Several of the people involved in planning for the VWS field day event came over to my house on Wednesday evening to brainstorm about antennas and setup for the 80/20cw station. By the end of the evening, we had run through quite a few possible configurations, some fancier than others, but in the end we decided to use two dipole antennas. I’ve updated the map showing the layout. Ian’s Buckmaster OCF dipole will run roughly East/West, between ropes suspended from the tree at the top of the hill next to the 80/20 SSB station, and to a tree across the road on the other end. To help support the antenna, a 40′ double-guyed pole will be positioned near the 80/20cw tent. The same pole will also support one end of a multiband dipole oriented more or less North/South. Between the two antennas, we should have broad coverage (10-80m on the OCF, and 40/20/15/10 on the multiband).
It’s about two weeks until Field Day. I’m captain of the 80/20 cw station, and I’m trying to pull together plans for the station. The club has done this event many times in the past, and there is plenty of experience to tap into, which is good, since this is my first time running anything at Field Day. Pete K6BFA is the top boss for the event, but there are a large number of people involved in logistics. A large chunk of the planning took place last month during a walk-through at the site, Burke Lake Park (see map of proposed station locations and antenna deployment). Due to work commitments, I was out of the area on that day, and on every weekend since then. Earlier today, I had a chance to scope out the site for myself. Tomorrow night, I’ve invited people who have signed up to work the station during the contest plus a few members of the planning committee over to my house to talk about antennas for the 80/20cw station, but I wanted to get the lay of the land before the meeting.
The present plan is relatively limited — to run a long wire antenna from a mast near the 80/20 station to a tall tree. It sounds like this would be reasonable for the 80m, although maybe not optimally high near the station end. I’m not sure it would work well for 20m. We have a number of other antennas available to us, plus a push-up 40-foot mast. Also, the station is near the spider beam, which is designated for the ssb station, but perhaps could be shared (?). In pow-wowing about antennas tomorrow night, my goals are:
- Put up a single and reliable antenna so we are ready to go when FD starts.
- Not interfere with the other stations.
- Lay out a strategy for best use of our resources at different times during FD.
- Incorporate any experimental suggestions that are not likely to interfere with #1-3.
I went to the site of the 80/20 station, and spun around, capturing the landscape around the site with my cell phone’s camera. The site is a bit lower then the surrounding area, and there is a slight grade upwards to the west. I am initially facing west. At 0:03 seconds, facing the non-40SSB. At 0:06, facing 40/15SSB support tree. At 0:09, facing the tall tree planned to support? the 80/20. Another potential support tree is masked in background at around 0:11 seconds.
I also took some still photos, thinking about trees that might make good antenna supports. Starting with the current plan, there is a really tall oak tree just across the road to the East, in the direction of the minigolf course. We could use a 40 foot mast towards the station end to give it some height. I counted 132 paces over to the tree, so something like 130 meters. According to the layout picture on google maps, the antenna is about 160 feet, and the support rope about 185 feet (but considerably longer in practice, since it has to go up to the top of the tree and the antenna wire will slope upwards, so not all of its run will contribute to the horizontal distance).
The advantage of this layout is that it should be dead simple to set up. An ICOM AH-4 antenna tuner would be at the tent, tied to a ground, and the single long wire would run up to the mast and then over to the tree.
A number of people have volunteers other antennas for the effort as well, including Ian N0IMB’s Buckmaster OCF dipole, my G5RV, or Byron W4SSY’s 80/20 fan dipole. Of these, the fan dipole may be the most attractive because it is resonant, and perhaps to least likely to interfere with other nearby stations. The difficulty with these antennas is getting the feed point near the 80/20 station.
The other end of a dipole could be suspended from the large tree just up the hill from the station. According to the site layout, this tree would also support an antenna for the non-40 ssb station. The tree could be used to support a rope, so the two antennas would not be so near each other. Additionally, the two antennas would be near right angles to each other. This end of the antenna would also be near the spiderpole, though, so perhaps that would be a problem.
Looking eastward from the site of the non-40 ssb station, the “long wire” tree is to the left, and the tree proposed as the other end of the dipole is on the right in the background. Closer, the trees on the right are the site for the 80/20 cw station, so the dipole would run in a straight line past the station, requiring a 50-100 foot feedline if we played it right with the ropes on each end.
In addition to these antennas, Byron has volunteers the use of his 20-meter Moxon, which has been used several previous times at Field Day. John K4US has also made available a 40 foot push-up mast. We’ll have to figure out how to best use all of this equipment tomorrow night.
Guess I should get some soda and chips for tomorrow night…
I could say that we selected Rocky Gap State Park (78.65061 W, 39.71315 N) for Memorial Day camping because I knew I would be running a rock-bound transceiver in a QRP contest, but the truth is that as usual we waited until the last minute to make camping reservations, and there weren’t many choices for state parks within a three hours drive of Washington, DC. Despite the last minute preparations, the camping went off without a hitch (literally, since we shoved everything in the back of one car).
We left early on Saturday morning, had tents up by around noon, and I then spent some time entertaining the neighbors by throwing soda bottles with strings into the high trees. In appreciation, they turned up their country music, which was much appreciated, but not by me.
This was the CQ WW WPX CW contest weekend, so I knew there would be a ton of activity, with a good chance to be heard internationally. For that contest, I brought the TenTec 1320, and ran its ~ 5W into a longwire antenna through my Hendricks SLT+ antenna matcher. That rig only tunes 20m (~14.003 to 14.073), so I was limited to daylight plus a bit. With other camping activities going on, I periodically sampled the band to see what propagation paths were open. I was using a straight key as I don’t have my keyers on hand, but it wasn’t too bad since I wasn’t calling CQ much with such a peashooter station. Logging was performed in the classic style: paper and pen, with a lot of page flipping to avoid dupes.
The late afternoon/early evening both days was my best time. I logged 31 contacts, with DX to Aruba, Canada, France, Germany, Italy, Martinique, Spain, and Venezuela.
The CQ contest was over at 20:00 local time on Sunday, just in time for the ARCI Hoot Owl Sprint to begin. I had brought the 40m rockmite for this contest, since the contest offers bonuses both for QRPp operation and field operation. With the large membership of the ARCI potentially listening, I thought I might have a chance to be heard by someone.
I started at 20:00 EDT (00:00 Z) and stayed at it for 3 and a half hours, before I decided to walk down to the lake and stare at the clear night sky for a while. The rockmite has a built-in picokeyer, so I was able to use my Bencher BY-1 paddles, which was a good thing since I was somewhat zombified that late in the evening after a good night’s sleep on hard ground the night before.
Not only did I log some radio contacts, but I also was visited by many species of insects, who were attracted to the coleman lantern providing light for the log book. In fact, one unlucky bug is a permanent addition to the logbook itself.
In all, I logged nine contacts in six states (MI, NC, NJ, NY, OH, and VA). Five of these contacts were with ARCI members, who gave their member number in exchange, the rest sent me their power, some QRP, some not. I assume for the purposes of the contest in terms of my score, my power matters, but not theirs. Because I was operating on the rockmite at 500 mW output, my score got a 10x multiplier. Even more helpful, I got an additional 5000 points for operating portable (a bonus ~3x bigger than my score itself).
Operating with the Rockmite takes some patience, as the bandpass is large enough to hear many simultaneous conversations. When stations reply, it can be hard to tell if they are zero beat or not, particularly if they send just their call rather than “ai4sv de mycall mycall”. Infrequently, I also had a touch of broadcast band interference, which faded in and out, and was always too tenuous to pick out specific spoken words.
Rocky Gap State Park was not chosen based on its potential as a contest location, but it worked well as one. The park elevation is about 1200 feet, and we were in site 182, which is at the far end of one loop, at the top of a hill, and surrounded by woods. Our site did not have electrical feeds, which further reduced the noise. The entire site is in a valley, however, with taller hills to the east and west, so some low angle radiation may not have passed.
I would certainly consider Rocky Gap again for family camping, but I have my eye on some sites that are both closer and more elevated, for instance in West Viriginia, Black Water Falls (elevation 2897 feet) or Pipestem Resort (elevation 2690 feet, plus it has the word “Resort” in the name).
We interrupt coverage of Operation Sizzling Pork for this brief mention of last night’s NAQCC sprint, which turned out much better than I would have had any reason to expect. This is a monthly two-hour QRP sprint in which I have participated a half dozen times, usually netting only a few contacts. When I got home from work last night, I remembered the sprint, but was not very optimistic: both main rigs, the antenna tuner, and my keyers are in Indiana, plus a thunderstorm was predicted for prime operating time that evening. However, by the end of the contest, I had made more QSOs than ever before.
With the vintage Collins gear still out for repairs, I had two choices: my 40m rockmite (550 mW) or my ~4W TenTec 1320. The rockmite seemed a bit light for my purposes, so I went with the TenTec. There was one problem, though: the stealth vertical in the backyard is not resonant on 20m, the TenTec’s only band. As of last month, our attic has a newly installed floor, so I strung up a simple dipole from the rafters. I used the former “Belgian Vinegar” antenna, and shorted the radiating wires to sixteen feet, seven inches (calculated for resonance on 14.060). The BVA was basically a dipole center connector plus a gallon vinegar jug wrapped with coax to make an air-core current choke. I wasn’t worried about RF running down the cable in the current installation, so I uncoiled the coax and discarded the vinegar jug. I had used this antenna for two years in Belgium, and during one contest when I operated from Mount Vernon, NY.
I didn’t attempt to run coax down to the basement, but just down through the trap door and into the bed room, where I borrowed my wife’s computer desk. Her iMac was temporarily pushed to the side to make room for the station. I did not have an antenna analyzer or VNA, but I did have a power meter that measured forward/reverse power, so in the fifteen minutes before the event, I trimmed the antenna old school, calculating the vSWR. I got it down to about 1.8:1, and figured that was good enough. I was sweaty and itchy from fiberglass and didn’t want to mess anything up right before the contest, so I left well enough alone. With a 25 foot cable, I figured there wasn’t enough power loss to worry about, even at QRP.
Out the window, I could see lightning flashes, and under ordinary conditions, I would not have used the outdoor vertical. However, given that the dipole is indoors and lower than the various metal projections on my roof, I figured I was okay working through the storm. Loud static crashes interrupted work all evening. After each crash, the radio’s AGC would kick in and I’d be deaf for a couple of seconds as sensitivity recovered. Despite the QRN, reception was fantastic on 20m.
I worked eastern and central North American stations in the first half of the contest, as with the vertical antenna, Minnesota and Texas came in particularly well. Around 01:20Z, propagation went long, favoring western stations, particularly Oregon. I was pleased to work NAQCC members in both Canada (Saskatchewan) and Cuba during the contest.
In all, I had 17 QSOs, although I noted that the last one was a repeat, probably trying to be sure that I had copied him correctly on the earlier exchange, so I can say that I have 16 QSOs that count towards a score. All of my contacts were with members, so 2 points each, and made using a straight telegraph key, so a 2x multiplier. I think I did pretty well this week both in absolute score and likely in relative score since I presume that some of the heavy hitters were on the road to attend the Dayton Hamvention.
I was impressed by the performance of the attic dipole, which was refreshingly free of man made noise, versus my usual operation on the lower bands with the vertical antenna. Over the summer, I am hoping to refine the attic installation and make it permanent, routing the wires down to the station in the basement.
We went into Operation Sizzling Pork with the intention of having a good time (as we did, see Ben’s photos), rather than as an all out contest. This was something of a shake down cruise with a lot of firsts — it was the first time Ben had worked a contest larger than a sprint, the first time Tymme had operated on HF, and the first time we had tried to pull together this sort of outing. We had some modest, if arbitrary goals, which we came up with the night before the contest while feasting on pork ribs at Squealers Barbeque Restaurant. We decided that if we made 100 voice and 100 cw contacts we would be happy. As our log showed, we hit those numbers and then some:
Band Mode QSOs Pts Sec 3.5 CW 71 142 14 3.5 LSB 21 21 5 7 CW 61 122 26 7 LSB 54 54 33 14 CW 37 74 21 14 USB 38 38 12 21 CW 14 28 1 21 USB 10 10 2 Total Both 306 489 114 Score: 55,746
So, everything above our goal was gravy, but it’s still worth a little post-event analysis since next time we might want to enter on a more competitive footing.
What worked well:
- Logistics. We actually managed to get both materials and personnel to the right location, with some time to spare. Flights, rental car, UPS ground transport. Antennas went up the day before, and the stations went on the air as soon as the contest started. Not bad for a first time effort.
- Tymme’s patent-pending arborist slingshot. Antennas (green) went up more than sixty feet, and almost always on the first try. As expected, our actual station (numbered positions) and antenna deployment did not match up with our planned layout (detailed in an earlier post). We had anticipated station a station near the north east corner of the house, but those windows do not open, and the power lines (red) come in on that corner, so we shuffled around. As much as the aerial photos helped with antenna planning, actually seeing where the trees were was another story. We put the NVIS buddipole in the front yard (north, elevated 3~5m), and oriented the low Alpha-Delta DX-EE (elevated ~8m) at right angles to it, between Tymme’s house and garage. The two G5RVs were hung at ~15 and ~20 meters up, also at right angles to each other.
- Multiple mode operations. Every station operated in both voice and cw mode. Most of the time, we had at least two radios going, one in voice and one in cw. Sometimes, we managed all three radios. Some RF did get into the Icom 7200, but for the most part, radios did not interfere with each other.
- Logging. A secret objective of mine was to convince Ben that the N1MM logging program was not just an ugly holdover from the DOS age, but a finely honed contesting tool. Even I was surprised, however, when we got it to work on a thrown together network consisting of Macs and PCs.
- Longer range contacts. We did not do poorly in terms of medium to long range contacts, with 39 states worked in 12 hours. The close in states were worked on 40, and we got out a bit further in the late evening on 80, but the workhorse in terms of medium and long range was 20m.
- Weather. We can’t take much credit for this — we were surrounded by thunderstorms, but they went wide of our operating position. We could hear them, but we didn’t have to suspend operations.
Where we came up short:
- We did not take full advantage of being a multi-multi, although some of this reflects conscious choices, like not using an amplifier. Since multi-multis are permitted to use spotting assistance, we could have made more use of county spotting sites, dx clusters, etc. If we had more people, putting someone on a spotting radio and/or internet duty could be helpful.
- Indiana Counties. There was no particular pattern to counties worked or not, but numerically, we could have done better in terms of counties. One strategy would be to try to track the mobile rigs more effectively, the other would be to try to maintain consistent calling frequencies on each band for people hunting for our county.
- Longer range. We had the 40m NVIS going almost all the time, and I think that ate into our use of the G5RVs for 40m operation. We probably could have picked up additional states and possibly counties by using the more elevated antenna for 40m.
- The Ring Of Deafness. I’m not sure if this is real or not, but if you look at where were did not work, it seems that there is a skip zone about 1000 km around our location. While I can imagine that the Dakotas are not well represented because nobody is there, this surely is not true of New York. Some of the New England QSO Party might have been swallowed up in this skip zone. What could we do about it? The only solution would be to change the take off angle of our antennas. Maybe it would make sense to have a vertical antenna in the mix to try to complement the coverage pattern of our high and low dipoles.
Considerations for next time:
- More bodies. With four operators, we had reasonable coverage, although there were times that we all took a break together, leaving the radios uncovered. With more people, we could operate in shifts, or double-staff each radio, with one person on the radio controls, and on the computer. Having a “spare” person to run around and fix things would also be nice.
- The least effective of our antennas was the Alpha-Delta DX-EE, which was intentionally installed low to get some NVIS effect on 40m. When we had started the event, both G5RVs were on a single switch, allowing operating position three to “rotate the beam” ninety degrees. In practice, this didn’t seem like much of an advantage for most calls, and after more than half the contest had gone by, we switched the second G5RV to operating position number one. This opened up some options for that position, and it probably would have been better to have moved it over earlier.
- A Voice keyer would be nice. Also, next year I’d suggest programming all of the keyers with the same settings: 1) “CQ INQP NN9S TEST”; 2) “CQ CQ INQP DE NN9S NN9S K”; 3) “599 MONR”.
- Better integration with the 7th Area and NE QSOP, maybe the ability to break each contact out of the log for individual submission. It would mean that we would have to copy their full county information as well. This seemed like a unnecessary level of complexity to add this year, but it wouldn’t take much more effort.
There will be more more posts on Operation Sizzling Pork, but I intend to draw it out. Later in the week: the travelogue, a how-to guide for using Macs during mutlirig contests, and some strategic analysis. Right now, however, my priority is to share the results of the contest with other teams members. I am still doing some sanity checking on the logs and making sure that no contacts were missed due to database synchronization issues, but I expect that the logs I have in hand are 99% final.
This was a 12 hour contest, from 16:00 UTC on Saturday, May 5 to 04:00 UTC on Sunday, May 6. We operated three radios, as planned using four antennas to obtain dx and local coverage. We operated under Ben’s call sign, NN9S from the Chaos Lodge in Bloomington, so our exchange was “MONR” for Monroe County, Indiana. All stations ran N1MM in a networked configuration, with the database replicated across all machines.
We logged 314 contacts, but 8 were duplicates, so 306 usable contacts. In some cases, we were able to log two entries when contacting mobile stations parked on county line boundaries.
Of the 314 contacts, 128 were phone and 186 were cw (morse code). Station 1, an icom 7200 at 100W to an Alpha-Delta DX-EE at 25 feet logged 83 contacts. Station 2, a Kenwood B2000 at 100W to two orthogonal G5RVs at 40 and 60 feet, respectively, logged 148 contacts, and station 3, a Kenwood TS-450 at 100W to a buddipole configured for 40m NVIS operation logged 83 contacts.
As predicted, 40m was the workhorse band and remained active throughout the entire event, yielding 119 contacts. 15m was strong earlier in the day, and produced 24 contacts across the country, drawing strongly on participants in the 7th Area QP event. We also had a phone and cw contact to Venezuelan stations on 15m. In the late afternoon, 20m was helpful for both national and international contacts. Tymme had a run of six Italian stations on phone from the ARI contest. The 15m band dropped off around 6 pm local time, but 20m continued into the late evening. Around this time, the New England QSO party was also in full swing, providing contacts on 20m and 40m. Around 9 pm local (01:00 UTC), we started working 80m and continued until the end of the contest, working a total of 93 contacts.
At several points during the contest, we were spotted on various clusters resulting in bursts of pileup activity. Here’s a search from DX-cluster performed earlier today:
During the contest, we did well in terms of long-range multipliers, having worked 39 states and 5 provinces. Our U.S. states included AL, AZ, AR, CA, CO, CT, DE, FL, GA, IA, ID, IL, IN, KS, KY, MA, MD, ME, MI, MN, MO, MT, NC, NH, NJ, NM, NV, OH, OR, PA, RI, TN, TX, UT, VA, VT, WA, WI, WV, and WY. The provinces included NS, QC, ON, MB and BC. We worked WB8WKQ in MI, WA3HAE in PA, and W7RN in NV four times each on various bands and both modes.
Our coverage of Indiana was more spotty, particularly in the southeast corner. Overall, we reached 35 out of 92 counties. It looks like the NVIS signal and the low multiband antenna performed well. Within Indiana, KV9X yielded four log entries, but was really two contacts spanning county lines. We worked a number of other stations three times including N9FN, N9LF, and W9LJ. Our single home county contact (MONR) was with the Indiana University station, K9IU.
Our final score will end up being something in the neighborhood of 55,000 points, which is pretty decent considering that this was a first time effort and that we are not experienced contesters.