Using a NanoVNA to Fix Our Repeater Coverage
We're phasing two dipole antennas together on our repeater system, but we need to add downtilt - to move the main lobe down toward our main users. This is how…
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September 10, 2024
Ham Radio Repeaters: Everything You Need To Know
What are repeaters, how they work, what you need to know about etiquette and tips on how to build a complete repeater system. From understanding how repeaters work to advanced…
September 14, 2023
Reversing the KL audio delay bypass mod
Some of the KLs I've got have had the audio delay circuit in the receiver bypassed. This audio delay is what makes the KL have the nice silent mute action.…
April 18, 2023
2m KL150 PA repair
The KL150 I took from my stock for the new VK7RVP 2m repeater seemed to be in good condition, until I tested it. As usual, the low power mods were performed, channel…
April 18, 2023
Should you call CQ on a Repeater?
Nothing seems more controversial than whether you should call CQ on a repeater or not. Are there any rules about doing it? Answering Ham Radio Basic questions, helping you further…
August 3, 2021
Amateur Radio Repeater Repair & Site Visit
Today I traveled to the site of an amateur radio repeater on UHF (70cm) that I maintain after a fault on the transmitter appeared and gradually got worse over the…
September 3, 2019
Building a Simulcasting & Voting Repeater System using AllstarLink/VKLink
Introduction As any repeater builder would know, to make a good efficient working repeater requires a lot of time and energy. Performance of a repeater is shown in its ability…
September 19, 2018
PCBWay – PLL circuit voter project
A PLL was needed to lock the 9.6MHz OCXO reference that the voter board uses to GPS. KC2IRV came up with a circuit, and sent me the gerber files. Once…
May 17, 2017
KL70 Audio Response
Further to my simulcasting post. Initial testing indicated some distortion, especially with CTCSS tones in overlap. Voice was reasonable, but did "tear" in some areas and was distorted. To eliminate a…
March 22, 2017
Two Dipoles for VK7RTC
On Wednesday 1st of March, a two dipole array was installed at VK7RTC. These were generously and professionally constructed by Dion VK7DB. The design picked is mainly an elliptical pattern. Dion…
March 1, 2017