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IC-7200 Quiet Relay Receive Scan Mod Member Supply Depot



Icom IC-7200 Service Manual Download PDF
Diagram
Icom IC-7200 QRRS MOD: CLICK TO ZOOM

ZOOM: IC-7200 Quiet Relay Receive Scan Modification


Click here for
Icom IC-7200 QRRS MOD
High Resolution Diagram Image (8MB jpg)

Suggested Parts:

1 Relay. 9v Coil, SPDT, 1A Contacts
( Omron, Relay, Part # G5V-1-DC9 )
Digi-Key Part Number Z2539-ND
Cost ~US$2.44 each

Misc. Small diameter insulated wire, such as wire-wrapping wire, for soldered connections between relay and PCB.

Misc. Double-sided Foam Tape for mounting the relay.

Suggested Tools:

Small diameter Solder
Small Soldering Iron
Tweezers
Needle Nose Pliers
Wire cutters
Magnifying Glass

Schematic

Icom IC-7200 Quiet Relay Receive Scan Mod

Click here for
Icom IC-7200 QRRS MOD
High Resolution Schematic Image (8MB jpg)



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HF Selcall CCIR 493-4 Australian Type 
 
BACKGROUND
ALE was originally an expensive system for government services, but recent innovations in digital technology have brought the cost way down. The first organized amateur radio ALE nets began in 2001, corresponding with the release of the free PC-ALE software controller for ham radios. Several years of development by the 4000+ member HFLINK organization adapted ALE to be a ham-friendly, interference-free system. In 2007, the internet- connected HFN network went into full scale 24-hour service. HFN rapidly expanded to cover large areas of the earth, and it has become the prime framework for ham radio operations using the global standard ALE system. In keeping with its roots, ham radio ALE still maintains compatibility and interoperability with goverment ALE radios, many of which are also available now on the surplus market and being used by hams. Nearly every major HF SSB radio manufacturer in the world is now marketing an ALE radio.



High Frequency Network ALE CHANNEL ZERO
    HFN
High Frequency Network

The services currently provided by Global ALE HFN stations using Automatic Link Establishment, include: HF SMS Phone Texting, Text HF Email messaging, real-time-activity tracking, HF-to-HF Relay, Net Call ups, Net announcements, and individual station direct HF calling. Real-time reporting of who is on the air and able to communicate with each other, is tracked by the global network of stations through ALE COMM CENTRE on the web.
 

















































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Icom IC-7200 Quiet Relay Recieve Scan Mod

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