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| Feel free to send us any photos you think may be of interest to other members of the Sandbox Net. Be sure to include a little description or story that goes with it. Subject matter does not have to be Ham related. Also check out our Member Profile section and if you would like your photos to be included in that section instead of this one, that is no problem. |
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This photo was received via email from Edil,CO8KL of Santiago de Cuba,
Cuba. It was taken this past winter (1998)during the visit of several VE3
friends of Edil's in Cuba.
From left to right : Greg VE3NXB, Victor CO8HF,Gord VE3NQK, CO8OT, Edil CO8KL, Don VE3ESE and the young fella in the front is Edil Jr. a future HAM according to Edil. |
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This photo was taken at the Oldtimers Picnic in Orillia,
Ontario on June 19, 1997. That's Chris, Ted's (VE3DXG) xyl, checking
out a Model T Ford to see if a screwdriver antenna could be mounted and
where a TS50 would fit!
Just a great time and had " eye ball qso's " with dozens of hams face to face for the first time, as well as many others we met at other picnics previously. |
Thought I would display a few photos of some mobile antenna installations
that I have come across.
As an avid mobile operator, I am always checking out mobile antenna's
to see what makes them tick!
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Here we have something that is very unique!
It is a ScrewdriverAntenna that has been completely encased in PVC pipe and could be referred to as " The Plumber's Delight " The Screwdriver design was that of the early versions
where two capacitors and the two associated switching relays were required
to provide proper loading for the antenna on 80 and 40 meters. Frequencies
above 40 did not need the capacitors and they were
switched out of the circuit. The large section at the bottom (circular
opening ) contained the capacitors and switching relays. Rather a novel
way of ensuring that the capacitors and relays stayed dry and free of the
usual crud that develops during mobile operations.
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This is the aluminum version of the
Screwdriver antenna, with toroid and screwdriver motor installed inside
the base.
The contacts for this antenna are inside the machined collar and are not exposed to the weather like they were on my original design using copper pipe and finger stock. This antenna is very light compared to the copper one and has been trouble free. The antenna slides on to a tapered stud at the bottom of the mount. To remove it takes less than 30 seconds, pull apart a 3 conductor plug, then with a slight twisting motion lift the antenna out of its bracket. Of all the antennas used over the years this one is without a doubt, the best there is. It out performs all antennas except a single band unit with a large high Q coil. It can be resonated at any frequency between 80 and 10 meters, does not require a tuner and all from inside the vehicle travelling at highway speeds. The antenna is known as the BIG DK3 HF Mobile Antenna designed by Don Johnson W6AAQ. If you are serious about mobile antennas, get Don's book, 40 + 5 YEARS of HF MOBILEERING |
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Here we see the famous Webster Band Spanner all
band mobile antenna . This antenna used a sliding whip that had a contact
at the bottom end which slid inside the coil making contact with the turns
as it was adjusted either up or down. A knurled collar tightened the whip
into any position one desired. Marks were placed at varying
intervals on the whip corresponding to the band required. Precise resonance on your frequency of choice was fairly easy to accomplish once you were familiar with it. You will note that Frank VE3FJH, is holding one that
has an enlarged section at the bottom ! This one got broken
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