• To anyone looking to acquire commercial radio programming software:

    Please do not make requests for copies of radio programming software which is sold (or was sold) by the manufacturer for any monetary value. All requests will be deleted and a forum infraction issued. Making a request such as this is attempting to engage in software piracy and this forum cannot be involved or associated with this activity. The same goes for any private transaction via Private Message. Even if you attempt to engage in this activity in PM's we will still enforce the forum rules. Your PM's are not private and the administration has the right to read them if there's a hint to criminal activity.

    If you are having trouble legally obtaining software please state so. We do not want any hurt feelings when your vague post is mistaken for a free request. It is YOUR responsibility to properly word your request.

    To obtain Motorola software see the Sticky in the Motorola forum.

    The various other vendors often permit their dealers to sell the software online (i.e., Kenwood). Please use Google or some other search engine to find a dealer that sells the software. Typically each series or individual radio requires its own software package. Often the Kenwood software is less than $100 so don't be a cheapskate; just purchase it.

    For M/A Com/Harris/GE, etc: there are two software packages that program all current and past radios. One package is for conventional programming and the other for trunked programming. The trunked package is in upwards of $2,500. The conventional package is more reasonable though is still several hundred dollars. The benefit is you do not need multiple versions for each radio (unlike Motorola).

    This is a large and very visible forum. We cannot jeopardize the ability to provide the RadioReference services by allowing this activity to occur. Please respect this.
  • Effective immediately we will be deleting, without notice, any negative threads or posts that deal with the use of encryption and streaming of scanner audio.

    We've noticed a huge increase in rants and negative posts that revolve around agencies going to encryption due to the broadcasting of scanner audio on the internet. It's now worn out and continues to be the same recycled rants. These rants hijack the threads and derail the conversation. They no longer have a place anywhere on this forum other than in the designated threads in the Rants forum in the Tavern.

    If you violate these guidelines your post will be deleted without notice and an infraction will be issued. We are not against discussion of this issue. You just need to do it in the right place. For example:
    https://forums.radioreference.com/rants/224104-official-thread-live-audio-feeds-scanners-wait-encryption.html

TK-690 ignition sense mod info inquiry

Status
Not open for further replies.
Joined
Jan 26, 2011
Messages
1
#1
Hi everyone. I am new to amateur radio. I do not know much about it. I am wondering if you could help me. I have found online an ignition sense mod for TK-x30 radios

TK-730 ignition sense mod

However, I am looking to perform the same ignition mod on a TK-690. I have exhausted google and bing trying to find a similar mod. Any help is greatly appreciated.
 
Joined
Dec 19, 2002
Messages
906
#2
You'll need to find a copy of the service manual. The ignition sense mod involves moving some 0 ohm jumpers around on the control board.
 
Joined
Dec 5, 2008
Messages
1,624
Location
Sonoma, CA
#5
What are you thinking of doing? If all you want to do is switch the radio on and off with the ignition, it will do this just fine by switching the B+ red lead. The radio remembers what state it was in when the power was removed and will resume that state when power is re-applied.

Now if you want to use other optional settings, like timed power off or horn alert defeat, a KCT-18 ignition cable will be required for those.
 
Joined
Mar 7, 2002
Messages
2,548
Location
New Orleans region
#6
What are you thinking of doing? If all you want to do is switch the radio on and off with the ignition, it will do this just fine by switching the B+ red lead. The radio remembers what state it was in when the power was removed and will resume that state when power is re-applied.

Now if you want to use other optional settings, like timed power off or horn alert defeat, a KCT-18 ignition cable will be required for those.

The best way to do it is to just use the ignition cable wire that goes into the accessory connector. I believe that the jumpers in the control head come from the plant already set in the correct position. However I could be proven wrong. But all the radios I have hooked up all needed the +12 volts supplied to the control head on the ignition wire accessory pin to turn the radio on.

I would never attempt to control the radio on off by trying to switch the high current red wire. That is like asking for disaster to occur at the switch you tried to use. Plus the transmitter probably wouldn't work correctly due to the voltage drop through the switch.
 
Joined
Dec 5, 2008
Messages
1,624
Location
Sonoma, CA
#7
If the radio from kenwood was ordered with the ignition cable and factory assembly, the jumpers for ignition sense will be set for you. Otherwise the jumpers are set to ignore ignition as a default.

As Jim pointed out, switching main power is touchy (especially if it's a 100W radio) and I should have mentioned it. Hooking it to a fuse block, or even a heavy duty toggle switch is going to give you probs. You have to think beefy. A relay should be used. Those 30A ice cube relays at a minimum, but I like the 75A Bosch relays.

A lot of fire departments run 790's and they are wired to the main switched power buss in the engine. No ignition sense lead is used and they turn on by themselves and play fine.

You can hook up your 690 either way, the choice is yours.
 
Last edited:
Status
Not open for further replies.
Top