VansAirForceForums  
Home > VansAirForceForums

-POSTING RULES
-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.


Go Back   VAF Forums > Avionics / Interiors / Fiberglass > COMM
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #11  
Old 07-09-2020, 08:46 AM
g3xpert's Avatar
g3xpert g3xpert is offline
 
Join Date: Sep 2010
Location: Olathe, KS
Posts: 3,050
Default HF Radio

Quote:
Originally Posted by Steve Ashby View Post
I am planning on installing a HF transceiver in my 8A. Most installations I have seen are pretty cobbled together with a hand held mic.
The Garmin GMA 340 has provisions for 3 coms. Does anyone know if I can channel the HF radio through the 340?
Thanks!
Steve Ashby
Good Morning Steve,

This should be something you can work out with a range of HF radios. Do you have one in mind that you are interested in using? It is not likely that received audio will be much of a problem, but the mic signal voltage levels can be tricky. Send us over which HF radio you are thinking about using and we would be happy to work to make a determination of compatibility for you.

Thanks,

Justin
__________________
Garmin G3X Support
g3xpert@garmin.com
1-866-854-8433 - 7 to 7 Central Time M to F
Please email us for support instead of using Private Messaging due to the limitations of the latter.
Reply With Quote
  #12  
Old 07-10-2020, 04:28 PM
Steve Ashby's Avatar
Steve Ashby Steve Ashby is offline
 
Join Date: Jul 2006
Location: Stone Mountain, Georgia
Posts: 488
Default Thank you all for your incredible help!

I am blown away by the generous input of you brother RVers. This is all valuable information.

I am buying a GMA 340 and I will be on the hunt for an adaptable and affordable HF transceiver for planned transoceanic flights. I am grossly ignorant of avionics installations, but, with the right help, I know I can make it all work.

Thanks again,

Steve
__________________
Steve Ashby
Stone Mountain, GA
N184RW (reserved)
RV-8A
YIO-360 180 hp Lycoming
Hartzell Blended Airfoil Prop
Engine Hung
Reply With Quote
  #13  
Old 07-10-2020, 05:43 PM
GalinHdz's Avatar
GalinHdz GalinHdz is offline
 
Join Date: Mar 2010
Location: KSGJ / TJBQ
Posts: 2,213
Default

Quote:
Originally Posted by Steve Ashby View Post
I am blown away by the generous input of you brother RVers. This is all valuable information.

I am buying a GMA 340 and I will be on the hunt for an adaptable and affordable HF transceiver for planned transoceanic flights. I am grossly ignorant of avionics installations, but, with the right help, I know I can make it all work.

Thanks again,

Steve
Once you decide which actual transceiver you want to use, then you can work on the rest of the design. It isn't superbly hard to do, just takes a little experimental aviation ingenuity.

__________________
Galin
CP-ASEL-AMEL-IR
FCC Radiotelephone (PG) with Radar Endorsement
2021 Donation made
www.PuertoRicoFlyer.com
Reply With Quote
  #14  
Old 05-16-2021, 09:28 PM
STINSONIOUS STINSONIOUS is offline
 
Join Date: May 2021
Location: W Wa
Posts: 1
Default

Quote:
Originally Posted by jnmeade View Post
I am most of the way there. I use the PSEngineering PMA8000C and the 12100 TAC radio adaptor. One has to match microphone impedances as the aviation and ham are not the same.
The radio is a Yaesu FT857D.
Howdy all,

first post here after watching for a great many years!

I know this thread has been resting a little in the last year or so.

There is another choice for an adapter if you don't want to use the "Tactical Radio Interface" by PS Engineering. (about $700 from Aircraft Spruce and other places)

The Northern Airborne Technology AA34-100/200/300 Universal Radio Interface is a great alternative and seems to be very popular with float plane operators that want to interface their marine VHF FM equipment into their audio switching panels.

Here's a link to manualslib where you can read the install manual and specs etc:

https://www.manualslib.com/manual/13...oduct-AA34-300

A local avionics shop owner told me that he has installed a great many of these things in float planes in the Pacific NW over the years.

I decided to use it in my 108-2 Stinson to install a dual band VHF/UHF amateur transceiver. It can be used with virtually any non-aircraft radio and allows a seamless interface complete with sidetone etc.

I recently found one online new (old stock) for about $300 and a whole bunch of "as removed" ones for less.

I've been operating amateur radio equipment in small airplanes since the 70's and (already installed) HF SSB equipment in USAF and civilian aircraft since the early 80's until I retired in 2018.

The only main problem with HF equipment in small airplanes is the short antenna. If you can cobble together a trailing wire using an end fed coupler (like the SGC-230, ICOM AH-4, and a host of others) It can work pretty well.

If you're stuck with a very short antenna like a repurposed ADF sense antenna, and running 100-150W, it's not going to work all that well on the lower medium and high frequencies. (below around 8MHz)

Even the Airline and military radios didn't work all that well on the lower frequencies with the crummy vertical stab embedded antennas but they made up for it with high transmit power (400W) And for the record, high altitude doesn't help all that much at all with HF skywave propagation.

Quote:
Steve Ashby
Thank you all for your incredible help!
I am blown away by the generous input of you brother RVers. This is all valuable information.

I am buying a GMA 340 and I will be on the hunt for an adaptable and affordable HF transceiver for planned transoceanic flights. I am grossly ignorant of avionics installations, but, with the right help, I know I can make it all work.

Thanks again,

Steve
Steve,

there's several radios out there for ham radio that will "work" . I am not sure how the FCC would see it but most of the current stuff is certainly stable enough.

Other choices can be the Motorola MICOM-3T, Vertex Standard VX-1400/1700 and the ICOM IC-M802 and 803

The with the exceptions of the ICOM radios mentioned above, the others are discontinued but are available for reasonable prices (I have a VX-1700, IC-M802 and a Micom-3T and they're outstanding HF radios)

My choice would be the ICOM IC-M803 which is currently in production or even the MICOM-3T because they're commercial quality equipment. (and they have remote mounted control heads)

Anyway, there you go!

Please post back here with what you finally do! I would love to hear what worked for you!

73 All!

Rick
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 10:32 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.