I asked something similar, and from a pragmatic perspective it will change the SWR. However I’m unclear whether or not it’s to an unacceptable degree or a purist degree trying to find the optimal placement on a vehicle.
GMRS Radio
- Thread starter Dino - KX6D
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I asked something similar, and from a pragmatic perspective it will change the SWR. However I’m unclear whether or not it’s to an unacceptable degree or a purist degree trying to find the optimal placement on a vehicle.
MountaineerTom
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Another question, does anyone have the MXT-275? If I understand the description correctly, the speaker is built into the mike. Is it clear and have good sound?
Im considering that one as well as the MXT-115.
Im considering that one as well as the MXT-115.
Depends.....
Since we’re talking 27mhz and 460mhz the CB antenna will always be a reflector of the GMRS. The GMRS is too small and too close to the CB to effect it’s signal.
Read up on yagi antenna design. https://en.m.wikipedia.org/wiki/Yagi–Uda_antenna
Operating frequency and output power are the variables.
I mounted my new MXT275 on the divers side and then needed a place for the mic to plug into. Since I didn't really need 2 cigarette lighter connectors I removed one and installed a plug for the GMRS Mic
It actually has a speaker in the mic and the head unit. You can select which speaker you want, or select both speakers.
The antennas will cause problems, I learned this the hard way. I had my GMRS and CB radio mounted on the same mount, screwed up both SWRs extremely. Im going to buy a mount for the opposite tailight. That should be a decent amount of space so they wont interfere
MountaineerTom
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That's a pretty slick set up. Thanks for sharing.
Did you screw the mounting bracket down there under the dash? If so, I'm guessing that area has some space behind it and you don't have screws sticking out of the side of your Jeep.
That's a great idea for the mic plug.
MountaineerTom
LJ Enthusiast, Retired USAF Weapons Loader
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MountaineerTom
LJ Enthusiast, Retired USAF Weapons Loader
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Good to know. Thank you for the info. I have a tail light mount on the passengers that isn't being used, so I could possibly make that work.
For those interested on GMRS equipment and good info;
https://www.buytwowayradios.com/
GMRS equipment its as its interest peak, prices have been double up in the past months.
Trending brands
Wouxun
Nagoya (look for the G at the end of the part number, means is tuned for GMRS band)
Power; 15 watts where 85% runs on handheld limited to 5-8 watts is King.
https://www.buytwowayradios.com/
GMRS equipment its as its interest peak, prices have been double up in the past months.
Trending brands
Wouxun
Nagoya (look for the G at the end of the part number, means is tuned for GMRS band)
Power; 15 watts where 85% runs on handheld limited to 5-8 watts is King.
The issue its that the GMRS antennas need ground plane, this small bases does not provide such a good ground plane so the CB antenna mounted besides becomes the ground plane but vertically affecting both antennas. Separating the antennas yield good results, perhaps GMRS optimal will be in the roof but TJ’s... thats why the stubby from Midland mounted on the hood is a great option when paired with a good radio.
Power is not king.
People can bounce a signal off of the moon with 5w. A high elevation repeater over the average terrain is king. To get the best signal out you need a high gain antenna mounted on top of the vehicle.
Handhelds are limited in power BY LAW. The energy transmited by a radio is the same as a microwave oven but at a lower frequency. Do you want 40w of energy 2” from your brain?
Yes I did its double walled in that area, so no screws sticking out the other sideThat's a pretty slick set up. Thanks for sharing.
Did you screw the mounting bracket down there under the dash? If so, I'm guessing that area has some space behind it and you don't have screws sticking out of the side of your Jeep.
That's a great idea for the mic plug.
I run the 275 as well. It also supports an external speaker, which I mounted right above the rear view. You can also select the external speaker and the mic speaker - which works very well. This feature was not in the manual - I had to call Midland to figure that one out. The 275 is much louder than my CB using the same external speaker.
OP
I took a trunk lip mount apart and replaced one of the windshield frame screws.
MountaineerTom
LJ Enthusiast, Retired USAF Weapons Loader
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I like that spot, but I have a mount with spot lights there. I've thought about the mount that Midland calls a "ditch light mount" and sticking it out to the side.
MountaineerTom
LJ Enthusiast, Retired USAF Weapons Loader
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Where did you get the plug you put in the dash for the mic?
I don't even know what to call it to google it.
I think it’s a standard Ethernet, so a flush mount cat5 may do it.Where did you get the plug you put in the dash for the mic?
I don't even know what to call it to google it.
This is the one I got for my Uniden install
https://www.amazon.com/gp/product/B07QJV1YQJ/?tag=wranglerorg-20
https://www.amazon.com/gp/product/B07QJV1YQJ/?tag=wranglerorg-20