Remote Antenna Disconnect

I can see modifying a sliding under-desk computer keyboard tray into something like this.



Amateur Radio Antenna Remote Disconnect for Lightning Protection from alk on Vimeo.


Article Link is here.

Wide-band WebSDR

On this page you can listen to and control a short-wave receiver located at the amateur radio club ETGD at the University of Twente. 


http://websdr.ewi.utwente.nl:8901/




Alternative WebSDRs that can be tuned to SKYKING:
<http://K3FEF.com:8901/> [Loc FN21mh] fq 4724 8992 15016
<http://websdr.printf.cc:8901/> [Loc KO04sd] fq 4724 6739 8992
<http://201.159.93.242:8088/> [Loc GH80Ac] fq 4724 6739 11175
<http://46.241.39.39:8901/> [Loc NO13th] fq 13200 15016
<http://ik8ysw.ddns.net/> [Loc JN70fq] fq 13200 15016
<http://ra4ptj.ru/> [Loc LO64dv] fq 6739 13200 15016
<http://96.242.43.137:8902/> [Loc FN20xd] fq 4724 6739 15016
<http://sdritajai.ddns.net:8080/> [Loc GG53ob] fq 4724 6739 15016





EAMs and HF-GCSBy Ryan Schaum and Marcel H.

http://www.numbers-stations.com/



Numbers Station Info

Military Callsign List

Digital Voice Links

Beginning to delve into the realm of the digital voice modes.

Below are my links of interest...  so that I can find them again when I actually have the time to work on it!


DV Applications and Ham Radio

DV MEGA3000,    DV MEGA home page


Repeater Builder USB-RIM


Repeater Builder USB-RIM Lite

RIM-RC210/RLC: Schematic
Special Limited Time Price - $50 
This version is customized to be plug-and-play with the ARCOM RC-210 repeater controller. It is also compatable with RLC controllers from Audio Test Solutions (Formerly Link Communictaions). Simply plug the module onto an unused controller port, configure the controller and AllStar config files, and you are ready to explore the world of AllStar linking.
**Specific connection instructions will be available soon.**

RIM-Maxtrac-RM: Schematic
Special Limited Time Price - $60 
This product is VERY similar to the RIM-Maxtrac. The RM stands for Repeater Maker. The RM adds a second 16 pin module to connect to a second receive only radio. This allows for one radio to be the receiver and the other to be the transmitter in a repeater type setup. The RM version does NOT support channel steering.

All of the new Lite version products still inclue the missing pulse detector circuitry to avoid stuck PTT lines. By default, the heartbeat and PTT outputs are configured to allow the missing pulse detector to automatically disable the PTT line in the event of a stuck PTT due to USB PC communications failure.

All of these new boards offer an optional serial EEPROM that can be used to store radio/repeater settings.*

Courteous and friendly customer service. While product documentation is currently being written, the user's manuals for these products will follow in the same lines as the rest of the RB products in being straight forward and thorough.

* Software implementation dependant

Steve, W4HKL

Creating a Dual Boot Windows 7 / MS-DOS 7.1 System

Programming the older radios that absolutely need DOS AND a true serial port can be a real pain in the ass.  Although DosBox is wonderful and can work with the USB to serial adapters much of the time, sometimes you just can't go that route.  After spending the better part of two days (!) going thru the motions using GRUB, PLOP, various bootable media, I thankfully ran across the following article which is working for me.  Perhaps it will help you, too.

  TweakhomePC : Install Dual-Boot of MS-DOS 7.10 (FAT32) on Windows 7 computer (Win7 installed first)

Many thanks to TweakhomePC for ending my misery!


Steve, W4HKL

All Star

W4HKL All Star Set Up
Update 04 July 2020



All star Node 41538

146.460 Simplex 100Hz tone.
(City Limits of Maynardville, TN)

Node Status

Graphical Connection List

Equipment:  Node Radio, Motorola GM300@10 watts, approx 50 ft. LMR-400 to roof mounted 5/8 wave mobile antenna on ground plane kit.

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All Star Node 45333

Low Profile 444.675 repeater T100Hz
(City Limits+  of Maynardville, TN)

Equipment:  two Motorola PM400 radios, Repeaterbuilder RIM-lite RM, Rasp. Pi 3 using Hamvoip image for controller, Decibel duplexers, 40 ft LMR, Diamond X50A antenna

Repeater Status

Graphical Connection List


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All star Node 43043

223.400 Simplex.
(City Limits of Maynardville, TN)

Node Status

Graphical Connection List

Equipment:  Node Radio, Alinco DR 235 @ 5 watts, 1/4 ground plane.


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All star Node 422560

900 Mhz Simplex
(Residence only)

Node Status

Graphical Connection List