GL1800Riders Forums banner

1 - 19 of 19 Posts

·
Registered
Joined
·
102 Posts
Discussion Starter #1
Does anyone know of a source for a gl1800 CB radio-like antenna for ham radio use?

I'd hate to drill a hole in the trunk lid for a 2 meter or 146/440 ham antenna ...

Thanks in advance.
 

·
Registered
Joined
·
1,250 Posts
If your talking about the mag base antenna types, I don't know where you would mount them. The scoot is all plastic on the outside. And I know of no dual banders that cover from 27 Mhz to 440 Mhz. Perhaps you could look around find a place to mount a clamp on. Comet and many others make a very wide variety. The "thru the glass" types would work, but you would have to glue the antenna on the bike. The glue used is almost non removeable, and would surely damage the finish. I have seen a few antennas mounted on short poles att'chd to a trailer hitch. Perhaps on the handle bars somewhere??? (btw...thru the glass mounts are VERY susceptable to generating unwanted RF. Many ops have experianced problems with onboard computer systems when using this type of mount)......
 

·
Registered
Joined
·
116 Posts
I was thinking on this the other day and looking at the radio ant on the bike now for the stereo. I was thinking of taking a regular ant like what is on the bike and cutting it down to 1/4 wave lenght for 2 meters and mount on the side where the cb ant goes.
Or buying the cb mount (the chrome one on the trunk) and taking a dual bander ant and installing the coax mounts from the comet dual bander ant I have and treading it up thru the base. Then all you need to do is thread the comet ant on. Looks a little different than the cb ant but gives you 2 or 440 meters. Or you could just buy a 2 meter ant and convert the stereo mount to accept the ant. I am going to experiment this winter.
I just bought a dual bander for my truck a few weeks ago a Yeasu 7800. It has a removeable face plate and you can intall the radio in the trunk and the face plate mounted on the pocket door with velcro, which then can be removed any time you wish.
Hope this helps get the creative juices flowing 73''.

GWLee
N4SAT
 

·
Registered
Joined
·
102 Posts
Discussion Starter #4
Radio antennas:

stickyfingers said:
And I know of no dual banders that cover from 27 Mhz to 440 Mhz. )......
TNX for the info. I would not be interested in CB band on the bike ... .I would do 2 meters or 144/440 mhz.

Bike is plastic as you all know, but I wonder if a ground wire to the frame (a lot of metal there) might work as a suitable rf ground ...

Dom In Philly
 

·
Registered
Joined
·
350 Posts
Ok guys, heads up.......... The regular Hondaline CB antenna works just fine......... I have used my 5 watt handheld for years on bike with this set up....... You just get the proper connections to hook into antenna or make your own with PL259's............ I just made my own , as I dont have CB installed on bike.........

The 2 meter only uses the portion of antenna up to center load.. just like a dual band antenna does.......... I checked the SWR and it's 1.3 thru most of the 2 meter band range.......... Works like a charm......... Just try it and see what SWR readings you get with your CB antenna........ I have done this with 2 other Wings and same SWR readings.........

I run my HT in the left box with aux hookup....... this lets me hear thru external speakers or headsets........ works really well......... Hope this helps Bob
 

·
Registered
Joined
·
868 Posts
Dom,

I agree with Bob, the CB antenna will work on 2M. I ran a 2M HT for a while, but changed to CB since most of the people I ride with are not Hams. Now I'm an Extra Class CB Radio Operator :D

Another option is staying with the rubber duck antenna if using an HT. As far as ground is concerned, use the ground located in the trunk. It's there to ground the OEM CB.

Hope this helps.

73's (ko4cx)
 

·
Registered
Joined
·
755 Posts
I am planing to use the Firestick 2M4B adapted to the Honda CB antenna base, at least to start with. The biggest problem I can see is that there will be little or no ground plane provided by the bike. One solution would be to cover the inside of the trunk with foil tape and mount a dual-band 5/8 wave in in the center. Of course if you have a trailer hitch the best installation would be a Hustler CG-144 2 mounted on the hitch.

Good luck, and please post your results.
 

·
Registered
Joined
·
381 Posts
just use a 1/4 wave coax bazooka feeder for both 144 and 440, dont forget a 1.3 swr is %11 loss or 2-3 S points.

Nigel

DE G0JKN
 

·
Banned
Joined
·
4,623 Posts
Nigelf

The standard for a S unit is 6 db.... So if you lose 2 S units, your signal is down 12 db or you have over 95 per cent LOSS !!!! And if it is 3 S units down, that is 18db down or 99 per cent LOSS !!!

Loss based on SWR is feed line loss and depends on the length of the line, Some COAX will have a lot more loss than others.

The Frame of the GL-1800 will work just fine for the ground plane on two meters and up !!! It even works well on 80 and 40 meters which I operate at times mobile on the bike !! I generally will be found on the CW portion of the band when Motorcycle Mobile !!

73 es CUL de KA7W sk
 

·
Registered
Joined
·
14 Posts
DomPA894 said:
Does anyone know of a source for a gl1800 CB radio-like antenna for ham radio use?

I'd hate to drill a hole in the trunk lid for a 2 meter or 146/440 ham antenna ...

Thanks in advance.
You might check the MARC (motorcycle amature radio club)http://www.ba-marc.org/ web page, maybe you can find some good info there or from the members who ride bikes and are Amature Radio Ops..

Poldawg
 

·
Registered
Joined
·
16 Posts
antennas

My fellow ham has his Kenwood dualbander mounted where the cd changer would go and has used the following for an antenna. he acquired a am/fm/cb splitter for combining the radio and the cb to the cb antenna, then mounted a diamond dual band antenna on the am/fm antenna base. this required butchering the am/fm base but the result is really good. the diamond will mount to a so239 barrel, with the threads of the lower half of the barrel machined off it will fit inside the chrome base. It is held there by two short (must be short enough not to contact the center conductor) machine screws. The coax rg-58 is soldered directly to slots dremeled in the bottom of the barrel and the center conductor to a pin pushed into the barrel. This thing looks like it belongs on the bike except for the load coil. The diamond and a clone being sold on e-bay both have fold-over and are about the length of the stock am/fm antenna. Tried to attach a photo fo his antenna, no luck. anyone wants a look e-mail me and will send direct. or if someone can tell me how to post a photo.
Rick
 

·
Registered
Joined
·
156 Posts
I removed both anntenna whips from the foldovers, they just unscrew with a little effort, and drilled and tapped the foldovers to 3/8 x 24 thread. Now I can use just about any antenna I want.
 

·
Registered
Joined
·
755 Posts
GL_Bob said:
I removed both anntenna whips from the foldovers, they just unscrew with a little effort, and drilled and tapped the foldovers to 3/8 x 24 thread. Now I can use just about any antenna I want.

I want to do this to add a Firestik 2-meter to the bike. Can someone tell me if both the std. and CB bases are the same? That is, if I want to tap it to 3/8 x 24 does it matter whether I get a CB antenna base or another am/fm base for the other side?
 

·
Registered
Joined
·
5,541 Posts
I installed my 2m/440 dualband Kenwood D700A last February. MARC assisted me with the install (I am also a MARC member).

years of experience in the MARC club has dictated that the best HAM radio reception will not be had by a side mounted antenna, (ie Honda's CB antenna location). Also drilling a hole in the trunk will result in nothing more than a bigger hole in the trunk when the pressure from the antenna exceeds the strength of the trunk lid.

The antenna will also require a much better ground than what is provided by Honda to the side mounted antennas.

Best reception is provided by a HAM antenna built for the frequency you wish to use. For most of our applications mounting the antenna to the most rearward postion of a metal luggage rack that has been grounded to the motorcycle frame works out the best, The mounting feet of the luggage racks have been reenforced with 2.5"x1.5" plates to prevent trunk lid cracking. It has also been found that Comet antennas are the most durable for use on a motorcycle. This has been achived by their company working with MARC to purpose build antennas designed for the special needs of motorcycles.



I have a picture album on Flickr taken during the HAM radio install on my 2005 GL1800. Perhaps these pictures will speak better than my words for installation ideas.

http://www.flickr.com/photos/paul_shivers/sets/72057594059378489/
 

·
Registered
Joined
·
16 Posts
Nice, but does the cover fit over the antenna? and does it fold over. I still would not do that to my rack, and the install represents a elevated ground by about 1/4 wavelength, not a good practice. You state the side mounted antenna to be poorly grounded, not true unless you did not remove the paint from the strap. BTW I have worked in the radio department of our local telco since 1980 on everything from dc to light literaly, I have some idea of what I speak. Grounding is probably the most important part of a good radio system.
Rick
 

·
Registered
Joined
·
5,541 Posts
VE7RY said:
Nice, but does the cover fit over the antenna? and does it fold over. I still would not do that to my rack, and the install represents a elevated ground by about 1/4 wavelength, not a good practice. You state the side mounted antenna to be poorly grounded, not true unless you did not remove the paint from the strap. BTW I have worked in the radio department of our local telco since 1980 on everything from dc to light literaly, I have some idea of what I speak. Grounding is probably the most important part of a good radio system.
Rick
Yes the motorcycle cover does fit over the antenna, it folds flat over the passengar back rest, similar in operation to the Honda antennas.

The side mount ground is obvioulsy fixable as you mentioned, (Honda seems to always do a poor job assembling in this area), but there is also a small problem of lost signal due to the position of the antenna, mostly in relation to the AM/FM antenna on the other side of the trunk. It will work, just not as well as mounting the HAM antenna further back. Then there is consideration for distance between the passengar's and rider's head and the transmissions from the Antenna. With the D700A cranked up to full power it will pump out 40 watts, I'd like to keep that amount of power as far away from my and my wife's head as possiable. I usually run low power (7-8 watts If I remember right), with all the repeaters we have around here, I don't need high power most of the time.

As fas as the rest goes, I'm relaying what we have found works best on motorcycles based on 15+ years of the club experimenting on dozens of bikes and many thousands of miles. Doesn't mean it is the only solution, just one that I know works and works very well. Obviously a motorcycle does not provide a "optimal" platform for any kind of radio, sometimes it suprises me it works at all :!: :wink:

If anyone is interested in talking to the "Real" experts in my club, MARC's website is http://www.marc-hq.org
 

·
Registered
Joined
·
206 Posts
Had my Kenwood TM-D700 mounted on my GL1500 Goldwing for years, but when I sold that bike and got my 05 GL1800 I did not initially install the radio.

When I finally got tired of the speedometer error and took the bike apart to install a speedo-healer, I figured I might as well run all the wiring I would need to put the Kenwood on the bike, but didn't really plan to actually do so at that time.

Well, it only took me two days after I had the wiring run to decide it was time to put the radio on the bike. It's nice to have it back, I did miss having it.

Thanks to folks on these forums for putting enough information out there to get my motivated to tearing into the bike enough to put the radio back on.

Built an NMO mount into my Kury trunk rack. Most of the time I will run a quarter wave UHF (about 6") which is very unobtrusive - but when I want/need a better antenna I can put a regular dual band on.

Carl
N7KUW
 
1 - 19 of 19 Posts
Top