Bike powered Kenwood TK359 bike to bike setup.

[Incarpaul]

thanks for the info

no idea on electrics - I am an IT guy

So - don't I need the hella/auto plug on the eliminator - is it just a holder/attachment...

I thought there would be something "in it" that did the 12v<>7.5V wizardry etc

So - if I just cut off the plug and wire it up = done...

My gaster is flabbered

The only thing inside the hella/ cig plug would be a small fuse so if you cut this off then insert a small inline fuse in the positive wire (2amp will be fine)

Or buy one of thesehttp://www.amazon.com/New-Cigarette-Lighter-Female-Socket/dp/B001F4HFYO wire direct to battery and plug eliminator in to this. Then when not in use simply unplug eliminator.

Paul

 

[newboy]

cheers

 

[Silver Rat]

You can't power the radio from the autocom, it doesn't put out enough current, it's designed for the 1/2 watt pmr radios only.


Justin,

Are you 100% sure that you cannot power a higher wattage radio from the Autocom? Do they not all run on a 7 volt input and the 1/2 watt or 2 watt is the output of the signal??

I am sure that I have read somewhere that it has been done and has not been an issue?

K

 

[Incarpaul]

You can't power the radio from the autocom, it doesn't put out enough current, it's designed for the 1/2 watt pmr radios only.


Justin,

Are you 100% sure that you cannot power a higher wattage radio from the Autocom? Do they not all run on a 7 volt input and the 1/2 watt or 2 watt is the output of the signal??

I am sure that I have read somewhere that it has been done and has not been an issue?

K

HI Silver Rat I have also read that some people have had no issue's but others have damaged their autocom's!!!!!!! If you think about it a normal 446Mhz radio has 0.5w power output but the Kenwood can produce 4W that's 8X normal output.... more watts = more current/amps. If or if not the autocom could handle the extra current draw would it be worth the risk of possible damage to the autocom for the sake of a £7.00 battery eliminator.

Paul

 

[newboy]

Right
thanks for all advice and PM's

Bought a part 102 and will give that a go

 

[mr_magicfingers]

You can't power the radio from the autocom, it doesn't put out enough current, it's designed for the 1/2 watt pmr radios only.


Justin,

Are you 100% sure that you cannot power a higher wattage radio from the Autocom? Do they not all run on a 7 volt input and the 1/2 watt or 2 watt is the output of the signal??

I am sure that I have read somewhere that it has been done and has not been an issue?

K

It might work, would you want to risk your autocom though? Official advice is not to try powering a radio of more than 0.5watt.

Very much a case of try it if you'd like but I wouldn't. Not when a battery eliminator is so cheap.

 

[russ996duke]

You can't power the radio from the autocom, it doesn't put out enough current, it's designed for the 1/2 watt pmr radios only.

You can get a battery eliminator from a place in the US which replaces the regular battery, or you can buy and modify one as I did. If you're not happy soldering then your best option is to google for the battery eliminator.

J.

tried to locate supplier of the eliminator in usa but no luck, any chance of a link or name??
ta

 

[mr_magicfingers]

tried to locate supplier of the eliminator in usa but no luck, any chance of a link or name??
ta

Here you go,

http://www.comtrexcommunications.com/battery-eliminator-for-tk250-tk350-radios-p-7538.html

 

[russ996duke]

Here you go,

http://www.comtrexcommunications.com/battery-eliminator-for-tk250-tk350-radios-p-7538.html

hi mate thats great, erm, except now gone for puxing!!!
ah well, will store details anyway just incase, thanks for the info !

 

[Bumpkin]

hi mate thats great, erm, except now gone for puxing!!!
ah well, will store details anyway just incase, thanks for the info !

I got one of these to go with my PX-888, picked up the appropriate power plug at Maplin today and will be wiring to the bike one evening next week. The transformer is in the dummy battery so it's just a case of making up the parts to plug into the socket in the lead meaning I can still use the fag lighter bit in the car if required.

 

[russ996duke]

I got one of these to go with my PX-888, picked up the appropriate power plug at Maplin today and will be wiring to the bike one evening next week. The transformer is in the dummy battery so it's just a case of making up the parts to plug into the socket in the lead meaning I can still use the fag lighter bit in the car if required.

wello the link took me to the website but not the item, I am guessing its a battery eliminator for the P888, which I have also ordered for supply with the P888...altho I could modify it, as I already have an extra cigar lighter type socket from my extra fuse box under seat, I plan just to use it as standard!

How have you got on with the P888??

 

[Bumpkin]

wello the link took me to the website but not the item, I am guessing its a battery eliminator for the P888, which I have also ordered for supply with the P888...altho I could modify it, as I already have an extra cigar lighter type socket from my extra fuse box under seat, I plan just to use it as standard!

Yes, I noticed that, something up with that website, try a 2nd time and it should work... It's a battery eliminator with a socket in the lead between the cigar lighter plug and the dummy battery. I already have a cigar lighter socket on a trailing lead on the bike, this plugs into the Optimate lead which is connected directly to the battery and is already fused. When this lead is connected I have this in my tank bag for recharging phone, cameras, netbook etc. whilst on tour.

I'm led to believe that I'm going to need to connect the battery eliminator to the same power source as my Autocom to avoid ground loop interference. On my bike this is under the seat connected to an accessory harness which has spare capacity for the feed for the battery eliminator. The accessory harness is powered off the rear brake light switch so is switched with the ignition, perfect for both the radio and the Autocom.

How have you got on with the P888??

Have yet to use it on the bike, as a hand held it seems to work well but that's only using it with the family Binatone cheap PMRs. Should be riding with some mates in just over a week and will get a chance to try it out for real then.

 

[russ996duke]

Yes, I noticed that, something up with that website, try a 2nd time and it should work... It's a battery eliminator with a socket in the lead between the cigar lighter plug and the dummy battery. I already have a cigar lighter socket on a trailing lead on the bike, this plugs into the Optimate lead which is connected directly to the battery and is already fused. When this lead is connected I have this in my tank bag for recharging phone, cameras, netbook etc. whilst on tour.

I'm led to believe that I'm going to need to connect the battery eliminator to the same power source as my Autocom to avoid ground loop interference. On my bike this is under the seat connected to an accessory harness which has spare capacity for the feed for the battery eliminator. The accessory harness is powered off the rear brake light switch so is switched with the ignition, perfect for both the radio and the Autocom.



Have yet to use it on the bike, as a hand held it seems to work well but that's only using it with the family Binatone cheap PMRs. Should be riding with some mates in just over a week and will get a chance to try it out for real then.

ok be interested to see how it goes on bike...I have been advised that even tho I am using a battery eliminator because it is connected to the same circuit as the autocom (I also have a little power distribution box under seat) this in itself may cause noise due to ground loop effect and that some sort of isolater circuit wizardy may be needed...differs bike to bike and depends on power output used....

 

[Bumpkin]

ok be interested to see how it goes on bike...I have been advised that even tho I am using a battery eliminator because it is connected to the same circuit as the autocom (I also have a little power distribution box under seat) this in itself may cause noise due to ground loop effect and that some sort of isolater circuit wizardy may be needed...differs bike to bike and depends on power output used....

Well, I've had conflicting advice from various sources. Full in-line ground loop suppression devices/ferrite rings/nowt... Maybe I'm trusting the one with the outcome I want Having said that the guy who told me this is the guy who supplied the harness, I've met and ridden with him and he does know a bit about sparky stuff and comms. Although he has an Autocom/Kenwood PMR set-up with the radio powered though the Autocom. Time will tell I guess, I'll let you know next week once I've gotten around to fitting the parts onto the bike and testing them. As you say it may also be dependant on the bike and where you're hooked up to power-wise. Mines a VFR VTEC with power taken from the rear brake light + feed.

 

[russ996duke]

Well, I've had conflicting advice from various sources. Full in-line ground loop suppression devices/ferrite rings/nowt... Maybe I'm trusting the one with the outcome I want Having said that the guy who told me this is the guy who supplied the harness, I've met and ridden with him and he does know a bit about sparky stuff and comms. Although he has an Autocom/Kenwood PMR set-up with the radio powered though the Autocom. Time will tell I guess, I'll let you know next week once I've gotten around to fitting the parts onto the bike and testing them. As you say it may also be dependant on the bike and where you're hooked up to power-wise. Mines a VFR VTEC with power taken from the rear brake light + feed.

yep fingers crossed it goes well...still trying to work out how the filter is wired into the puxing/autocom power lead, mine hasnt got a nifty plug half way down it...might have to resort to the soldering iron

 

[Bumpkin]

mine hasnt got a nifty plug half way down it...might have to resort to the soldering iron

Just make sure that the transformer is in the dummy battery not the cigar lighter plug otherwise you might be feeding 12v into your radio.

 

[hmmmmmmm]

re tk359

tk 359 powered by a autocom pro avi using lead 102
not a prob
been using for 2 years now
programme the radio yourself and set to low or medium power within the software
This method eliminates the need for bat eliminator and also very very quiet on my pan 1300
by quiet i mean no interferance from the fuel injection system ect
just plug in my headset to a socket and away i go

 

[russ996duke]

tk 359 powered by a autocom pro avi using lead 102
not a prob
been using for 2 years now
programme the radio yourself and set to low or medium power within the software
This method eliminates the need for bat eliminator and also very very quiet on my pan 1300
by quiet i mean no interferance from the fuel injection system ect
just plug in my headset to a socket and away i go

hi hmmmmmmmmmmmmmmm, glad that works for you, as my radio may
on occasion possibly be pushing out more than say 0.4w, power via autocom is not recomended, and as battery life also may be affected by power output, battery eliminator will pass the load to the bike battery.... hypothetically speaking of course

 

[hmmmmmmm]

hi hmmmmmmmmmmmmmmm, glad that works for you, as my radio may
on occasion possibly be pushing out more than say 0.4w, power via autocom is not recomended, and as battery life also may be affected by power output, battery eliminator will pass the load to the bike battery.... hypothetically speaking of course

spoke to alan at autocom about this
he said tk359 on low power setting should work fine
and after 2 years usage, and using my radio constant for 6 hours a day
i am more than happy with the performance
but hey, what ever works for you m8
just thought i would give my input about tk and autocom

now on another note, internals within the autocom can be upgraded to handle 4w output from the radio, and powered by the autocom unit
autocom would need to do this i am told, and i dont know the cost as of yet
but i guess that would be a real good upgrade in my book

ps, editing the tk359 or tk350 is a simple job, but you do need a real old slow pc to do this
i have a old 286 laptop running dos 6.22


thanks

 

[russ996duke]

nice one!