JS8remote for JS8call onAndroid and iOS

9A1GS

First version of js8remote is uploaded to the Google play store. iOS version is also ready and it needs to be compiled and uploaded to the App store. My old iMac will get some electricity back after a long period of sleeping.

To set it up, in JS8call preferences, set UDP server IP to the IP address of your phone/tablet and under port please use port 2242. You can also use broadcast IP for your subnet or multicast IP 224.0.0.1. Multicast IP is hardcoded at the moment, but soon there will be updates for the app with more things added.

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Magnetic loop controller PCB – design by Loftur E. Jónasson – TF3LJ / VE2LJX

9A1GS

This is a magnetic loop controller board designed by Loftur TF3LJ and VE2LJX. This PCB was designed by 9A1GS (former 9A3GOS) (me) and assembled by two assembly factories. Each factory made 5 boards (minimum order quantity).

There is one via under the stepper driver which could be a little bigger, but I was driving 2 amps to a stepper motor without an issue.

Original design and documentation: https://sites.google.com/site/lofturj/to-automatically-tune-a-magnetic-loop-antenna

PDF Automatic_Magnetic_Loop_Controller_BOM_and_building_instructions_Rev3-Rev4PCB_r02Download PDF file

You can upload a compiled hex file to a teensy microcontroller or use Arduino environment to modify it and compile it yourself.

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Anytone 578 mobile and 878 handheld VHF/UHF ranging and remote monitor

9A1GS

Among other great functionalities available on Anytone DMR radios, I just recorded how you can initiate a remote monitor and ranging request from one radio to another.

With ranging request, the receiving station is replying with a location. On a successful receive, initiating station either shows you distance/bearing between two radios or GPS coordinates of the second radio. If a receiving radio, that initiated a request, has a GPS lock, distance and bearing will be shown. Without a GPS lock, just a GPS coordinates of a remote radio will be shown. Of course, remote radio needs to have a GPS lock.

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Using Shift, Width and Narrow filter on a radio

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Signal filtering on Yaesu FT-891

DEMO WITH VIDEO

When using js8call or more crowded ft8 frequencies, there are signals coming from all directions, some stronger and some weaker. And it looks like this.

Brighter yellow signals are stronger ones, but there are some fading signals in the middle, probably also decodable without a need to isolate them to ‘hear’ them better, but signals on a far right side we most probably need to isolate.

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Install JS8Call 2.0.0-RC3 on Ubuntu 19.10

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JS8Call 2.0.0-RC3 on Ubuntu 19.10 from source

You can download binary version for Ubuntu 18.04, but for 19.10 you need to compile it yourself. Before compiling, there are some prerequisites you need to install from official Ubuntu repositories.

Hamlib is also required, so we will compile it also from the source.

JS8Call 2.0.0-RC3 one of the best features is that it can decode Normal, Fast and Turbo simultaneously.

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