kenwood extension ariel

[scubaGSA]

I am fitting my autocom to my new GSA this weekend and the kenwood personal radio is going where the tools would be. This means the ariel is going to be horizontal and well hidden, does anyone know where i can get an extension for it so i can mount it vertically on my top box or wherever?
Cheers,

Andy

 

[rocks]

Not sure..

I think this has been asked before.. and I believe that remote arials require a license.. as they make the unit fall out of the pmr or similar regs.

I could be wrong, but that is my understanding. Try your local security radio dealer, as they tend to have lots of kenwoods and they should know the regs and rules so can offer more informed guidance.

But I am fairly certain that remote units with seperate arials technically require a permit of somekind.

Good luck.

 

[Kritou]

For use in UK (and likely others) PMRs must have the antenna permanently fixed to the handheld

 

[Timolgra]

For use in UK (and likely others) PMRs must have the antenna permanently fixed to the handheld

Yes that's the rules but it can be done and I've seen a few bikes with remote arials

 

[Ming]

Depending on the radio it can be very easy to do

 

[ebbo]

The few radios I know of that will take an external antenna

Puxing 777 from Ebay will take a ken Goodwin antenna
Wintec A80 from Intaride who will also supply anexternal antenna

 

[Kritou]

The few radios I know of that will take an external antenna

Puxing 777 from Ebay will take a ken Goodwin antenna
Wintec A80 from Intaride who will also supply anexternal antenna

also Linton LT-3288 with selectable 5W output £50
http://http://www.euroradiosales.com/rs2/index.php?main_page=product_info&cPath=3&products_id=2

 

[Kritou]

..... and if you are looking for an antenna you could try http://http://cpc.farnell.com/jsp/Aerials+&+Satellite/Aerials+&+Antennas/UNBRANDED/EF-442-3F/displayProduct.jsp?sku=AP00882- sticks vertically to the inside of your screen and to the uninitiated does not look like an antenna - being a dipole it does not need a groundplane so will give good omnidirectional performance - about £12

It's made of a flexible plastic with an adhesive backing, about 35cms in length so spot on for the PMR band

 

[roddy]

I couldn't get your links to work are these the same ?

http://euroradiosales.com/rs2/index.php?main_page=product_info&cPath=3&products_id=2

and is this the aerial ?

http://cpc.farnell.com/jsp/Aerials+...playProduct.jsp?sku=AP00882&_requestid=109632

 

[roddy]

Andy,

what you'll need to find out is whether, you can remove the aerial from your Kenwood radio first, I know some of them you can't and Kenwood being a large company not wanting receive the wraith of the radio authorities may make sue that there PMR class radios have very fixed aerials.

As it's been mentioned PMR must have a fixed aerial, though there are models out there that can have them removed it maybe worth having a look in 446user.co.uk it's a slow site but full of good info,

Also I believe there somebody on this site that runs there Kenwood under the seat without any problems regarding range or clarity, so it maybe worth trying first before you start busting things.

HtH

 

[Wanderer]

I run a Kenwood TK3202 under the seat and don't have any problems with 'usable' range. However, I'll watch this thread with interest - please keep us posted of progress/findings.

 

[Kritou]

I couldn't get your links to work are these the same ?

http://euroradiosales.com/rs2/index.php?main_page=product_info&cPath=3&products_id=2

..... Yes

...... Try this for the antenna

http://http://cpc.farnell.com/jsp/search/browse.jsp?N=411+10070+500001+1000649

Remember it's important that the antennae are are sticking UP - what the anorakai term "vertically polarised"

 

[roddy]

...... Try this for the antenna

http://http://cpc.farnell.com/jsp/search/browse.jsp?N=411+10070+500001+1000649

Remember it's important that the antennae are are sticking UP - what the anorakai term "vertically polarised"

still not working for me anyway, too many http:\\ for a start is this it ?

http://cpc.farnell.com/jsp/search/browse.jsp?N=411+10070+500001+1000649

cheers

 

[Kritou]

Yep, it's the first one on the page EF-442-3F

 

[sanqhar]

Aerials

Next time you talk to a police motorcyclist ask him where they put the radio aerial on their unmarked or surveillance bikes. They usually use a flexible one somewhere out of sight, like on or around the rear mudguard.

tom

 

[GSART]

i have run a kenwood tk3101 powered from my autocom under the tank for the last 6 years without a problem. i get line of sight transmission on an open road, and between 1/4 and 1/2 a mile in town.

 

[Ming]

Next time you talk to a police motorcyclist ask him where they put the radio aerial on their unmarked or surveillance bikes. They usually use a flexible one somewhere out of sight, like on or around the rear mudguard.

tom

Most of em wont have a clue !!!

The aerial listed above will pick up quite a lot of electrical noise as they have no ground .

best way would be to make your own

 

[roddy]

Sorry for the hi-jack but

The aerial listed above will pick up quite a lot of electrical noise as they have no ground .

the aerial is 2x 1/2 wave poles doesn't this configuration cancel out noise ?

best way would be to make your own

a 1/2 wave aerial will be roughly 12.5 inch's for 446 MHz, since this isn't too obtrusive I would probably favour this as a whip aerial, but how to mount it as what would you use as the ground, I was under the impression that using the bike bodywork as ground was a bad idea

how would you do this ?, a straight length of wire, or coiled round something

just curious as I'm hoping to upgrade a pair of Binatone radio (MR620) more as a technical exercise than anything else.

cheers

 

[scubaGSA]

Most of em wont have a clue !!!

The aerial listed above will pick up quite a lot of electrical noise as they have no ground .

best way would be to make your own

Thanks for all your help, it seems the answer is to make my own, great if only i had any idea where to start ?????

 

[Ming]

Allegedly ..........


Get the length of RG 56 cable you require Bnc or tnc at one end for conection to the radio .

run the other end to the back of the bike (not the front on BMW's as they are notoriously noisey from an electrical point of view abs and ecu etc,)

strip back approx 20mm of the cable twist the braided outer and crimp a lengh of cable to this long enough to reach a ground point on the frame of the bike .

you should now have 20mm of nylon coated inner strip back about 10mm of nylon so the ground 10mm further back.

Take another piece of RG56 cable and strip out the centre and the outer leaving you hopefully with a length braided copper approx 150-155mm in length .

flatten it key it (run sandpaper over it to roughen it ) then solder this to the 10mm of inner on the end of the lead coming from the radio (taking care not to put too mouch heat in hence melting nylon inner )

then seal this in the rear corner of the inside of the mudguard with black silicon sealer .

then go and buy a non reflective rear number plate (sorry clive another reason to replace a perfectly good plate ) as some plate restrict transmission .


dont forget to connect the other end to the radio

Apparently thats how its done