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N4UAG HOME BREW 12 VOLT ROTOR SYSTEM TO SPIN THE 5 ELE 2M BEAM.
MY NAME IS DOUG AND THIS IS MY QRP INSULATOR THAT WILL ADD 2 DB TO YOUR SIGNAL ON BOTH RECEIVE AND TRANSMIT BUT YOU HAVE TO THINK POSITIVE FOR IT TO WORK CORRECTLY.
MY NAME IS DOUG AND THIS IS MY QRP INSULATOR THAT WILL ADD 2 DB TO YOUR SIGNAL ON BOTH RECEIVE AND TRANSMIT BUT YOU HAVE TO THINK POSITIVE FOR IT TO WORK CORRECTLY.
MY NEXT PROJECT - ACTIVE OFFSET ATENUATOR
This thing works amazing well, I'm very impressed with how much rejection it provides. I was using it with a UHF 5 element beam. I could reject all of the foxes signal even within a few inches of it. I spent WAY to many hours working out the housing and grip/mount experimenting with different layouts and materials. One version had it just all strapping to the antenna boom. Worked, but really ugly... . All that is left is installing the grip material to the handle.
Below are some pics of my latest version of the power monitors for portable/field use to protect the batteries. These units are programmable for the cut-off voltage, as well as the restoral voltage. They also have a timer for a buffer so they don't cycle off/on/off/on as the load is dropped. Pretty cool little gizmos I found online. Printed the cases in the laboratory (said with my best English accent). Doug N4UAG 11-28-23
It took a minute, but below are the measurements I used for the two zepp antennas.
The 6 meter is great, haven't tuned the 10 meter yet, but it should be ok too. It's a proven build.
BELOW IS MY 3D PRINTED STRAIGHT KEY PROJECT START
FRESH OUT OF THE PRINTER AS SHOWN ABOVE !
FINISHED PROJECT FEATURES BALL BEARINGS AND MAGNETIC RETURN INSTEAD OF SPRING.
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