As this adjusts the inductive loading coil to resonance, no external antenna tuner is required. Just different implementation. Selden or Edison. Save my name, email, and website in this browser for the next time I comment. Converting the motor might involve additions such as machining output shafts for antenna stability or including filter capacitors to reduce motor noise when tuning.
Screwdriver motors permit quick adjustments across the length of the antenna. These types of motors are also easily replaced if problems occur.
Many enthusiasts prefer to construct their own screwdriver antennas. They may build the antennas to their preferred frequencies and lengths. The length of an antenna is directly proportional to, or a multiple of the size wavelengths it can pick up, which affords a great variety in designs and performances. Common accessories to the screwdriver antenna include remote controllers or switches. If you have not already done some, you might consider getting a Technician level Amateur Radio license.
This would open the world of Emergency Communications as well as many other aspects of the hobby to you in an inexpensive way. It is not hard to get a Technician class license. Its easy to find a place to take the test when you are ready. Whatever you decide to do, its great that you are interested in Amateur Radio and thanks for reading our Blog. Fred, great to see these details on your installation project.
Looking forward to going mobile in my Jeep if I can come across a good deal on an IC Thanks for sharing. Scorpion SA Screwdriver Antenna. Breedlove Folder-Over Antenna Mount. Antenna In Folder Down Position.
Scorpion Whip Quick Disconnect. Control And Feedline Choking. Chokes Inside The F Screwdriver Antenna Manual Controller. Share this:. Like this: Like Loading Fred, I have been reading the series of posts on mobile ham radio installation with interest. Kristen Ridge ridge. Hi Kristen, Thanks for reading our blog. Thanks for all the work in maintaining this blog. Leave a Reply Cancel reply.
There are no tall trees that would serve to hide a normal wire antenna. I do not transmit above w, so I think the 26 gauge wire should work. On the other side of the back fence is a ' down slope to a large valley. I would like to use the elevation to my benefit. However, because of the fence, I can not simply put up a tripod mounted Buddipole, or similar portable antenna unless I put it on a mast , because I would have to transmit and receive through the 5' high steel fence.
The fence, by the way, is not a chain-link fence but a steel rail or picket fence. Every 10' there is a 2" square steel support post. If it were not for the portability issue, I would probably put up a Cushcraft R8 antenna.
Since that is not an option, I looked for a light weight vertical dipole to avoid the radial problem. They are a possibility, but there are radial problems again. My lawn is quite small and I don't want to tear up the patio.
Since mobile antennas use vehicles grounds instead of radial fields, I was thinking that the fence, with a few additional radials, might work in place of a car or truck. From what you are saying, that might work but, even so, a screwdriver does not make a great antenna below 20m. If that is true, what is a better mobile antenna? The idea of my van in the driveway with a stationary "mobile" antenna as someone else noted is also an idea I have considered.
Are there any mobile antennas better than screwdrivers from 6m to 40m? Is a van a better ground than a fence? I would love to hear any more good ideas? Last edited: Jul 19, K2POP , Jul 19, I have an antenna from eBay on order that I is going to be my first working HF antenna. Eventually, I'll get a dipole of some sort up, but for now this is going to be my only option. It will be useful in the future as a nice portable antenna, similar to a buddistick, as I plan on doing as much operating as possible portable in the future.
I'm subscribed to this thread, so when it comes in in the next week or so, I'll drop back in and let you know how well I can get it to work and leave you some information about it It's basically an 8. I believe it will be best for portable use, since anything portable is a compromise, and this antenna certainly will be a compromise, but I figured since it is portable, it would be able to get right around HOA rules since it is not at all permanent, and can easily be put up and taken down in minutes.
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