audio panel and nav/com alive!
I wired up the ground wires to the audio panel this morning and turned it on. Damned if it didn't work! Sandi came out and we put the headsets on to check it out. Seems to work just fine!
The last avionic equipment to tackle was the KX-155 nav/com. I needed to get the antenna's wired to it before I could power it up, so I did that. I have a nav splitter that splits the signal to NAV and GS, so I had two short pigtails coming off the back of the tray to the splitter. I'd suggest putting this pigtails on before you mount the tray as I had a hard time making the connections with the tray in the plane and wires all over the place.
I slid the radio in place, double-checked that the power and ground wires were hooked up and to the right pins, slid the radio in place, flipped the master switch and turned the power on the radio..... nuttin! UGHH! Double-checked connections.. yep all were right. Looked at wiring diagram for something I missed. The only thing I could see were two switched power in pins and two switched power out pins. The diagram shows all of these being tied together with a lead running out to the CDI for power if you need it. I didn't tie these together because I really didn't understand why they would be all tied together. So I ran two power wires from the bus into the two switched power in connections. As soon as I turned on the master swtich, the radio lit up! Well... that's odd since the power switch on the radio is OFF. I posted a message to the aeroelectric list hoping someone might have an answer. Then I went back out and decided to just wire it like the wiring diagram says by tying all four wires together. Well what do you know.. it worked! It looks like those power out pins feed the power in pins which feed the display.. and also the CDI when you have it hooked up. Seems like an awfully weird way of wiring things, but hey it works.
I was all excited to test out the transmit on the radio and gave sandi the portable radio and ran out to the shop, put the headset on, turned on the radio and........ uhhh.... oopss.. haven't wired a PTT button! Oh well.. false alarm.
So... audio panel is working... radio at least comes on... tomorrow I'll wire the PTT switches so I can test the transmit on the radio. If the weather is clear I may roll the fuse out in the yard and see if I can pick up any planes flying around. I'm too far from any airport to pick up anything so may have to listen to approach control.
(Time: 4 Hours)
The last avionic equipment to tackle was the KX-155 nav/com. I needed to get the antenna's wired to it before I could power it up, so I did that. I have a nav splitter that splits the signal to NAV and GS, so I had two short pigtails coming off the back of the tray to the splitter. I'd suggest putting this pigtails on before you mount the tray as I had a hard time making the connections with the tray in the plane and wires all over the place.
I slid the radio in place, double-checked that the power and ground wires were hooked up and to the right pins, slid the radio in place, flipped the master switch and turned the power on the radio..... nuttin! UGHH! Double-checked connections.. yep all were right. Looked at wiring diagram for something I missed. The only thing I could see were two switched power in pins and two switched power out pins. The diagram shows all of these being tied together with a lead running out to the CDI for power if you need it. I didn't tie these together because I really didn't understand why they would be all tied together. So I ran two power wires from the bus into the two switched power in connections. As soon as I turned on the master swtich, the radio lit up! Well... that's odd since the power switch on the radio is OFF. I posted a message to the aeroelectric list hoping someone might have an answer. Then I went back out and decided to just wire it like the wiring diagram says by tying all four wires together. Well what do you know.. it worked! It looks like those power out pins feed the power in pins which feed the display.. and also the CDI when you have it hooked up. Seems like an awfully weird way of wiring things, but hey it works.
I was all excited to test out the transmit on the radio and gave sandi the portable radio and ran out to the shop, put the headset on, turned on the radio and........ uhhh.... oopss.. haven't wired a PTT button! Oh well.. false alarm.
So... audio panel is working... radio at least comes on... tomorrow I'll wire the PTT switches so I can test the transmit on the radio. If the weather is clear I may roll the fuse out in the yard and see if I can pick up any planes flying around. I'm too far from any airport to pick up anything so may have to listen to approach control.
(Time: 4 Hours)
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