Antenna ID

[PaulB]

Any idea what this antenna is?  I'm wondering if it is from the ADF I had removed a few years ago.

 

 

[carusoam]

Look at your tail, do you see a similar looking VOR antenna there?

Probably not.  If no, it's your VOR antenna.  What nav radio do you have?

I am not a mechanic, and my VOR antenna is on my tail.

Best regards,

-a-

[PaulB]

9 minutes ago, carusoam said:

Look at your tail, do you see a similar looking VOR antenna there?

Probably not.  If no, it's your VOR antenna.  What nav radio do you have?

I am not a mechanic, and my VOR antenna is on my tail.

Best regards,

-a-

VOR antenna is in the the tail.  You can see it just above the Mooney logo in the attached picture.  It's symmetrical on both sides.  

 

As far as radios go, I have a 530w and a Bendix King Nav/Com.  I believe both nav radios use the tail antenna and the two coms have separate antennas on the top of the fuselage.  When I bought the plane it had a Loran and an ADF, both of which I had removed.  I suspect the mystery antenna belongs to one of those.

[carusoam]

Would that mean it is still active but now attached to the G530W?

Best regards,

-a-

[N201MKTurbo]

Follow the transmission line and see where it goes.

[Piloto]

The antenna is the Glide Slope antenna. I removed this one and replaced with this antenna splitter

http://www.aircraftspruce.com/catalog/avpages/ramiav585.php?clickkey=30238

Connected to the VOR towel bar antenna on the vertical fin. The splitter provides dual GS and dual VOR outputs. Performance is a little bit better than before. 

José

[Guest]

6 hours ago, PaulB said:

VOR antenna is in the the tail.  You can see it just above the Mooney logo in the attached picture.  It's symmetrical on both sides.  

 

As far as radios go, I have a 530w and a Bendix King Nav/Com.  I believe both nav radios use the tail antenna and the two coms have separate antennas on the top of the fuselage.  When I bought the plane it had a Loran and an ADF, both of which I had removed.  I suspect the mystery antenna belongs to one of those.

It's a glide slope antenna, your 530 will have 4 connections, comm, VOR nav, GPS nav, and GS.  If your #2 has GS it will have 3 connections, comm, nav and GS.

Clarence

[PaulB]

23 hours ago, Piloto said:

The antenna is the Glide Slope antenna. I removed this one and replaced with this antenna splitter

http://www.aircraftspruce.com/catalog/avpages/ramiav585.php?clickkey=30238

Connected to the VOR towel bar antenna on the vertical fin. The splitter provides dual GS and dual VOR outputs. Performance is a little bit better than before. 

José

 

17 hours ago, M20Doc said:

It's a glide slope antenna, your 530 will have 4 connections, comm, VOR nav, GPS nav, and GS.  If your #2 has GS it will have 3 connections, comm, nav and GS.

Clarence

Thanks guys.  Makes sense.  And $153 for a splitter... Damn!

[bradp]

One more for the books.  What's this comant antenna next to my transponder antenna?

 

[kellym]

9 hours ago, PaulB said:

If you want to get rid of the antenna the splitter will work. However, the signal strength will be reduced, as a splitter reduces strength to each connection. However, it generally is not a problem for glide slope, where you only need under 10 miles reception range. But it can be issue to your VOR that in some cases needs as much as 100nm range.

 

Thanks guys.  Makes sense.  And $153 for a splitter... Damn!

 

[bradp]

1 hour ago, bluehighwayflyer said:

Hi, Brad. It is a marker beacon antenna. 

Your item shipped yesterday via USPS first class.  Thanks again!

Jim

Aha.  That's the only one I couldn't put my thumb on.   Kind of like my wife telling me the keys are the last place I'll look. Thanks Jim.   

[1524J]

While we're on the subject....anyone want to venture a guess as to what this controls? Even my avionics guy wouldn't speculate. It has no markings at all, at least on the outside. I suspect some type of gyro, but it doesn't spin up when the master or radio switches are on.

 

[carusoam]

Do you have a shot of the panel or a list of hardware with your plane?

That doesn't look like standard '65C equipment.  What got added later would be of interest?

Best regards,

-a-

[1524J]

12 minutes ago, carusoam said:

Do you have a shot of the panel or a list of hardware with your plane?

That doesn't look like standard '65C equipment.  What got added later would be of interest?

Best regards,

-a-

Everything works....just bugs me that I don't know what it controls.....but not enough to pull the glare shield or crawl under the panel to try to trace it.

[carusoam]

Does your HSI have a magnetometer to adjust heading automatically?

Does your stormscope have a device that detects electronic discharge?

These are the support items that are stored elsewhere in the plane, often in the tail cone.

Looks like Somebody swapped out your C's entire panel!

Best regards,

-a-

[1524J]

10 minutes ago, carusoam said:

Does your HSI have a magnetometer to adjust heading automatically?

Does your stormscope have a device that detects electronic discharge?

Somebody swapped out your C's entire panel!

Best regards,

-a-

Not sure what a magnetometer is, even if the name has strong implications.... and although I've got a stormscope I've always used Sirius XM for weather ( got caught once, never again) so I guess I'm pleading ignorance to your questions Clarence.  I know it's not wired to any antenna in the aft portion of the plane. And yes, the panel and everything forward is from a 78' J.

[carusoam]

Try to not confuse Clarence with -a-.  Clarence is knowledgable on all things Mooney.  I am just here all day...

The magnetometer is an electronic heading device.  If you have not adjusted the HSI's heading, you probably have one.  Usually mounted in the wing.

if you have a storm scope it has a sensor to detect lightning strikes.  Usually mounted in the tail cone.

How's that sound?

Best regards,

-a-

[1524J]

Sorry Anthony.....should think before I type.  Clarence and you are both extremely knowledgeable! It may well be the sensor for the stormscope. 

[Piloto]

The device in the tail cone is the magnetic sensor for the compass indicator to the left of the audio panel. Disconnect the cable attached to it and check the compass indicator while turning.

José

[1524J]

2 minutes ago, Piloto said:

The device in the tail cone is the magnetic sensor for the compass indicator to the left of the audio panel. Disconnect the cable attached to it and check the compass indicator while turning.

José

I'll try that. Thanks Jose. 

[Piloto]

You can also check it by positioning a magnet next to it and checking the compass indicator.

 

[Hank]

3 hours ago, 1524J said:

Not sure what a magnetometer is, even if the name has strong implications.... and although I've got a stormscope I've always used Sirius XM for weather ( got caught once, never again) so I guess I'm pleading ignorance to your questions Clarence. 

You do realize that the StormScope shows live data, just a second old,while XM and ADSB weather data can be 20 minutes older than the time shown on the screen, right? It wasn't the StormScope that caught you. A lot can happen to a maturing thunderstorm in twenty minutes!

My C has a slaved compass way over at the left end of the panel, and the unit that drives it is in the tailcone, not the wing. But I'm sure much changed between my 1970 plane and your 1978 model. Besides, no have HSI, neither.

[jetdriven]

Yup, Stormscope data is valuable,   Relying on ADSB while in clouds in foolhardy, while XM is plain suicide.

you gonna navigate this with 20 minute old data?

Edited April 5, 2016 by jetdriven

[Guest]

5 hours ago, 1524J said:

Everything works....just bugs me that I don't know what it controls.....but not enough to pull the glare shield or crawl under the panel to try to trace it.

As Jose has pointed out, it is the sensor for what is called a Gyro sun(spelling)? compass system.  There was one in my Mooney as well, it was removed when I did the panel.

Clarence

[jetdriven]

Its called a flux gate.  Basically it senses magnetic force and aligns the DG or HSI gyro card with magnetic north.