Aerials Again

Fudpucker

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Some time back I read of a scoundrel who dared to fit a remote aerial behind his/her number plate. It was either attached to the rear of the plate or the mudguard assembly. I can't remember where I saw it. The memory's not so good now I've past fifty. Hypotheticaly speaking. As no law abiding citizen would go down this slippery slope towards a life of crime. What would be required to perform the same using a TK3201. I'm just curious as to how the criminal mind works......F
 
The Panorama antenna in that link is supposed to be very good. Its a GPI antenna so doesn't get messed up witht he bike as a groundplane and is also suitable for use on either 446MHz PMR446 or 449MHz UK general frequencies (although it is technically illeagal to use an extaernal antenna on PMR446 as you know).

A while back, somebody posted a link for a plastic dipole also form Panorama that looked good. Someone else posted a suggestion that the BMW electronics were especially susceptible to radiated interferance form radios, but they didn't quote any sources for this so I think most people ignored it.

I'm planning on fitting an external antenna for use on 449MHz UK general when I get round to it.

Cheers,
Jon
 
Fudpucker said:
Some time back I read of a scoundrel who dared to fit a remote aerial behind his/her number plate. It was either attached to the rear of the plate or the mudguard assembly. I can't remember where I saw it. The memory's not so good now I've past fifty. Hypotheticaly speaking. As no law abiding citizen would go down this slippery slope towards a life of crime. What would be required to perform the same using a TK3201. I'm just curious as to how the criminal mind works......F
Click to expand...
Does the TK-3201 have a detachable antenna?
 
I had one of those Panorama clip antennas on my VFR and my mates have them on their (sports) bikes too.
Fitted behind the number plate for that covert look. Very well made and better than shoving the radio horizontal under the seat (wrong plane)

Couldn't use it on my GS because of the metal panniers so I stuck on on top of the top box.

I had my radios modified to take a BNC antenna or cable. Not easy and I imagine the TK3201 wouldn't be either as it is supposed to be fixed, but Icom make a very similar radio with a detachable antenna so they were the donor part numbers :).

These will be for sale soon as I have changed radios to PX888's. They are F22R Icoms and I have 4 with powered Autocom leads (for sale in two pairs probably)

BTW the lenght of an 1/4 wave ant is approx 161mm from base to tip.
 
wheeledwidewebb said:
Does anyone know where you can buy the antenna that is in the article on BikersOracle.com, I have posted on there but it would appear nobody likes me (understandable). Cheers. Mel.
Click to expand...


I saw your post on Bikers Oracle but was unable to help with that particular query. The guy that has the answer is Wiz but he is probably a bit busy at the moment as they are in the process of upgrading all the forums, if you log on now you'll find it unavailable and you'll be directed to a temporary forum.
It'll be a couple of days before the forums are completed so if you still need info/help I'd suggest leaving it a few days then bump your original thread.

Bob
 
so its for a stereo system

I thought the intimation it was speed-camera or cop-finding related...
 
I make my own aerials,in fact I have just made two for 446.

I purchase the 2.5 mm whips and 3/8th screw in bases from Moonraker,run a free antenna length program,cut them a tad longer then set up a test rig and trim them for best VSWR.

enough 2.5 mm stainless whip to make several is about £4
screw in bases are £3 each

small clamp mount on rear rack and some rg58 coax fitted with whatever plug you have converted your pmr to ;) ( BNC is favourite....apparently) and bobs yer granny

I have one here but cant find a tape measure,I'll post the exact length when I can,these ones are nearly dead needle at 446.00625,my ikle vhf/uhf vswr meter aint the most accurate but the radio I was using allowed me to move up and down either side of the reference frequency and watch the vswr untill I knew I was on the sweet spot for 446.Saved a load of hacksawing:)



I had a source for tunable whips complete with micro magmount and thinet coax fitted with a bnc......these were very discrete and removable.........magnet is an inch or so in circumference and thin (about 1mm)black whip was about 4 inches long for 1/4 wave at 446.But I cant remember where I got them now...........its an age thing.
 
Ahem ..well I was using a Hora C408 and a Yaesu VX-1r but I tracked down a rexon RL-402 on ebay for £27 and I had one in my 'collection' so I was gonna fit them to my GS and wifeys R850r for touring.......they can run straight off 12v.....have a bnc connector and if you know the correct button presses can be opened up to 446:augie

I am currently using the cheap and cheerful bike to bike harnesses from maplin,OK up to 60mph but not great.......but it does plug straight in to the rexons 3.5/2.5 mm mic/ ear socket

downsides.........the radios have 3 power settings at mid and high you would almost certainly be exceeding the spec for pmr 446..........but they dont police it at all so ..............

Last year we never took the radios with us and missed them sorely........its amazing how convienient they are especially if you are in a group........someone stops for a 'comfort break' and everyone else dissapears..........

I will be fitting the antenna and radios to the bikes soon.....I will take some fotos and post them


linky for rl 402 http://www.rigpix.com/mischam/rexon_rl402.htm


minimag is like this but with a small 4 inch straight whip:http://www.qsradio.com/MM-270X.JPG


found it .watson wsm-138 :http://www.wsplc.com/acatalog/Watson_Mobile_Antennas.html
 
Nippy Normans supply Touratech, Wunderlich, Desert Fox and many other makes of accessories.
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