Evansville, Indiana USA
Beverly Ave 47710
Business Hours By Appointment
Tuesday thru Saturday
By Appointment
Sunday
CLOSED
Monday
CLOSED
DIRECT THREAD-ON adapter for the Harvest HD-330 screwdriver antenna.
The HD330 uses an unusual / proprietary thread that makes it not possible to use a standard whip or stinger with the normal 3/8x24 thread. Only the telescopic antennas that come with it are able to thread onto the coil. This adapter solves that very real problem ! It threads directly onto the proprietary thread on the top of the coil. It is secured with a stainless steel set screw at the very bottom (as to not damage the threaded stud on the coil). This allows you to use a 0.125 inch (1/8 inch) steel stinger whip/ antenna / whip
This adapter is available in two (2) different versions. This one with the 1/8 hole on top and a set crew. And also available with a standard 3/8 X 24 female thread in the top for threading in any type of fiberglass or steel whip from 36 to 102 inches or a spring or other accessory.
I have tested and used a Harvest HD330 screwdriver antenna with 36 inch to 65 inch stainless steel stinger whips. The antenna tunes from 80 meters to 10 meters with no issues. The 60 inch whip seems to be most efficient. The Harvest HD330 screwdriver antenna is available from JNR on Amazon and on eBay.
Hand Made and Individually Machined in Evansville, Indiana USA
Tom G. 5.0 out of 5 stars Good mount for 2020 Pete 579 Reviewed in the United States on August 24, 2021 Verified Purchase This mount worked well. I did have to take it off and bend the bracket a few degrees out so that my XM antenna stood straight. Other than that, to mount it, I just removed the two bolts holding the curb mirror to the top of the door, set the P4 mount in place on the door, and ratchet the bolts snug to the door. No drilling as the P4 mounting holes match perfectly to the Pete's mirror mount holes. Very solid mount. No vibration going down the road. High quality!
Brian Rein5.0 out of 5 stars Five Stars Reviewed in the United States on April 10, 2018 Verified Purchase Fits perfectly on my semi.
More testimonials coming soon !
Raymond Sult
Machinist / Artist
Machartist: Machinist / Artist
Inventor & Designer of the Patent Pending P4 antenna mount for Freightliner Cascadia semi trucks and other semi trucks.
Evansville, Indiana USA
Beverly Ave 47710
Business Hours By Appointment
Tuesday thru Saturday
By Appointment
Sunday
CLOSED
Monday
CLOSED