VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics


Go Back   VAF Forums > Model Specific > RV-10
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 01-19-2018, 04:13 PM
rvdave rvdave is offline
 
Join Date: Jun 2005
Posts: 315
Default Archer Nav performance

Just started flying the 10 and as I notice things Iím looking into them. Currently noticing the archer Nav antenna on one Nav radio flags sometimes below 4000 ft. Wondering if that would be normal for vor range. It does pick up and lock into glideslope well. So donít know if itís a radio problem or not. Any comparisons?
__________________
Dave Ford
Cadillac, Mi
Reply With Quote
  #2  
Old 01-19-2018, 04:43 PM
bcondrey bcondrey is offline
 
Join Date: Jan 2005
Location: Bellevue, NE
Posts: 485
Default

There are numerous threads on the subject of Archer antennas.

Short version is that when PROPERLY installed, it works great but has somewhat less range than external catwhiskers. Important aspects of the install are routing of the wingtip lighting along the leading edge of the antenna and it should be grounded either by installing to a piece of angle on the outboard rib or under the tip attach nutplates. It should also be installed as far forward in the tip as possible without touching heat shielding, strobes and Nav lights.
__________________
Bob
RV-10 #2 99.9% Complete
Reply With Quote
  #3  
Old 01-19-2018, 04:48 PM
RV6_flyer's Avatar
RV6_flyer RV6_flyer is offline
 
Join Date: Jan 2005
Location: NC25
Posts: 2,944
Default

Quote:
Originally Posted by rvdave View Post
Just started flying the 10 and as I notice things Iím looking into them. Currently noticing the archer Nav antenna on one Nav radio flags sometimes below 4000 ft. Wondering if that would be normal for vor range. It does pick up and lock into glideslope well. So donít know if itís a radio problem or not. Any comparisons?
My Archer Nav antenna has worked flawlessly for 20-years. When installed according to directions, they work flawlessly.

Need to know the distance from VOR more than the altitude. Yes altitude can be an issue if you are too far from the VOR but typically distance is what is needed as well as the type of VOR you are using. (VOR types: Terminal = 25 NM, Low Altitude = 40 NM, High Altitude = 40 NM - 100 NM - 130 NM altitude dependent)

It is typical for my RV-6, Archer Nav Antenna, SL-30 setup to pickup VOR signal before I can hear the Morse Code at distances over 40 NM when more than 1,000 AGL over level terrain.
__________________
Gary A. Sobek
NC25 RV-6
Flying
3,300+ hours
Where is N157GS
Building RV-8 S/N: 80012

To most people, the sky is the limit.
To those who love aviation, the sky is home.
Reply With Quote
  #4  
Old 01-19-2018, 04:52 PM
RV6_flyer's Avatar
RV6_flyer RV6_flyer is offline
 
Join Date: Jan 2005
Location: NC25
Posts: 2,944
Default

Quote:
Originally Posted by bcondrey View Post
There are numerous threads on the subject of Archer antennas.

Short version is that when PROPERLY installed, it works great but has somewhat less range than external catwhiskers. Important aspects of the install are routing of the wingtip lighting along the leading edge of the antenna and it should be grounded either by installing to a piece of angle on the outboard rib or under the tip attach nutplates. It should also be installed as far forward in the tip as possible without touching heat shielding, strobes and Nav lights.
I disagree with the external catwhiskers having more range. I always pickup VOR signals with on my SL-30 and Archer Nav Antenna before the RV flying with me that has catwhiskers.
__________________
Gary A. Sobek
NC25 RV-6
Flying
3,300+ hours
Where is N157GS
Building RV-8 S/N: 80012

To most people, the sky is the limit.
To those who love aviation, the sky is home.
Reply With Quote
  #5  
Old 01-19-2018, 06:35 PM
rvdave rvdave is offline
 
Join Date: Jun 2005
Posts: 315
Default

Quote:
Originally Posted by bcondrey View Post
There are numerous threads on the subject of Archer antennas.

Short version is that when PROPERLY installed, it works great but has somewhat less range than external catwhiskers. Important aspects of the install are routing of the wingtip lighting along the leading edge of the antenna and it should be grounded either by installing to a piece of angle on the outboard rib or under the tip attach nutplates. It should also be installed as far forward in the tip as possible without touching heat shielding, strobes and Nav lights.
I didnít see anything about other grounding in the diagrams, the center conductor goes to one terminal and the grounded shield goes to the other terminal. What would be the purpose of another ground?
__________________
Dave Ford
Cadillac, Mi
Reply With Quote
  #6  
Old 01-19-2018, 06:49 PM
bcondrey bcondrey is offline
 
Join Date: Jan 2005
Location: Bellevue, NE
Posts: 485
Default

Section 3.3.5 & 3.5.1 and figure 1 where it shows “overlap” and “end of metal wing”

Here’s Bob Archer’s explanation for how this antenna operates. Scroll down or search for “gamma match”. https://sportcraftantennas.wordpress.com
__________________
Bob
RV-10 #2 99.9% Complete

Last edited by bcondrey : 01-19-2018 at 06:55 PM.
Reply With Quote
  #7  
Old 01-19-2018, 07:04 PM
ChiefPilot's Avatar
ChiefPilot ChiefPilot is offline
 
Join Date: Jan 2005
Location: Twin Cities, MN
Posts: 1,481
Default

Quote:
Originally Posted by RV6_flyer View Post
I disagree with the external catwhiskers having more range. I always pickup VOR signals with on my SL-30 and Archer Nav Antenna before the RV flying with me that has catwhiskers.
I agree. I can pick up VORs at distances well beyond their service volume with the archer antenna on an Avidyne IFD. But it was installed according to directions, as I suspect your was.
__________________
Brad Benson, Maplewood MN.
RV-6A N164BL, Flying since Nov 2012!
If you're not making mistakes, you're probably not making anything
Reply With Quote
  #8  
Old 01-19-2018, 07:13 PM
rvdave rvdave is offline
 
Join Date: Jun 2005
Posts: 315
Default

I will have to recheck that. The kit I bought the previous builder had already glassed in the antenna to the wingtips but vaguely recall it adjoining the line of screws for the wingtip. Have to wait for a no fly day to disassemble though.
__________________
Dave Ford
Cadillac, Mi
Reply With Quote
  #9  
Old 01-22-2018, 06:46 PM
Strasnuts Strasnuts is offline
 
Join Date: Jan 2009
Location: Salt Lake City, Utah
Posts: 535
Default I have both

I have both installed and have tried a few times to see the difference. The cat whiskers work twice the range of the bob archer. I'm not saying the bob archer doesn't work ok I'm saying my cat whiskers work double the range.
__________________
A&P RV-10 Flying 850 hours
SuperSTOL Flying 100 hours
Reply With Quote
  #10  
Old 01-22-2018, 08:22 PM
RV6_flyer's Avatar
RV6_flyer RV6_flyer is offline
 
Join Date: Jan 2005
Location: NC25
Posts: 2,944
Default

Quote:
Originally Posted by Strasnuts View Post
I have both installed and have tried a few times to see the difference. The cat whiskers work twice the range of the bob archer. I'm not saying the bob archer doesn't work ok I'm saying my cat whiskers work double the range.
The Archer Antenna is not installed correctly. When installed correctly, it will outperform the cat whisker.
__________________
Gary A. Sobek
NC25 RV-6
Flying
3,300+ hours
Where is N157GS
Building RV-8 S/N: 80012

To most people, the sky is the limit.
To those who love aviation, the sky is home.
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 02:11 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.