Ham since 1979,ex OH2LPQ and OH5IS
Read below for DX trips
- PJ7/OH2IS -Sint Maarten (2/2017)
- OH0/OH2IS - Aland Islands (8/2016)
- 9A/OH2IS- Fazan, Croatia (7/2016)
- V26IS - Antigua & Barbuda (2-3/2016)
- 9A/OH2IS Vis Island, Croatia (7/2015)
- KH6/OH2ISMaui, Hawaii(2/2015)
Hi, and welcome to my page on QRZ.COM. Since you are reading this, most probably we have had a contact andI am happy to have worked You!
Im a member of NCDXF since 1982 and Finnish Radio Amateur League SRAL since 1979. Holder of WAJA and DXCC awards, I recently became active again chasing new ones. I enjoyCW contesting every chance I get, and just working the world any given day, especially with a homebrew antenna,is enough to make me smile. Starting 2015, as work permits, Ill be on the air around the world every time I can take my radios with me.
Permanent QTH in Espoo and secondary QTH in Salo
Equipment in permanent QTH (Espoo)
Equipment at Summer Cottage (Salo)
ACOM 1000 tube linear
Cushcraft A3S 3-ele tribander beam up 12m for 10, 15 and 20M bands
Inverted V for 17/12M WARC bands
Palstar HF-Auto 1800W Tuner
Icom IC-251A 2M multimode
30M (95 ft) high tower with Optibeam 40/30 2-element yagi and Cushcraft X7 20/15/10 tribander
JUMA PA1000 1KW Solid State amplifier
Assorted electronics to remote the station from home QTH - remoterig configured as Yaesu pair, rotator control, amp control etc via 4G internet link
Current QSL cards - let me know which one you would prefer when QSLing, "Summer" or "Winter".
DX TripsCheck the QSOsand request QSL cards for theKH6/OH2ISDX Trip between 19. - 26.2.2015athttps://secure.clublog.org/logsearch/KH6/OH2IS. Or find your contacts on LOTW.All direct & Buro cards sent. There are still some left,use OQRS if you need one.
Summer 2015 trip was to the beautiful Island of Vis, Croatia as 9A/OH2IS, IOTA EU-016,July 5. - 14. 2015. Please ask for a card separately if you need one from this trip.
Winter 2016 DX trip was toAntigua and Barbuda in February - March2016, with Callsign V26IS. Over 3000 QSOs in 10 days along holidaying in Dickenson Bay, St. Johns, Antigua. OQRS active at https://secure.clublog.org/logsearch/V26IS. All direct requests will be responded to within days. If you need a card, please use OQRS - it is quick and easy!
Summer 2016 trips were to Pula, Crotia in July and Aland Islands in early August. In Pula, we were in a village called Fazan, about 4km from Pula, on the continent, not on any island.
In Aland Islands, the QTH was in dkarby (Hjort) by the seaside - this was mostly vacationing with family, but I did manage to log over 1000 QSOs in a week - you can get a card via OQRS for OH0/OH2IS. I also testedseveral vertical antennas:
-80M inverted L (could not get it to work due to lack of space, had to settle for a center-loaded 40M GP on 80), 40M full-size GP, 20M rectangular vertical full-size loop among others, in view of using these later in other locations when traveling with DX in mind
- a new real-time logging facility which is based on an extension to N1MM combined with an Azure-based cloud component which then outputs the QSOs to end destinations like clublog, LOTW etc, in addition providing a real-time website. For the time being, the website portion is not up yet, so I am testing a real-time output to clublog - check it out on the QRZ page for OH0/OH2IS and let me know how that worked for you!
In February 2017 we took a week off in Sint Maarten, PJ7, staying in Philipsburg on the hill of Point Blanche, overlooking the cruise ship harbour on the Dutch side of the Island. This place had a great takeoff to US and EU, basically also JA/VK but those were few in the log compared to Antigua a year ago - guess propagation is down from last February. I brought a solid state amp for the first time with me, you could tell the difference all right! Hope you had fun working PJ7/OH2IS on any band between 80M and 17M - I sure had fun running the pileups! Check out QSL options from the PJ7/OH2IS QRZ.COM page.
Summer is a great time to surprise your neighbours with a new antenna or two! I have built my share of experiments during the past couple of years, mainly to discover what would be the ideal DX Pedition kit if you limit yourself to stuff you build yourself out of some very basic materials, like wire, telescoping fiberglass poles and guy wires out of nylon. The majority of antennas I have tried are vertical, simply because of conditions often encountered when traveling: limited space, hard to find high supports for horisontal antennas. Here are some results, no claims of any scientific accuracy, simply my own impressions backed up with some A/B comparisons to the permanent stuff at my QTH. For measurement and tuning, I use a SARK-110 analyser, which is really quite excellent and reverse beacon network for transmit tests. To date, I have put up
Multiband wire antennas fed with window line:
- Vertical Delta loops cut for 20M and 30M bands - generally you can work anything you hear, and needs just one supporting pole. A/B comparison to a good 30M full size vertical with elevated radials gives results where the delta loop is generally down by a few dB, but very easy to listen to compared tothe vertical. Worked some interesting DX on the test loop, which doesnt really prove anything but is a nice verification that the loop does not have to be high above the ground to get all continents in 10 minutes on a spring evening when conditions are favourable - and log stuff like Spratly Islands on the fly.
- Vertical Rectangular loops for the same bands, fed from the corner closest to your shack. This is my current favourite pedition wire antenna, hears well and is multiband when fed with window line. Takes some experimentation to find the right mechanical construction to make the loop form well to a nice rectangular shape, given that most travel-sized fiberglass poles are quite flimsy at the top and you need a good length, like 8M or 10M pole to get a 30M rectangular loop high enough from any especially metallic obstructionsto work well. My latest product uses rotating pulleys to ensure that the wire gets tightened evenly, side-guyed poles with some nylon string, all fed with a 450 Ohmwindow line to a balanced tuner. I worked 3000+ contacts with such a full-wave loop cut for 20M band from Antigua & Barbuda in March 2016, including hundreds of VK/ZL/JA and quite a few QRP stations from Europe, with my max power out being 200W. I used the one and same loop from 40M to 10M, with most QSOs on 30M and 17M bands - antenna wasnt resonant on either! Heres my loop at V26IS station:
- Helically shortened verticals for 30M and 40M, with inverted-L sections to go to 80M. These work surprisingly well provided you dont shorten the antenna too drastically, about 30% shortening by winding helically seems to work almost as well asa full-length vertical. I have A/Btested this by comparisons to my fixed 40M vertical from DX Engineering. On 40M, the helical vertical is down bya few dB, sometimes not at all compared to the full-size aluminium tube vertical with elevated radials.On 80M, a coil-loaded full-size40M vertical or a helically shortened 40M vertical with an L-section of 10M to make it work on 80M give about the same, albeit probably modest performance. However, the vertical + inverted-L kit weighs very little and can be put up at most dx pedition locations to get you to 80M. It compares pretty well to a full wave vertical loop cut for 30M band forced to work on 80M - another antenna that shouldnt really work much, but situate it well and it gets the job done, if you leave the coax cable at home and use balanced line to feed it.
- Vertical dipole, fed with window line for multibanding purposes. Works, but not too great an experience - perhaps this antenna really should be situated by saltwater? Get a high-power 4:1 balun to terminate the window line and feed with coax at the tuner end, or get a real balanced tuner if you can find one. Appears to be a tougher match than a loop when tuning from 40..10M, especially higher bands heat the matching network/balun, probably most of the power going into the wrong place... Just thinking about all those "vertical dipole" adverts which require "no radials", "low take-off angle" etc - certainly tough to make itwork well on more than one band in my experience, at least with a simple feeding arrangement, no traps, no capacity hats etc. I guess Ill stick to horizontal dipoles.
Resonant wire antennas for one band (or one band per wire... or two...)
- VDA for 17M. This was actually the first experimental antenna that measured better than the permanent 17M inverted-V, by a measure of 3..6 dB in A/B testing through reverse beacon network. Impressive F/B and wide beamwidth, and I am 10km from the seashore so probably no beneficial salt water effect :-) However, my permanent QTH in Finland is actually an ancient seabed which has dried out after the last ice age, pretty silty ground which might be not so bad for verticals in general, perhaps the VDA benefits from this. Certainly a great antenna, but sadly you need a forest of them to work multiband, and they get really tall really fast. Still, it is a light directional vertical antenna not to be discounted easily if you can bring the parts for several of these to your trip, for 20M and up.
- Multiple Dipole Array (fancy name for a fan dipole!). In preparation for my next trip to PJ7 I put up a horizontal three band fan dipole, fed from a common balun-supplied feedpoint, cut for 30, 20 and 17M. I figured I can do 10 and 12 with the 30M dipole and 15 with the 40M GP. Now, there is something to be said for a resonant, coax-fed balanced dipole up more than 1/2 wavelength! No wonder it is one of the most common antennas. Of course, if lacking suitable trees or other structures for support, one needs 3 fiberglass poles to support this thing, one for the feedpoint, two for the dipole ends. Luckily, great figerglass masts are available from several sources like Spiderbeam. I got three 12M poles and got this thing up - it actually puts out a decent signal on the resonant bands, compared to the 3-element A3S from Cushcraft which is my permanent DX antenna for 20, 15 and 10M bands. Comparing with reverse beacon network, I got results within 3..6 dB of the beam in the favorable direction of the dipole array and the beam. Listening is not as easy as with a 3-element yagi, but still, with a modern receiver, quite a small difference. I might need to put this up on my next trip, if I bring a linear along - after all, it is so much easier to get the power to the antenna if it is resonant on the band, no tuner (or very little) required. The drawback is that decent fiberglass poles are abt 4 feet (1.2M) collapsed, so I need to take an extra piece of checked luggage to get the supports to travel.
- Top-loaded 80M vertical. I made this out of the 12M Spiderbeam pole, varying the capacitance hat design - settled for a hat which was basically 2 lenghts of approx. 6M of wire in an inverted-V, "whiskers" configuration, and a radiating wire of 11M. With just 4 ground radials, this appeared to resonate well and proved to outperform a full-sized 40M aluminium vertical bottom-loaded with a coil by a large margin (more than 10dB)in most directions, apart from the direction of the single elevated 80M radial in the aluminium vertical setup - that one was down only a couple of dB. Very easy to tune although of course not covering the whole band at once. For a traveling 80M antenna, this is by far the best so far, but it does take up some space to accommodate for the capacitance hat wire supports. I made an ugly balun wound of rg-58 on a temporary support of a balvenie cardboard box.
Now, what should I put up next? Suggestions are welcome.
Meanwhile, see you on the HF bands!