CB antenna through roof - is it practical?

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John:

Now you're talking - good call. Antenna mount is still important but a bit less than with HF. You could still do the roof mount as well - the NMO can be used to run any common antenna.

I'm still trying to figure out how to do APRS with my truck - I've now found a emulator program that takes signal from one GPS and 'splits' it to multiple programs (e.g., my Garmin Road software, MS Street, Fugawi, OxiExplorer and - ideally - APRS)

Here is my set-up.

http://homepage.mac.com/hmckee/Radio/PhotoAlbum4.html

Cheers, Hugh
 

That is so cool - thanks for the detailed pics. I hope you will post some additional ones. They should help me figure out where to put the gear in my 96 LX.

I kind of like the idea of a clean dash mount installation, but I don't want to scrap that great Lexus stereo. So a remote mounted transceiver with a small control head makes a lot of sense. Are they very common with the 2 meter radios and is one particular brand or model better in your opinion, for a raw newbie just learning the ropes? I would probably stick the remote transceiver under the driver's seat, but the rear compartment makes more sense from a protection/ theft deterence standpoint. Does it ventilate well enough to prevent overheating? Seems like on a hot summer day it would get toasty in there.

I'm sure you thought about mounting the control head down at the center console behind the parking brake on a RAM mount I'm not too sure I like it up by the mirror, and if it were low down you could toss a jacket over it to hide it from prying eyes, without having to remove it completely. Would it fit there, and could you see it well enough while on the road? Maybe I should just ask you, please just tell me why I need to mount it up high?

BTW, I also have a Milford Cargo Barrier. It's a fine piece of equipment and I'm glad to see it in other trucks.

John Davies
Spokane WA
 
You will be much happier with a 2 meter for the type of use you plan to do. If you want to later you can add a cb. Good luck.
 
That is so cool - thanks for the detailed pics. I hope you will post some additional ones. They should help me figure out where to put the gear in my 96 LX.

I kind of like the idea of a clean dash mount installation, but I don't want to scrap that great Lexus stereo. So a remote mounted transceiver with a small control head makes a lot of sense. Are they very common with the 2 meter radios and is one particular brand or model better in your opinion, for a raw newbie just learning the ropes? I would probably stick the remote transceiver under the driver's seat, but the rear compartment makes more sense from a protection/ theft deterence standpoint. Does it ventilate well enough to prevent overheating? Seems like on a hot summer day it would get toasty in there.

I'm sure you thought about mounting the control head down at the center console behind the parking brake on a RAM mount I'm not too sure I like it up by the mirror, and if it were low down you could toss a jacket over it to hide it from prying eyes, without having to remove it completely. Would it fit there, and could you see it well enough while on the road? Maybe I should just ask you, please just tell me why I need to mount it up high?

BTW, I also have a Milford Cargo Barrier. It's a fine piece of equipment and I'm glad to see it in other trucks.

John Davies
Spokane WA

John - All good questions. Here are some thoughts:

- Most of the manufacturers will make a detachable head version of a 2M radio. It may not be a really basic version (ie just 2M) as they often are dual band, etc. You will also pay more for the feature (ie a bit more $ for the same features). IMHO, I find the mounting ease and theft prevention value of a remote are worth the added cost. The good news is that both the head unit and the box will be a lot smaller for a 2M radio. IIRC, someone makes a remote 2M radio with a very small control head.

- All of the major manufacturers are fine. I have both a Kenwood hand held and the Yaesu featured in the link. ICOM is also fine. A lot of it comes to personal preferences, etc. Ideally, go to a store and have a look at all the radios before you buy anything. That said, in the near term, I would just go for a relatively basic dual band (2M and 70cm) radio. It will do lots and lets you ease into the hobby. You can still do APRS with a GPS, TinyTraker etc. I love the Kenwood APRS unit, but it is expensive.

- Some considerations on features: dual band with ability to monitor 2 frequences at the same time (ie monitor a calling freq while operating on a receiver), alpha memory tags, reasonable number of memory locations (200+), wide freq receive (ie ability to monitor EMS freq, FRS, marine, air, etc), big tuning knob (important for me!), reasonable scanning capability (it will never match a scanner's capabilities, but they are useful)

- The rear compartment mount is fine for receiving, but when I'm operating I tend to leave the compartment lid off.

- The head mounting location is also a personal preference. Most of the new radios use menu systems for many operations = you need to see what's going on with the radio. A friend of mine has his mounted low on the console, and I find it hard to see and operate. The dash mounts (in the radio area) are better, but still a bit low for me to easily glance at the radio and operate. For me, the high mount allows me to maintain a reasonable 'heads up' while driving to keep my eyes out of the 'cockpit'. So, I can be driving and easily glance at the radio to see what's happening.

- The way I mount the head, I can have it fully "up" and it doesn't block the rear view mirror and still allows me to access the sunroof controls. The "down" location is more for trail use but brings the radio closer to eye level

- Finally, for theft, my personal preference is to never leave the control head in the truck. In this location, I can easily pop it off to go into a store, etc and just leave the RAM mount and the box in the back (covered). In general, the head unit and the mount are completely removed (ie parked at home) and I tend to take all of the antennas off as well.

Yes, the Milford is great. It was the first "mod" I installed given that I often have three kids in the second row, lots of gear (see point on three kids!), and a dog. Makes me feel a lot better with luggage in the back and it's a great place to store antennas!

Cheers, Hugh
 
john,

Those are some interesting gadgets. If I read the descpriptions correctly, I can connect the tinytrack thing to my gps and my 2M radio then someone else at home can track me using a software of some sort. Wow!
 
john,

Those are some interesting gadgets. If I read the descpriptions correctly, I can connect the tinytrack thing to my gps and my 2M radio then someone else at home can track me using a software of some sort. Wow!

Wow indeed, but it doesn't work quite that way. I'm new at this but I've read for several hours, so I think I'm correct ;)

You can get a plug-in device (TNC, I think) to act as a digital modem for your 2 meter radio. That will allow you to send the signals provided by your gps up to the APRS satellite system. The Kenwood dual band radio I was talking about already has that built-in.

The TinyTrack is a totally self contained 300 mw automatic transmittter. With gps input (like from the little accessory gps they sell there) it sends a 1/3 second burst at programmed intervals. It will step on other transmissions, but the low wattage makes that a minor issue. The beauty of the thing is it's small size and automatic operation. You can throw it in a pack and go mountain biking and it tracks you with no user inputs, other than having to switch it on. For 4x4 use when you already have a powerful 2 meter radio, it probably would be more versatile to buy an appropriate black box.

For more info check out the Testionials and Links sections at the Home Page:
http://www.byonics.com/

There's also a Yahoo support group.

However, as I mentioned, you must be a licensed Ham to operate the TinyTack and to use (or for your your family to use) the various specialized tracking pc programs, mainly because the system tracks by your Call Sign. ANYone anywhere can access the free websites and see where you are at any particular moment. It takes specialized (often free) programs to actually show your track. I think. Here's a free one I found. Why don't you try it out? (I couldn't.)

http://www.ui-view.org/

"UI-View uses bitmap images for its maps. Also, the 32 bit version has full support for Undertow Software's Precision Mapping CD atlas version 5 or 6, allowing you to zoom to street level anywhere in the USA. Their newly released version 7 is also supported, now that PMapServer7 by Bill Diaz KC9XG has been released. Several screenshots can be seen at www.billdiaz.dynip.com."

Here's a screen shot from that linked page (I don't know how it shows the track)

PMap71Topo1.png


John Davies
Spokane WA
 
Last edited:
John - All good questions. Here are some thoughts: SNIP

Hugh, thanks again for the great info. It should really help with my installation, whenever that might be.
 
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