rhtrudder Posted April 28, 2021 Share Posted April 28, 2021 Mate just bought a jab with a microair radio, for some reason the display lights up when the avionics is switched on but no frequencies show up also when he turns off the knob on the set the display stays on ,the aircraft is new , any ideas Link to comment Share on other sites More sharing options...
RFguy Posted April 28, 2021 Share Posted April 28, 2021 either very low voltage to the radio, or sick radio. if a sick radio. probably a fairly simple fault. glen Link to comment Share on other sites More sharing options...
flymate Posted June 20, 2021 Share Posted June 20, 2021 Hi,,I need help with a used Microair 760 that a friend just installed. . It has NO intercom. Found few versions of the manual on the net and they all mention an intercom. I'm 'guessing'' it is quite old as there is no ''revision'' marked on the sticker , just the serial # : 8953 I found a '' Revision K 01/2000 '' manual that has a section about the intercom. [ ?? ] the ''revision Q '' manuals on the net talks about a MENU.... no luck there thanks for the help Jacques Link to comment Share on other sites More sharing options...
RFguy Posted June 20, 2021 Share Posted June 20, 2021 Jacques Does normal radio communication work fine? Does it work fine from BOTH headsets ? Do you know if one user is hooked up to speaker, not headset output ? maybe provide us a list of wires and pins that got connected. glen Link to comment Share on other sites More sharing options...
flymate Posted June 20, 2021 Share Posted June 20, 2021 Hi Glen, yep, radio works fine (so far,, only ground test done) passenger headset has no PTT connected, so can't test it. But the radio seems to works normally ...as a radio. I plugged 2 headsets in a portable intercom which is plug in the pilot side jacks..: all good speaker is NOT connected thanks Link to comment Share on other sites More sharing options...
RFguy Posted June 20, 2021 Share Posted June 20, 2021 next, check if passenger can talk and listen on the radio (can use pilot PTT) that will tell use if the passenger headset is connected to the radio in both directions Link to comment Share on other sites More sharing options...
flymate Posted June 20, 2021 Share Posted June 20, 2021 (edited) went to check.. yes passenger side receive and transmit when I turn it on, the screen says MICROAIR 760 V2 Edited June 20, 2021 by flymate Link to comment Share on other sites More sharing options...
RFguy Posted June 20, 2021 Share Posted June 20, 2021 but no intercom... I have seen people connect one headset to the speaker output, which is NON intercom..... so intercom works one work. which way does the intercom not work ? one or both ? Link to comment Share on other sites More sharing options...
flymate Posted June 20, 2021 Share Posted June 20, 2021 both Link to comment Share on other sites More sharing options...
RFguy Posted June 20, 2021 Share Posted June 20, 2021 do you have side tone in the headphones when talking on the radio ? Link to comment Share on other sites More sharing options...
RFguy Posted June 20, 2021 Share Posted June 20, 2021 there are a couple of jumpers and options, I will look at the schematics when I get to the workshop today. Link to comment Share on other sites More sharing options...
flymate Posted June 20, 2021 Share Posted June 20, 2021 yes,,sidetone works fine thanks Link to comment Share on other sites More sharing options...
RFguy Posted June 21, 2021 Share Posted June 21, 2021 I had a look at the schamtic diagram sidetone work son on BOTH headsets ? sure ???? rell y sure ? because the SIDETONE and INTERCOM share the same audio path internally. the only way for intercom not to work would be if one of the headsets was connected to pin 14 (headsets) , and the other to pin 15 (spkr). Link to comment Share on other sites More sharing options...
Kyle Communications Posted June 21, 2021 Share Posted June 21, 2021 This is why you will see a lot of Microair installs have a external intercom installed 🙂 Link to comment Share on other sites More sharing options...
kasper Posted June 21, 2021 Share Posted June 21, 2021 And from someone who built their own wiring harness for three micro airs and counting RFguy is correct. Side tone is the intercom on the radio and if you absolutely follow the wiring diagram they work. In one install I had to adjust the side tone pot - access through the hole on the side and adjustment is set out in the manual. check your wiring to the schematic and if it’s all ok you work through the side tone adjustment. or as Kyle comms says your alternate is don’t use side tone to intercom and add seperate intercom. Link to comment Share on other sites More sharing options...
flymate Posted June 21, 2021 Share Posted June 21, 2021 9 hours ago, RFguy said: sidetone work son on BOTH headsets ? sure ???? rell y sure ? because the SIDETONE and INTERCOM share the same audio path internally. yes sure..just went to double check. I will look at the sidetone ajustment when the owner come later this week. then,, I should be able to train him on his new Savannah 🙂 no throttle and brakes on the right side,,so intercom is a must Link to comment Share on other sites More sharing options...
FlyBoy1960 Posted June 22, 2021 Share Posted June 22, 2021 when adjusting the side tone make sure to use a plastic bladed screwdriver because I was walking past a hangar one day to hear a lot of swearing and stuck my head inside and the guy was using a jewellers screwdriver and it slipped off whatever he was adjusting and went on to the circuit boards, he heard a loud bang and then saw smoke ! Expensive lesson to learn 1 Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now