The Montreal Fox V3  fully compatible with International Hunts in zone 2 (ARDF).

Hardware by Jacques VE2EMM.
Software by Francois VE2JX and Jacques VE2EMM.
Special thanks to Joe Leggio WB2HOL and Doug Reed N0NAS.

This project is free for non commercial use by Ham radio operators only.

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• 8 selectable ID codes, "MO", "MOE", "MOI", "MOS", "MOH", "MO5", "MON", "MOD".
• For 1 minute, it continuously sends the selected ID code at 8 WPM and terminates by a fast "DE hider's call

letters".
• Cycle times are: continuous to 7 minutes, depending on the numbers of FOXES in the hunt. 5 FOXES and 5

minutes is the international standard. More or less FOXES can be used for practice.
• Delayed start up to 3 1/2 hour, in 1/2 hour increment, all FOXES can be synchronized by a single PB.
• MCW.
• The Hider's call letters can be loaded in the EEDATA memory permanantly and changed just by setting switches.
• The indicating LED shows 1- Delayed start timing, 2- Incorrect combination of time and # of FOXES, 3- CW

keying being done.
• Small size, 2.5" X 2.75".
• Power consumption is 12 mA while timing and 180 mA while transmitting from 12 Volts.
• Power output on 2 Meters is at least 0.8 Watt, it can be increased to over 1 watt.
• 18 to 18.5 mHz fundamental Xtal (8 times multiplication), FM modulation.
• Uses only a few semiconductors, an ICS501 LOCO MicroClock, 2 transistor, a PIC controller and a 78M05 voltage regulator.

SOLDERING SURFACE MOUNT DEVICES

1-    Using a very small soldering iron tip, put a small quantity of solder on a corner pad.
2-    Position  the device carefully with pair of tweezers.
3-    Solder that corner pin while maintaining the alignment of the device on all the pads.
4-    Solder the rest of the pins with a very small amount of solder.

Spectrum analysis of the Fox output (46K).

Features and operation text. V 3 includes elemination of key clicks.

Construction text.

Parts list V 3     Get information on the availlability of the ICS501 from ICS.
Info from Phil Barnes-Roberts AD6PQ: "I got the ICS parts from    http://www.nuhorizons.com/ "
You can buy the FET from     http://www.jdr.com      1-800-538-5000

Use a PIC16F628 for all new construction, it cost less and is a better performer.

• Schematic diagram in PDF format V 3 of the Montreal Fox. R8 added for safety. (84K)
• Schematic of the synchronizing cable. (7K)
 
• Components location in PDF format. (140K)
• PCB in PDF format V3. (162K).      PCB V3 is available from FAR CIRCUITS.

• The Source code and Hex file for both the  PIC16F628 and the PIC16F84 are graciously available to ham radio operators only501fox.zip.