Source code for this project
http://hamradioprojects.com/authors/wa5znu/+dozen/code

F1ZRX ATV/DATV Repeater
http://f1zrx.camstreams.com

DTMF
http://en.wikipedia.org/wiki/Dual-tone_multi-frequency_signaling

Zarlink Semiconductor MT8870 DTMF Receiver
http://www.zarlink.com/zarlink/mt8870d-datasheet-oct2006.pdf

Zarlink Semiconductor Appliation note MSAN–108
http://www.zarlink.com/zarlink/hs/82_MT8870D.htm

Solarbotics Ardweeny
http://www.solarbotics.com/product/kardw/

Argent Data SSTV Camera
https://www.argentdata.com/catalog/product_info.php?products_id=150
http://wiki.argentdata.com/index.php?title=SSTVCAM

Female jumper cables
http://adafru.it/266
http://www.sparkfun.com/products/8430

Extra-long male header pins
http://adafru.it/400
http://www.sparkfun.com/products/10158

Shack Audio Amplifier
Radio Shack 277–1008C

Half-sized Solderless Breadboard
http://adafru.it/64
https://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?productId=2125051

Arduino Prototype Shields
http://arduino.cc/en/Main/ArduinoProtoShield http://www.sparkfun.com/products/7914
http://www.ladyada.net/make/pshield/
http://www.makershed.com/MakerShield_p/msms01.htm