Screwdriver antenna installation Scorpion Antennas™ are designed for amateurs that demand outstanding performance. K8RWK started building the antennas in the mid-1990s and made substantial mechanical improvements to the basic construction. This taught me the fundamentals of constructing common mode baluns to eliminate RF on control and coax lines. more. restrictions keep you off the air! May 9, 2015 · A good antenna at the time, was made by High Sierra. Apr 11, 2009 · To keep antena systems simple and easy to install, I have tried using the Tarheel Screwdriver antenna mounted on the ladder of the motorhome. What a performer! I'm back on the HF bands again. May 10, 2015 · This important safety feature should be strongly considered in any screwdriver antenna installation. It by far is the WORST HF mobile antenna I have ever used or owned. First screwdriver antenna I ever purchased. May 22, 2013 · I can install a scanner antenna or a UHF antenna on this mount if needed. Don’t let H. Rating last 180 days Total reviews Avg. This unit can also be used to manually move the antenna up or down to fine-tune the match. GeoTool mounts will hold antennas with 3/8"-24, NMO, SO-239, ATAS, 1. The paperwork on the antenna didn't give much hope of using it in non mobile applications. Oct 13, 2014 · Our plan has been to enhance our Mobile HF installation to include a Screwdriver Antenna and a Mobile Amplifier. strongly recommends the use of ferrite split-bead chokes, on both the feedline and the motor control cable. Scorpion mobile HF antennas are among the best in quality and efficiency. Get some sheet metal ( I used 11 ga SS) have 2 strips sheared that are 8-10" wide and 4 foot long. motorized antenna,screwdriver antenna, mobile HF Antenna. One of my strips is 5' and one is four foot. My Motorhome Installation of a Screwdriver Antenna. It is a center loaded HF mobile antenna. We also have mounts for Screwdriver Antennas, and grounded mounts for loop antenna masts. 625. Our antennas work great in Mobile, Home and Portable settings. Enter the original DK3 screwdriver antenna. 9 The screwdriver antenna is based on the use of a loading coil with a whip antenna (typically 102"-120", like those used for 11-metre CB radio installations). We build an ideal base station antenna for the amateur living with antenna restrictions. Below is a picture my old 151. Hamsticks,Hustler,DK2 Screwdriver & the TARHEEL II all blew it away on transmit & receive & none of them ever started re-tuning in the middle of a QSO. I decided to build a basic screwdriver antenna for the mobile, patterned after the original DK3 introduced by Don Johnson, W6AAQ back in 1991. The Hi-Q™ antenna series is designed for mobile installation. Product is not in production: More Info: # last 180 days Avg. Drive a 1. Diamond Antenna Mobile Screwdriver Antennas. 25-inch OD pipe about 4 feet into the ground. The RF coax and control wires from the GS3 are fastened together with plastic ties. It was a screwdriver type. Jun 24, 2022 · During his search for a method of tuning the antenna remotely, Denney Moore, W6MHP (sk), suggested using the motor from a cordless screwdriver—and the screwdriver mobile antenna was born. The Hi-Q Antennas™ design is not a cheap copy of the original Don Johnson screwdriver antenna. max. , it takes a lot of space to have this mounted. To convert a screwdriver mobile antenna for base operations, do the following: 1. It would work well with the outside antenna and takes up very little room. 5-30 MHz, UHF mount, 200W PEP, 73 in. I ran one of them on my semi and straight truck for over 950,000 miles and I still use it today. For the video of this entire trip click Shunt matching coil needs to be adjusted, using an antenna analyzer. These lines come together with the coax feedlines from the other two antennas where they go over the edge of the roof and down into the passenger compartment of the vehicle. 25-inch. For example, Ron told me that the motor in the antenna is designed for 19 volts, and suggested that I use a DC to DC voltage booster for faster and more reliable tuning (less than $20 on Amazon). After receiving the repaired antenna, I reinstalled it with some changes to the installation. By, Ted Trostle, WB2LOU I have found out over the past year and a half that a motorhome installation of HF antennas is probably the toughest to achieve. Antenna, Screwdriver, 3. All of those antennas were used . Apr 23, 2024 · Locations like bumpers, trailer hitches, and ball mounts on the rear quarter panels round out the list. We chose a Scorpion SA-680 Screwdriver Antenna for our project. 5" and 2. Description: HF mobile screwdriver antenna, 80-6 meters, with integrated matching coil. This is a multiband antenna which is tuned by a gear-head motor, ultimately refined to operate from the internal workins' of a common powered screwdriver - Hence the name. Nov 11, 2023 · A handheld radio with this channel using an antenna mounted on the driver side by the windshield can be easily rounted inside. Johnson received a patent in 1991 for the device and thousands were sold. It differs in that the loading coil is adjustable to cover multiple HF bands. Jun 6, 2020 · I hope you have much better success with the ATAS 120A antenna than I did with a Yaesu FT-857D. Ferrite bead & strain relief to be installed on feedline. Home of Tarheel Antennas and Mounts since 2008. overall rating; 0: 0: 50: 4. Using a Tarheel Screwdriver antenna, I have tried many different locations on the rear and at the top of the ladder. Our motorized antennas and stainless steel mounts are designed with the most avid HAM radio operator in mind, as well as commercial applications. Perhaps a 50 Ohm match can be obtained. However, I never really was able to obtain the performance I believed was possible. The base of the antenna is a hollow tube. More on this later. Apr 13, 2013 · This video covers basic over all install of a Yaesu ATAS 120a screwdriver antenna with Comet HD-5M (RS-840) antenna mount on a 2011 Nissan Xterra with an alr Suzanne showed me her Amateur HAM Radio Scorpion Screwdriver Antenna installation on her RV where she lives full time and has for decades. This article covers the first of these upgrades. The following is a summary of the phases of the project: Phase 1 – Install the Icom IC-7000 running barefoot with a simple MFJ HAMStick Antenna (to be replaced with the Scorpion Screwdriver Antenna in Phase 3) Phase 2 – Properly bond all … Continue reading → Installation of this simple kit on your screwdriver antenna will allow you to enjoy the convenience of quickly and accurately returning to antenna settings, when used with the MFJ-1924 Screwdriver Antenna Digital Controller With Counter. (the original mobile antenna’s were nick named ‘screwdriver’ because they used an electric screwdriver for moving the coil) High Sierra no longer makes mobile antennas, but the good news is there is a good company making them in Arizona, Scorpion antennas! Review Summary For : Alpine screwdriver antenna; Reviews: 50 MSRP: 210. With screwdriver antennas, you’ll want to keep as much of the coil in the air—above the metal— as possible. Now everything is working great. Ideas? Discussion in '2nd Gen. Antenna efficiency and SWR are directly related to this! Modifying the Screwdriver Antenna Most screwdriver antennas are sold with a mounting bracket that can be attached between the main unit and a mounting tube of any outside diameter up to about 1. O. Page 1 of 2 1 2 Next > Aug 19, 2013 · This article will cover the second phase of our Mobile HF project – bonding and grounding. Stage 3 Mobile HF Station A Stage 3 Station is probably not for most folks due to the added complexity and cost, but it does create a “work the world” Mobile HF Station and can open the door to effective operation on 160m from a Mobile Station. The High Sierra screwdriver antenna does not have a magnetic switch installed from the factory. The screwdriver has a length of 1/4" all-thread rod attached to it, which drives the coil Apr 11, 2009 · The screwdriver antenna is based on the use of a loading coil with a whip antenna (typically 102"-120", like those used for 11-metre CB radio installations). Aug 12, 2013 · Phase 3 – Install the Scorpion Screwdriver Antenna and Controller; Phase 4 – Install a 500w Amplifier, 160m capability, and operating accessories; This past weekend, we completed Phase 1 of the project – installing the IC-7000 Transceiver and a HAMStick Antenna in our F-150 Ford Truck. height, Motor Switch Included, Kit May 22, 2013 · I can install a scanner antenna or a UHF antenna on this mount if needed. They’re the solution for tall antennas like a 102-inch whip, Hustler HF Mobile System, large screwdriver antennas, and hamsticks. . Nov 20, 2014 · The TuneMatic Antenna Controller will automatically adjust our screwdriver antenna with a simple touch to the Tune (TU) button when the radio frequency is changed. Here is what I did. Post Reply. A. Proper wrapping of wire is paramount and is useless unless executed correctly. Our HV Delrin Insulator supports mobile or fixed antennas for use with base loading Antenna Couplers. Tacomas (2005-2015)' started by Critter KD5NOI, Jun 10, 2012. Jun 10, 2012 · Screwdriver antenna installation. These Hi-Q Antennas™ products have the highest radiation efficiency and the highest level of quality the antenna be constructed of large diameter tubing which, while it may appear somewhat ungainly, greatly enhances the radiation efficiency of the antenna. Now let's take a look at the construction of a screwdriver antenna. That would be my suggestion. 0". npkvvvuo pkn wck myez opyaao mmuro pxgtbbh tjichiw tgd yxlbye aeurz mbfm wran ztjb hkoepl