the expedition we have run the amp for two days on LiPo's and the radios on LiFePO4's, using the 145Ah lead acid battery as recharging unit. This worked brilliantly.


HobbyKing 16Ah LiPo, DIY 20Ah LiPo and DIY 20Ah LiFePO4

The capacity required to run the amp for a given period of time depends on a number of variables, like the mode used and how much you transmit during that time. A couple of portable activities have learnt me that I need one LiPo battery (16/20Ah) per 90 minutes of SSB activity. 
In GJ we had four 16/20Ah LiPo's and when we drained one, we recharged it from the Lead acid battery (using a balanced charger). In the end we never drained all batteries as we had a recharged battery ready when we drained the next.

Note that with the Ameritron amp you can choose two approaches. The standard power leads consist of 4 wires (2+ and 2-). This means you can attach two LiPo's and run them in parallel. This is a way to extend your operation without needing to switch batteries in between. I chose a different approach. I left the original (longer) leads and added a short extra power lead (fused). The wires are just long enough to rest the battery on top of the amp.

[update 2020: I built a 5 cell in serial LiFePO4 battery for the amp]

Beware of low voltage
It is important to keep an eye on the voltage level of your batteries if you intend to use them more than once. You can buy battery alarms that monitor each cell in the battery. They will give off an alarm you cannot miss (think of fire alarms in your house) once a cell reaches a set minimum. I recommend you always have an alarm attached while using a LiPo / LiFePO4 battery.
For LiPo's in general 3.2v is used as a safe lower limit per cell. I think it is conservative and in this particular case too conservative as the current drain is high. This means that the cells will show a voltage dip from which they will bounce back a bit once you disconnect the battery. I therefore use 3v as the cell minimum for the LiPo's.
The LiFePO4 cells can go a lot lower. I set the alarm for 2.5v per cell - still quite conservative.

This setup is effective. Apart from direct experience (hardly scientific) I do once in a while get a chance to compare my results with other stations out in the field on the same day. As PAFF and COTA-PA coordinator I receive a lot of /P activity reports and logs. 99% of the time I was not out myself but the times I was, there was bound to be someone else out as well. In those cases the difference shows both in QSO rates as well as in distance covered.
This setup is also bulky. Last time I had to walk quite a distance in the sun with the radio, the 18m mast, the amp, batteries, antennas, chair, food and drink, and it was killing. Transport-wise there are still a few improvements I can and plan to make.

Lots of heavy stuff!