Re: [MichiganFoxHunter] Re: Fox hunt Timer
- James,Yes -- I think I did, but you never know with Yahoo. I was replying to Jim, KC8pcj, from Muskegon. Jim is making a fox box timer with a 555 and a keyer to replace the microphone to keyer one he had in the last hunt. The $17 dollar K1EL keyer will play a 90 second code message and then shut off -- looks nice and it goes right down the PIC Microcontroller road I am traveling now.(I replied to Jim from the Yahoo site.)----- Original Message -----From: RichardsSent: Monday, November 15, 2010 11:57 AMSubject: Re: [MichiganFoxHunter] Re: Fox hunt Timer
Hi Mike... Did you reply to the correct "Jim" ?
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On 11/15/2010 9:26 AM, mike_w8der wrote:
> Jim, Looks like you have an interesting idea there. I ordered a couple of K8EL keyers to give it a try also. Setting the keyers for a 60 second transmission would be just about right. Also that's an interesting collection of NE555 applications.
- I have the timing using a 6.8K resistor for R1, a 2 meg of resistor on R2B and a 100 mf Cap and 0 resistance on R2A. The timer has a high output that turns on the relay for about .75 sec and is off for 4 min. Relay trips keyer memory 1 which plays a 1 min cw msg that I program into the keyer like the msg we used at last Muskegon hunt. Keyer output option "O") is set to stay on while msg is playing.I am making cable with same interface connectors that I use with my packet TNC. Will have one cable from keyer that will use TNC cable for the radio I choose. RS HTX242, Icom T90 or Yeasu ft8900 or 847.My TNC goes to a 5 pin din. The other cables adapt the 5-pin din to which ever radio I am using. I will post a picture of the test board with all the gator clip wires of the test version (ugly but works). Now that I know the values I need I will clean it up and put it in a box. All will be power by 12V and should fit with room to spare in my ammo can.I will try to create schematic for this also.73s
KC8PCJIf there no Light at the end of the tunnel, Just march right down there and turn it on.
Jim, Looks like you have an interesting idea there. I ordered a couple of K8EL keyers to give it a try also. Setting the keyers for a 60 second transmission would be just about right. Also that's an interesting collection of NE555 applications.
--- In MichiganFoxHunter@yahoogroups.com, "kc8pcj" <kc8pcj@...> wrote: