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The 15 minute Field Day Setup
David Kanitra (WB2AZE)
on
June 26, 2001
View comments about this article!
The
15 minute Field Day setup..... by WB2AZE
My
good friend and I were discussing Field Day a few years back. It was our
weekly meeting at the local diner, a place where everything tasted like
cardboard, but it was a great place to plan field day. We both seemed to agree
that the hardest part of field day, was not the operating, but the setting up
of all the equipment. I then told him that I had the solution to all our
problems, a complete FD station that was set up in 15 minutes. He looked at me
and said You're going to use your 2m HT. No, I replied. He thought for another
minute and said let me guess, you're going to use CW right?. Wrong, it's
going to be Sideband. He was totally confused now, QRP with a dipole.
Nope, 50 watts and a 5 band vertical antenna. You're kidding he said, No I am
not was my reply. I showed him part 1. of the WB2AZE 15 minute Field day
setup. My friends eyes were wide open.
The
station itself consists of a Ten-Tec 555 Scout transceiver, MFJ antenna tuner
with SWR meter, a 12 volt 7.0 A/H gellcell battery, coax jumper cables, Key,
mike, logbook,pen, and 3 ten-tec band modules. The entire setup, was neatly
stored in a business sized expandable attaché case.
Part
2 of the setup consisted of the antenna. I chose the Hygain 18-AVT 5 band
vertical antenna that could be set up in a matter of minutes. For the antenna
mount I used an outside Stadium Lamp stand. Two 35 pound barbell weights were
placed on the legs of the stand to keep the antenna from falling down. **
Note, if you cannot find weights, a couple of large bags filled with sand will
also work. Four radials were cut to about 35 feet in length and clipped on
with alligator clips. I chose 18 gauge orange colored wire to make the radials
stand out (for finding them, and to prevent tripping over them). The distance
between the traps were the tubes came together were then marked with bright
colored electrical tape.
The
standard locking clamps that originally came with the antenna were replaced
with standard automobile type hose clamps. All that had to be done, was to
slip the pieces of the antenna together against the electrical tape, and then
tighten the clamps. For safety reasons I did the following. About 3 feet up, I
attached a nylon tie wrap that I used to hook one of the glow in the dark
light sticks. Those are the disposable plastic lights that you bend and shake
to produce a glow that lasts for hours and come in different shades of green.
This avoided the hazard of walking into your antenna at night. Two 25 foot
pieces of RG-58 Coax and some connectors completed the set. (Fig 2)
Does
it work, my friend asked?,. Yes, I tested it last week, the SWR was a little
high on 40 but I got it down to 2.3 to 1 with the tuner. What about a computer
and a tent, he asked? No tent, I'll use the car, and no computer either,
that's what the pen and log books are for, didn't you ever hear of roughing
it, they didn't have computers back in the 50s and 60s and they still had
field day. He was absolutely amazed. I asked him do you want to see it in
action? Oh Yes was his reply. We then went back to my house, and I started to
set everything up. The antenna was set up first. The weights were set down on
the stand. Next came the radials. 4 of them were clamped to the base with
their alligator clips. Next came the feed line. I used 2 25 foot lengths and
ran them to the car. I took the `station attaché case' and hooked the coax to
the tuner. A jumper then went to the rig. The power leads were hooked to be
battery. We were up and running in 15 minutes...
How
long will the battery last? A couple of hours at the most, but then I have
another to replace it, it just doesn't fit in the case. We just stood there
looking at it....Oh, by the way, the best part about it....it only takes 15
minutes to take it down too!!!!
***
Operators note, I worked the West Coast from Central NJ using the above setup
with a modest 50 watts.
Not
only can it be used for FD but also for RACES or ARES too ***
-
Ten-Tec
Scout Transceiver...available from Ten-Tec 1-800-833-7373.
-
MFJ
tuners....available from MFJ Enterprises 1-800-647-1800
-
Expandable
Attaché case was obtained from a local Office Max .
-
Gel
Cell Batteries were purchased from a Hamfest. (I have a similar battery in
my computer UPS.)
-
Hygain
18 AVT is available thru dealers advertising in QST.
-
Coax,
connectors, alligator clips, wire and electrical tape are available from
any Radio Shack store.
-
Barbells
can be purchased at sporting goods stores.
-
Glow
in the dark light sticks are available from camping/sporting stores.
-
Stadium
light stands were purchased from a garage sale.
This article has expired. No more comments may be added.
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The 15 minute Field Day Setup
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by KE4SKY on June 26, 2001
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I liked the article about the simple field day set-up. Its extreme portability does have obvious application for ARES / RACES, but I'd like to add a few recommendations to improve the utility of this setup for EmCom.
First is the battery. A 7.0ah battery is fine for operating an HT for ARES / RACES, but as was pointed out, it's inadequate for running HF equipment for more than an hour or two. Virginia ARES / RACES recommends that as a general rule, auxiliary battery capacity should be not less than 1 amp/hour for each watt of transmitter output. This assumes a moderate operating duty cycle not to exceed 25% over 12 hours.
For a typical contest duty cycle over Field Day event or use as a net control for ARES / RACES operations I'd recommend not less than a BCI Group 27 (96ah) battery to operate a typical HF rig. At 65 pounds, this isn't exactly backpack portable, but it provides the needed capacity. If you must "hump" your station into the bush, then a smaller Group U1 (33ah) battery weighs 26 pounds, fits into a military musette bag for transport and will run a typical portable HF rig like the FT100 or IC706 for about 8 hours, if you reduce transmitter output to 50 watts. You give up about half an S-unit on the other end to save your battery.
Most EmCom is "short path" rather than Dx, so I'd not use the vertical antenna. Instead use a wire dipole which is resonant on your working frequency or a hamstick dipole erected on a portable mast.
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The 15 minute Field Day Setup
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by KG7RS on June 26, 2001
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Mail this to a friend!
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Great article David. Here in the mountainous SW, field operating, especially at QRP levels is not just an activity for the end of June. Many folks take the rig on camping trips, picnics, etc. I personally operate mostly from the great outdoors, and have had plenty of time to work on the best quick-deploy field station. Ten-Tec's Scout is a great field radio. Antennas are usually the area that requires some ingenuity. For next year, try a dipole for each band made from a pair of "hamstick" type mobile whips. On 20-10 meters, the performance will amaze you. Get an 8-10' telescopic paint roller handle from most any hardware store for a lightweight mast. Most any light tripod will work to stand the whole antenna up...I use a camera tripod with the pan/pivot head removed. The dipole configuration is completely ground independant and the tripod requires no existing supports. If your budget allows, the Outbacker Outreach 12' vertical and Outpost tripod performs very well in the field, and allows all bands with little to carry, and 1-minute deployment. For busy conditions during Field Day, 50-watts is a good compromise between "not getting trampled" and conservation of battery life. For routine operation, 5-20 watts will perform amazingly well. An inexpensive battery arrangement is three of the common 7 amp/hr batteries connected in parallel. I used a pack like this during Field Day '96 with a TS-50 at the 50-watt level and it powered the rig all day on SSB netting 200+ contacts. If you want some real fun, look for an older laptop PC at a hamfest and get ready for some PSK-31 from the field! I have a 4 year old NEC 75mhz Pentium running Digipan. Cost of the PC was $100 at a hamfest. With 5 watts from my Elecraft K2, it's alot of fun.
Hope everybody had a great Field Day experience and happy hamming from the Great Outdoors.
73, John KG7RS, Mesa, AZ
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Simplicity = Spirit of Amateur Radio
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by K7LA on June 27, 2001
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Mail this to a friend!
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I'm glad to see someone advocate simplicity. Equipment choices are always open to debate, but the important concept is to get on the air and just work people. 7 3 de K7LA
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The 15 minute Field Day Setup
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by N2YZS on June 30, 2001
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Mail this to a friend!
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Just thought I'd add a little info on our 2 man quick setup for field day. We use 2 135 foot flattop dipoles fed with 450 ladder line for multiband operation. Poles are the Radio shack variety (10' lengths). Center is 25';, and ends are 20'. We drive 3 metal fenceposts into the ground at appropriate lengths, stand the poles up against them and hose clamp them to the fence posts. No guys needed for this setup. We then hoist the antenna. Total erection time for the antennas is about 10-15 minutes apiece. Use a "flea market" type shelter that can be erected in less than 20 minutes and provides rain and sun protection. Admittedly, tear down time is a little longer, but not that long. With two people working at it, an hour is reasonable. All the equipment can be hauled on one 1/2 ton pickup, including the generator. Quick setup, multiband operation, shelter in a minimum of time. This equipment is set aside for just that use, so if an emergency acually did occur, we could duplicate the times and have the station up and running in the least time possible. Just a note: the 135' dipoles with 450 ohm ladder line work especially well. They are home brews and we have used them for 2 years now with the greatest sucess. Just roll them up when you are done, and hang them on the wall. Hope this gives a little help to others. 73 N2YZS
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The 15 minute Field Day Setup
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by NN7B on July 1, 2001
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Mail this to a friend!
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Hi Dave - that was a fun article. There are several ways of putting a simple, portable station on the air as a couple have suggested. That vertical makes a good field day antenna with the low angle of radiation. The NVIS set up dipole is great for working station within about a 150 mile radius since it has a high angle of radiation. It doesn't make for a lot of field day contacts but, it serves the purpose for EmCom work.
Thanks for a sharing your field day setup - Paul, NN7B
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The 15 minute Field Day Setup
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by VK3YE on July 2, 2001
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Mail this to a friend!
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A good article. I use an FT-817 and 7AH gel battery
now. Also use a telescoping pole 9m long and 20m
wire with homebrew L-match.
Best DX was working a mobile stn in Toronto with 5
watts on 20 metres. Several US contacts followed.
Further info appears at
http://www.alphalink.com.au/~parkerp/project.htm
Peter
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