Links

Club websites

Personal websites

AREC (Amateur Radio Emergency Communications)

Packet Radio websites

Simplex ('Parrot') Repeaters

Use of re-radiation of super-regenerative receiver as an on-frequency repeater.
Plessey Avionics PTR3411 "Groundsat" simultaneously receives and transmits on the same frequency. Not really a 'parrot' as such, but of interest.
Simplex Repeater using ISD2560 voice storage chip.
EchoStation is a Windows repeater controller, capable of parrot usage. Not free.
SIMPLEX is a free Windows repeater controller capable of parrot usage.
Simplex Repeater Yahoogroup
ADS-SR1 Simplex Repeater
NHRC-3+ Repeater Controller
PrimeHERTY simplex repeater controller.
RADIOShop888 simplex repeater controller.

Optical Communications (New)

Optical_DX Yahoogroup Australian, but with contributors world-wide
REAST Tasmanian experiments
Modulatedlight.org lots of information
Receivers for low-bandwidth optical (through-the-air) communications (part of the above website)
K3PGP receiver circuit
OM2ZZ circuit and experiments
F1AVY written in french
NASA Optical Communications Group laser spacecraft and terrestrial communication

Other websites

Last updated 2017-07-01