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Alan Pilot
John 1210
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John 1210
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John 1210


Call Sign : 108CT234
Posts : 19
Times Thanked : 0
Join date : 2019-10-26
QTH or Location : Kirkintilloch/ Glasgow
Equipment Used : YAESU FT450D 6mtrs
Age : 64

Mobile help Empty
PostSubject: Mobile help   Mobile help Icon_minitimeWed Feb 05, 2020 9:40 pm

Looking for some advice
Hi members I am going to go mobile with my
yaesu 450d . So looking for some help . I have connected power lines to battery.
And my antenna on roof ,
But do I still need to run a earth wire to the earth screw at back of th 450d.
Every help will be very much appreciated.
Many thanks john
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Alan Pilot
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Alan Pilot


Call Sign : 163-CT-220...MW7TTA
Posts : 2518
Times Thanked : 69
Join date : 2019-11-19
QTH or Location : Anglesey North Wales
Equipment Used : Yaesu FT-991A,,Yaesu FTDX-10,,Icom ic-7300,,Anytone AT-D878UV PLUS",,LINCOLN II+.
Age : 150

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PostSubject: Re: Mobile help   Mobile help Icon_minitimeThu Feb 06, 2020 9:05 am

I wouldn't think you need it.
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John 1210
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John 1210


Call Sign : 108CT234
Posts : 19
Times Thanked : 0
Join date : 2019-10-26
QTH or Location : Kirkintilloch/ Glasgow
Equipment Used : YAESU FT450D 6mtrs
Age : 64

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PostSubject: Re: Mobile help   Mobile help Icon_minitimeThu Feb 06, 2020 11:55 pm

Would it do any harm if I connected it to the earth of my vehicle
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GaryWilson
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GaryWilson


Call Sign : 26-CT-1836 Ham 2E0GGQ
Posts : 4216
Times Thanked : 359
Join date : 2019-06-27
QTH or Location : Redcar, North Yorkshire.
Equipment Used : Radios & Wires & Stuff!
Age : 59

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PostSubject: Re: Mobile help   Mobile help Icon_minitimeFri Feb 07, 2020 5:36 am

Hello John,

The earth on the back of the 450D is an RF earth. You would usually connect it to a ground spike in the garden outside the shack. I wouldn't connect it to the electrical earth of your car that's not what it's for. I'm not an expert in mobile installations by any means but I think for a mobile install it's left unconnected (As is mine at home with no RF problems)

73's

Gary.
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https://www.qrz.com/db/2E0GGQ
26TC62
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26TC62


Call Sign : 26TC62, 26CT2817
Posts : 141
Times Thanked : 29
Join date : 2019-06-27
QTH or Location : Portsmouth
Equipment Used : Yaesu 891, 10m pole, wire 5/8, T2LT

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PostSubject: Re: Mobile help   Mobile help Icon_minitimeFri Feb 07, 2020 7:42 pm

According to the schematic, the ground terminal is DC ground and RF ground. Therefore whatever you decide, it shouldn't make any difference.
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BigTone
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Call Sign : G8YMW or 26CT4498
Posts : 92
Times Thanked : 17
Join date : 2019-07-16
QTH or Location : Lincoln and Finningley
Equipment Used : CRT 9900, Icom 705, Kenwood TS570, Icom 910
Age : 69

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PostSubject: Re: Mobile help   Mobile help Icon_minitimeFri Feb 07, 2020 11:53 pm

k0bg.com is your friend.
Look (if you haven't) to bonding. eg Body to bonnet (the hinges are not a good RF conductor) and several places along the exhaust to body (to save re radiating from the pipe)

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Northern Crusader
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Call Sign : M0GVZ / 26CT1760
Posts : 531
Times Thanked : 35
Join date : 2019-11-13
QTH or Location : IO94SA
Equipment Used : Icom 7300, TS480, President McKinley, Albrecht AE6110, CRT Mike
Age : 53

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PostSubject: Re: Mobile help   Mobile help Icon_minitimeTue Feb 11, 2020 5:30 pm

Those little ground screws on the backs of radios serve no purpose and are only there to keep old timers who don't know better happy. If connecting a ground to that screw solves a problem your problems started long before the radio, at the antenna feedpoint to be exact.
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