|
-
POSTING RULES

-
Donate yearly (please).
-
Advertise in here!
-
Today's Posts
|
Insert Pics
|

12-17-2012, 04:50 AM
|
 |
|
|
Join Date: Dec 2004
Location: Gold Hill, NC25
Posts: 2,400
|
|
Wanted: Electrical work done on an Apollo SL15/PMA7000B
I have an Apollo SL15/ PMA 7000B that works perfectly fine. One problem, it sits low in the panel and I can not see what COM is selected when Im busy entertaining folks.
In the middle of a show Im swapping back and forth (com swap on stick) to deal with the team and air boss. I have screwed up more than once transmitting on the wrong com due to sunlight on the audio panel that washes out the lights.
What I need is for someone to wire up a jumper to a spare edge card finger so I can pull off of it and wire up a remote light up on my glare shield to show com 2 transmit is active.
PS Engineering will not help me even though its their unit.
Please PM me if your interested in this work.

__________________
Kahuna
6A, S8 ,
Gold Hill, NC25
|

12-17-2012, 05:54 AM
|
|
|
|
Join Date: Jun 2005
Posts: 375
|
|
Have you considered re-purposing the remote com swap button? Why not connect it as a dedicated ptt? I have two ptt buttons on the stick, one for com1 and one for com2.
Paige
|

12-17-2012, 05:58 AM
|
 |
|
|
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 5,686
|
|
Another option would be to tap off the PTT lines and drive an led that shows which comm is active. Granted you would not know until you keyed the mic which comm you were on, but it may be better than a major mod to the IC (that may void ANY factory support from PSE in the future).
__________________
Walt Aronow, DFW, TX (52F)
EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
|

12-17-2012, 06:15 AM
|
 |
|
|
Join Date: Dec 2004
Location: Gold Hill, NC25
Posts: 2,400
|
|
Quote:
Originally Posted by PaigeHoffart
Have you considered re-purposing the remote com swap button? Why not connect it as a dedicated ptt? I have two ptt buttons on the stick, one for com1 and one for com2.
Paige
|
Hmmm. This is an interesting thought. I assumed that the key was not only putting the com in transmit, but also the audio panel routing voice to the proper com. 2 com switches would require direct key to ground for each radio but how would the radio get the voice from the proper mic? This seems to be defeating the audio panel functionality. Im sure there are other unintended consequences of this as welll.
Quote:
Originally Posted by Walt
Another option would be to tap off the PTT lines and drive an led that shows which comm is active. Granted you would not know until you keyed the mic which comm you were on, but it may be better than a major mod to the IC (that may void ANY factory support from PSE in the future).
|
Yes this basically requires me to key first then hope its right. Would also put unnecessary clicks on the com to others if I relied on it.
I dont care about warranty or factory support.
__________________
Kahuna
6A, S8 ,
Gold Hill, NC25
|

12-17-2012, 06:28 AM
|
 |
|
|
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 5,686
|
|
Do you have a schematic/service manual available? Would be helpful to review that to see whats inside.
__________________
Walt Aronow, DFW, TX (52F)
EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
|

12-17-2012, 06:43 AM
|
 |
|
|
Join Date: Dec 2004
Location: Gold Hill, NC25
Posts: 2,400
|
|
No Im afraid I only have the Installation manual. Ive had it apart and there are several unused fingers available, no tracks to them and exposed.
__________________
Kahuna
6A, S8 ,
Gold Hill, NC25
|

12-17-2012, 06:54 AM
|
 |
|
|
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 5,686
|
|
Without a schematic for finding how/where to pick off the signals it would be very risky or even impossible. I personally would not be comfortable attempting something like this on a "customers" unit without one. If I smoked it for you, I doubt you would be real happy with me 
__________________
Walt Aronow, DFW, TX (52F)
EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
|

12-17-2012, 07:24 AM
|
|
|
|
Join Date: Jan 2005
Location: Georgetown, TX
Posts: 396
|
|
Mike, I sent an email describing another approach...
__________________
Deene Ogden.
N399AD RV-12...flying
N299AD RV8 QB, IO-390X, BA prop...SOLD
N199AD One Design...SOLD
N99AD BD4, flew for 22 years...SOLD
EAA Tech Counselor/Flight Advisor
CFII, MEI, CFIG
|

12-17-2012, 07:42 AM
|
 |
|
|
Join Date: Oct 2005
Posts: 182
|
|
Remote Com indication
Dear Mike:
I would like to explain why our original answer to you was "no" and then tell you why we were potentially wrong by saying no.
First one (and probably does not apply to you) is that it is TSO'd, so we can't return to service a modified unit without the necessary FAA paper work.
Second, the amount of engineering time to design a circuit that we believe would be robust enough to be installed in an aircraft is not inexpensive. So "Would we make this modification for you if you do not need a certified part?" Maybe.
At minimum, it would be at least one man day to design and prototype the change. Then at least another day integrating it back into our production line as a "modified" unit for a complete retest of the system.
So, we probably should not have told you no, but should had given you a rough estimate to how much it would cost to make the change.
We should have put you in the position so you could have made that decision, and I'm sorry we didn't.
On the other hand, if we told you how much it would cost, you "might" have taken the position that PS Engineering is asking a rediculous amount of money to make such a simple change. We might have been profiled as price gougers.
The cost we would charge would reflect the amount of time it would take to make a design change, prototype the change, test the change, and then return the unit to service. Finally, the cost of pulling an engineer off a project is significant as well. The consequence of interrupting an engineer is "priceless"
If the unit is in a certified aircraft, the answer would still be no. The added cost to make a change to our TSO would be prohibitive.
I have a question, I am assuming you have just two radios, in order to elminate the swap function from cycling through all three radios, if you configure Com 3 for Telephone mode, you then will only cycle through Com 1 and Com 2. Has the PMA7000B been configured for Tel mode?
Hope this helps.
Mark Scheuer
PS Engineering, Inc.
Quote:
Originally Posted by Kahuna
I have an Apollo SL15/ PMA 7000B that works perfectly fine. One problem, it sits low in the panel and I can not see what COM is selected when Im busy entertaining folks.
In the middle of a show Im swapping back and forth (com swap on stick) to deal with the team and air boss. I have screwed up more than once transmitting on the wrong com due to sunlight on the audio panel that washes out the lights.
What I need is for someone to wire up a jumper to a spare edge card finger so I can pull off of it and wire up a remote light up on my glare shield to show com 2 transmit is active.
PS Engineering will not help me even though its their unit.
Please PM me if your interested in this work.

|
|

12-17-2012, 07:55 AM
|
 |
|
|
Join Date: Dec 2004
Location: Gold Hill, NC25
Posts: 2,400
|
|
Mark, thanks for the response.
Yes it has been configured for tel mode and only swaps between com 1 & 2.
Im sure my requirements are unique. Yes its on an experimental.
If I could get some voltage on a finger on the edge card, I could wire that externally to a relay if is a low voltage light in the button on that circuit.
An external micro relay could do the work.
I want one small light on my glare shield indicating that one of the coms is on transmit, just like the button has. I need it for only one.
I have a similar light for smoke on. I need indication in my field of view for the environment I fly in. I just dont have the cycles to be looking down on the panel for these 2 items that I flop on and off a dozen times in a 15 min routine. I need to free up my 'bucket'/workload.
__________________
Kahuna
6A, S8 ,
Gold Hill, NC25
|
| Thread Tools |
Search this Thread |
|
|
|
| Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -6. The time now is 03:36 AM.
|