B738bbjsim
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I have a Gables Transponder head containing 4 rotary switches which increment or decrement the thousands, hundreds, tens and units depending which way they are turned. I see there are FS offsets for these values. What I cannot see is how to interface this unit to the sim. Normally there would be one (or more) common connection and 8 or 9 outputs from each switch. Is there any way to record (from a starting position, maybe the default xpdr setting) how many turns a rotary switch makes and in what direction, then send it to the appropriate offset? I have FDT Simboards available.
Setting Transponder codes with rotary switches
in FSUIPC Support Pete Dowson Modules
Posted
Thanks Peter,
the boards I have are Flight Deck Technology Simboards. They support programming for switches to provide events on turn on or off or change state. The problem is although I can easily enough represent the 4 digit value for the transponder I can find no way to input that to FS. Can I use transponder set to do that? If so, what form does the value take, HEX or BCD?
All I can see the other offsets doing is incrementing or decrementing the values on the FS radio stack as though clicked on by a mouse.
I will endeavour to find a programming method which would use the increasing or decreasing resistance of a potentiometer ladder to indicate the direction the switch is turning as well as its displayed value. Whilst I agree that rotary encoders are easier to use than rotary switches, modern radios lack the prestige of these antique avionics!
I, and others have in the past posted similar questions elsewhere. The response unfortunately always seems to be along the lines of "if you find out, let me know, I want to do that too!"