Amateur Radio · GMRS

W9APZ

Thom Williams · Summerfield, North Carolina · Grid FM06

Amateur · Technician GMRS WSFH657 ex-KQ4WSV Node 63683 Active

About

Est. 1970 — married, with six kids. A licensed amateur radio operator and GMRS licensee, operating from Summerfield in the North Carolina piedmont. Licensed in November 2024 as KQ4WSV, now holding the vanity call W9APZ — Technician class, working HF, VHF and UHF. GMRS as WSFH657 for the family radios and around the property.

Digital modes — and why AllStarLink

I’ve spent time on D-STAR and DMR. Both are clever bits of engineering, and both are worth learning — but each one ties you to a particular flavour of radio talking to a particular network. Change hardware and you start over.

AllStarLink is where I settled, and the reason is simple: it doesn’t care what you own. It’s ordinary analogue FM over RF into a node you host yourself. Any radio that can hit your node can reach the world — no proprietary codec, no vendor’s network in the middle, and the repeater is yours.

Proof of the idea: most days I work the node with a Baofeng M5R, a handheld that costs less than dinner out. The expensive radios are lovely and they all still get used — but nothing on the node requires them.

Where to find me

Three repeaters, and it works out about an even split between them — any of the three is a fair bet.

K4JDR — Raleigh

441.725 MHz · analogue · AllStarLink node 42235, on the Carolina 440 UHF link system. My node 63683 stays permanently linked here.

carolina440.net →

W4GSO — Greensboro

442.8625 MHz (+) · D-STAR · covering the Piedmont Triad. Sponsored by the Greensboro Amateur Radio Association, of which I’m a member.

w4gso.org → RepeaterBook →

N4IV — Madison

147.345 MHz (+) · 103.5 Hz tone · analogue · the 2 m machine of the pack. Rockingham County, north of the Triad, sponsored by the Rockingham County Amateur Radio Club.

n4iv.org → QRZ → RepeaterBook →

Nets

Carolina 440 is a non-profit network of linked UHF repeaters covering large parts of North Carolina, supporting SKYWARN, AUXCOMM/ARES and public service events across the region.

Station

Base

  • Icom IC-7100
    HF / VHF / UHF all-band, all-mode transceiver

Mobile

  • Icom ID-5100
    Dual-band mobile — in the truck

Antenna

  • Diamond X300A
    Dual-band 2 m / 70 cm base vertical

Handhelds

  • Kenwood TH-D75A
    Tri-band, D-STAR and APRS
  • AnyTone AT-D878UVII
    DMR and analogue, dual-band
  • TIDRADIO TD-H8
    Dual-band
  • Baofeng M5R
    Daily driver into the node
  • Baofeng UV-5R
    The one everybody starts with

Infrastructure

  • AllStarLink ASL3 on Raspberry Pi 5
  • SimpleUSB radio interface
  • Allmon3 dashboard
  • Full transmission audio archive

Digital Modes

  • D-STAR · DMR · APRS · AllStarLink

AllStarLink Node 63683

A full-duplex AllStarLink node running here in Summerfield. RF access is via an HSR USB Duplex Repeater hotspot — low power, local coverage for the station and the truck on the driveway. The interesting part is the link side: the node is open on AllStarLink, so anyone with a node can connect from anywhere in the world.

Being duplex rather than simplex matters more than it sounds. A simplex hotspot can’t hear anything while it’s transmitting, so on a busy hub you have to wait for it to drop before you can get a word in or send a DTMF command. Duplex transmits and receives at the same time — so you can break in like you would on a real repeater.

Node number
63683
Mode
Full duplex
RF interface
HSR USB Duplex Repeater
Audio IC
CM-119B
Channel driver
SimpleUSB
Host
Raspberry Pi 5 · NVMe · ASL3

Live node statistics → The hotspot hardware →

How to Connect

Licensed amateurs are welcome. From your own AllStarLink node:

; connect, transceive
*3 63683

; monitor only
*2 63683

; disconnect
*1 63683

Please identify with your callsign and leave a pause between transmissions so linked systems can key up.