Dual VOR Display

[GalinHdz]

I would like to see the capability to display dual VOR/GS's on the Dynon systems. Either putting both VOR/GS signals on one display or put each signal on a individual displays when linked together. I am looking into putting a DEK-180 and a D-100 linked together with a HS34. Being able to display two VOR's makes old fashion navigation a lot easier, but don't take away the GPS capability.

 

[dynonsupport]

We can display the bearing to a second VOR at the same time as we show a primary VOR. The only thing we can't do is show the CDI to two VOR's at the same time. This basically achieves the same thing, since what you want is to be able to know when you are on a specific radial on the second VOR, and the bearing pointer does this.

 

[GalinHdz]

But can you do an airborne dual VOR check like this? It has to be two independent (units independent of each other except for the antenna) in order to be legal. Does this qualify?

 

[dynonsupport]

Not sure if I understand exactly what you are asking. Are you saying you need to tune two VOR's at exactly the same moment and know exactly how many degrees off each one you are? If so, yes, we can do that, but it does depend somewhat on what radios you have in the plane. We can't do that with two KX-165's, but we could with two SL-30's, or even one SL-30 and one KX-165.

From our understanding, there really is no "legal" when it comes to experimental aircraft in the USA. You, as the builder, decide if the aircraft is properly equipped for its mission. You don't even need to have one VOR radio in a lot of cases.

 

[GalinHdz]

In order use a VOR for IFR flight, you have to check the accuracy of your VOR system at least every 30 days. One of the most common methods is by using one VOR against the other.

FAR 91.171 states: "If dual system VOR (units independent of each other except for the antenna) is installed in the aircraft, the person checking the equipment may check one system against the other in place of the check procedures specified in paragraph (b) of this section. Both systems shall be tuned to the same VOR ground facility and note the indicated bearings to that station. The maximum permissible variation between the two indicated bearings is 4 degrees."

It has nothing to do with the aircraft category, it applies to all civil aircraft. Besides providing 100% redundancy, being able to do an airborne VOR checks is just another reason I would like see this feature in future DYNON products. I can dream about it!
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[dynonsupport]

We do exactly what you want. We can show you the bearing from two VOR radios at the same time.