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radio

Postby johnboy » Sun Oct 30, 2016 2:13 pm

Hi having some interference with my radio and have found that one of the push to talk wires is to earth. is this right??
Thanks John.
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Re: radio

Postby Garyo » Sun Oct 30, 2016 5:29 pm

Would not of thought so, but check the schematic of your radio, this will tell you
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Re: radio

Postby Steevo » Mon Oct 31, 2016 9:35 am

The PTT wire should go to earth, but only when you press the PTT button. When the PTT button is not depressed, the wire should be open circuit.
Jabiru J160 & Jabiru SPL-450
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Funke ATR833 OLED/Dittel KRT2
Flight DataSystems GD-40 CO Monitoring
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Re: radio

Postby johnboy » Mon Oct 31, 2016 7:21 pm

Ok so mine is ok then cause I disconnected the PTT sw and one of the wires was to earth....
so I,ll elsewhere for the interference ..
Thanks :(
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Re: radio

Postby Steevo » Tue Nov 01, 2016 9:52 am

What sort of interference is it (i.e. clicking noise, whining noise etc)?
Jabiru J160 & Jabiru SPL-450
PS Engineering PM3000 Intercom
Funke THT800H OLED/Trig TT22
Funke ATR833 OLED/Dittel KRT2
Flight DataSystems GD-40 CO Monitoring
PoweFlarm Core
PilotAware
Garmin 496 GPS and SkyDemon
MGL Xtreme EMS
TruTrak Autopilot
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Steevo
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Site Admin
 
Posts: 254
Images: 2
Joined: Fri Feb 06, 2015 2:56 pm
Location: Wickford, Essex
Aircraft: Jabiru UL-450

Re: radio

Postby johnboy » Tue Nov 01, 2016 6:28 pm

its when I push the PTT switch loud interference
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