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AART: Awesome, Another Radio Thread!

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5 replies to this topic

#1
AdvRovr

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I have an Icom IC-2700H 2m/70cm mobile rig coming to my door this week. It's a 50W rig (35W on 70cm) with the separation kit, mounting brackets, mic, etc. I'm excited for the extra wattage and the x-band repeat. 

 

Questions are: 

-Testing: How do I go about properly testing a used rig to make sure everything works as expected? If there are any defects, I want to know right away so I can resolve quickly. 

 

-Antenna: My Nagoya is rated to 10W so I need an upgrade. I've been looking at Comet SBB5 and Larsen NMO2/70C. Those are both over 3' long, if I mount one to the roof rack am I just asking to break it, or should it be fine? 

 

-Any other thoughts or suggestions on mobile rigs that haven't been covered elsewhere?

 

$_57.JPG

 


Chad // Instagram: @AdvRovr
2009 Range Rover Sport // 2001 BMW 330Ci // 2000 Toyota Land Cruiser // 1996 Triumph Tiger 900

FOR SALE: Built 1997 Range Rover 4.0 // 2006 BMW 330i 6MT 


#2
TomOwen

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Congrats!! As for testing, I'd say basic test is plug in some known frequencies for simplex and repeaters in your area and "poll the listeners". Not uncommon and a very helpful hobby so your likely to get good response if done within the proper etiquette ;-) Some repeaters have a signal check (local to me has one) but other hams will tell you how it sounds etc... As for the details of every knob, light and feature, I don't have a good answer there...

As for antenna, I started with what has become the club standard for mobile rigs which i already forgot, ... Diamond, dual band, black NMO mount... solid choice. But when I relocated from spare tire mount (radiating into the rack) to mount off the side of the rack, I was told about the Comet SB1 http://www.universal...mantm/3914.html 16.5" tall rubber dicky type antenna. It has taken a few whacks and I bent and has come out just fine. As for range, It's plenty of range on the trail, I can hit Diablo from Menlo Park, etc... I don't think it has the range of my longer Diamond but for my use, it stays on the truck and the Diamond is IN the truck when range is needed.
one guys opinion.... Tom


NCLR Board Member
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Tom Owen
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__________________________________________________________________________
'96 Discovery I, 122k, 5sp, RoverWare Bumper, Winch, ARB, BFGs, LEDs, OMEs, SD, etc...

On a slow transition from Carpool to Trail with the help of this Club

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#3
GraemeWare

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Chad,

 

The Larsen is a great antenna.  Being a loaded 1/2 wave on 2m it will work well on your RRC with an aluminum roof (you don't need a ground plane for it).  It won't get out as well as my 5/8 wave, but then you can't exactly put a mag mount on your roof can you?

 

Graeme


Graeme Ware -- San Carlos, CA

1990 Range Rover Classic - LT230 Transfer box, Warn winch, 2" lift, 235/85-16 Dunlop MUD Rovers, "Blue Submarine"
1996 Discovery 1 (R380 Manual Transmission, Ashcroft under-drive, RoverWare rear bumper, 33x12.5-15 BFG ATs) -- we call her "Katrina" -- Fordyce 7.5 mile survivor
1999 Discovery 2 (D1 CDL Linkage, 265/75-16 BFG A/T KO, RoverWare front and rear bumper)
1993 Jaguar XJS convertible; 1971 Triumph GT6; 1959 Morris Minor convertible
other assorted British pot metal ...


#4
ndamico

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Chad I bought an antenna analyzer if you want to come down. If you go uhf mount I have 3 different ones to test with too.

Sent from my KFTHWA using Tapatalk

Nick

2010 LR4 HSE-Lux/HD. Compos w/ Toyo Open County AT2 265/65R18, IIDTool, Baja Rack.

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#5
AdvRovr

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My plan is to do a solid mount to the roof rack. I need to do more reading up on ground planes and the like, but can you not just wire the antenna up to a ground point?

 

Tom, I'm thinking of more objective tests, like is it still putting out the proper wattage? And....beyond that, I don't really know what else I should even be testing at this point. I will definitely try some subjective tests like you mentioned though.

 

Regarding antennas, I know height can make a difference just in getting the signal over any terrain obstacles, which is why I was looking at taller ones. I suppose another option would be to stick with a shorter one for most everything and just lifting an Ed Fong roll-up style deal when parked if needed. 

 

Thanks Nick, I may take you up on that.


Chad // Instagram: @AdvRovr
2009 Range Rover Sport // 2001 BMW 330Ci // 2000 Toyota Land Cruiser // 1996 Triumph Tiger 900

FOR SALE: Built 1997 Range Rover 4.0 // 2006 BMW 330i 6MT 


#6
AdvRovr

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Every time I go to Radio Shack I'm reminded of exactly why they went bankrupt. Completely useless - they dedicate about 6 sqft out of a 2500 sqft location to components. I think I cobbled together enough to do some testing on the new rig though.

Also, I'm floored by the radio shipping. I paid for the auction on Saturday afternoon, and the radio arrived at my door from Oregon before I got home Monday. Kudos to the seller.

Chad // Instagram: @AdvRovr
2009 Range Rover Sport // 2001 BMW 330Ci // 2000 Toyota Land Cruiser // 1996 Triumph Tiger 900

FOR SALE: Built 1997 Range Rover 4.0 // 2006 BMW 330i 6MT 





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