Results 1 to 8 of 8
  1. #1
    Forum Moderator
    Join Date
    Nov 2008
    Location
    Essex / EGMC
    Posts
    2,104
    Contribute If you enjoy reading the
    content here, click the below
    image to support MyCockpit site.
    Click Here To Contribute To Our Site

    Your Opinion Please?

    Hello,

    Look at this picture of this nav / com radio.



    There appears to be 4 rotary encoder style knobs.

    Are they 2 pairs of knobs (1 for KHz and 1 MHz) x2 ????

    Surely these are not dual encoder style, such as push and turn for 2nd selection?

    May seem like a dumb question, but I'm guessing, that the older style radio's didn't have this dual rotary mechanism....

    Cheers!

    Alex
    Building An Airbus In My Garage!

  2. #2
    Executive Assistant Geremy Britton's Avatar
    Join Date
    Jul 2007
    Location
    North,East England
    Posts
    1,597
    Contribute If you enjoy reading the
    content here, click the below
    image to support MyCockpit site.
    Click Here To Contribute To Our Site

    Re: Your Opinion Please?

    sounds about right Alex. 2 rotaries for each side of the radio. one for the full integers and the other for the decimals.
    Geremy Britton
    Executive Assistant, MyCockpit Inc
    Head of GLB Flight Products
    www.geremy.co.uk

  3. Thanks AlexJ thanked for this post
  4. #3
    Heli Builder fweinrebe's Avatar
    Join Date
    May 2008
    Location
    Namibia
    Posts
    325
    Contribute If you enjoy reading the
    content here, click the below
    image to support MyCockpit site.
    Click Here To Contribute To Our Site

    Re: Your Opinion Please?

    I had a similar broken radio and had a peek inside.

    Geremy is right the one side for the Mhz and the other for the decimal parts. Normally these knobs include a gear set to turn a drum on which the digits are attached to. I guess it also uses an optical Gray code encoder that translates their position to a digital signal. Or a rotary switch with many positions and a lot of wiring.

    Building that one yourself will be, mechanically, a difficult challenge. I would just use 4 rotary encoders and make the digits with 7 segment LEDs. Use a rotary encoder with large detents.

    These knob radios needed quite a lot of effort to turn. Not like the rotary encoders we use.
    Fritz -> Helicopter Cockpit Builder
    (FSX | TH2Go | Arduino | C# Avionics | CNC)

  5. Thanks AlexJ thanked for this post
  6. #4
    75+ Posting Member
    Join Date
    Jan 2009
    Location
    Derby, UK
    Posts
    128
    Contribute If you enjoy reading the
    content here, click the below
    image to support MyCockpit site.
    Click Here To Contribute To Our Site

    Re: Your Opinion Please?

    I think these are 50kHz channel spacing (360 Channels) only - Looks a bit out of place below the Garmin - But probably a lot easier to drive!

    18x1MHz and 20x50kHz.

    Might be easier to copy one of the Main/Standby window types.

    Cheers,

    Rob

  7. Thanks AlexJ thanked for this post
  8. #5
    300+ Forum Addict



    Join Date
    Feb 2007
    Location
    California, USA
    Posts
    406
    Contribute If you enjoy reading the
    content here, click the below
    image to support MyCockpit site.
    Click Here To Contribute To Our Site

    Re: Your Opinion Please?

    If that's the radio type that interests you, you might be able to buy a used one and use the switches and drum displays. It's possible that this model is getting old enough that people don't want them in their planes any more. I've picked up older radios at swap meets. You might get lucky too! Try Trade-A-Plane and Ebay.

  9. Thanks AlexJ thanked for this post
  10. #6
    Forum Moderator
    Join Date
    Nov 2008
    Location
    Essex / EGMC
    Posts
    2,104
    Contribute If you enjoy reading the
    content here, click the below
    image to support MyCockpit site.
    Click Here To Contribute To Our Site

    Re: Your Opinion Please?

    Hello,

    The reason I pointed this picture out, was because I thought all radio's had this dual encoder type mechanism, I can quite imagine how 'chunky' these older radio's are and the 'old' feel they have to them...

    But it got me thinking......

    As much as I am building a new style bendix radio, I thought that it might be nice to recreate and 'modernise' one of these older style radio's, but giving it a much more up to date look! I would only use this as my secondary radio, considering I wouldnt use it that much!

    You never know I could go for this 'retro radio stack look'.....

    I haven't seen many Cessna 152/72/82 home cockpits with retro radio stacks!

    Would be like restoring an old classic car!

    ****ALSO****

    I need to pick your brains guys....

    How do I implement 7 segment displays into the radios.....just the displays only!.....ol yeah...and cheaply......

    This is one for Mike I guess?
    Building An Airbus In My Garage!

  11. #7
    Executive Vice President, MyCockpit


    Matt Olieman's Avatar
    Join Date
    Oct 2005
    Location
    Ocala, FL USA
    Posts
    3,155
    Contribute If you enjoy reading the
    content here, click the below
    image to support MyCockpit site.
    Click Here To Contribute To Our Site

    Re: Your Opinion Please?

    Those are definitely old radios and as Geremy said, left knob full digital and right decimal digits.

    Surprised they're still being used. There should be plenty around in piles being given away

    Matt Olieman

  12. Thanks Geremy Britton thanked for this post
  13. #8
    Forum Moderator
    Join Date
    Nov 2008
    Location
    Essex / EGMC
    Posts
    2,104
    Contribute If you enjoy reading the
    content here, click the below
    image to support MyCockpit site.
    Click Here To Contribute To Our Site

    Re: Your Opinion Please?

    There should be plenty around in piles being given away
    Sadly not in the UK....

    Again...not too sure if I am going down the retro route yet, due to lack of functionality, as the newer Bendix King radio's do exactly what the modern pilot needs.....

    Like I said, I will make my Bendix King radio, and may remake an old classic, but it sure will be one eclectic radio stack, maybe a little to strange, as the mix of old and new looks quite odd at times.....(as pictured...a Garmin and a classic?)

    Weird!
    Building An Airbus In My Garage!

Similar Threads

  1. Opinion on computer for PM and others
    By Gabriel in forum Computer Hardware Setup
    Replies: 15
    Last Post: 03-04-2011, 03:39 AM
  2. Does anyone have an opinion? CH Yoke GP to USB
    By RobiD in forum General Builder Questions All Aircraft Types
    Replies: 8
    Last Post: 09-30-2010, 06:51 PM
  3. Opinion on TV interfacing
    By gokhotit in forum Pilots Lounge - Let your Hair down
    Replies: 3
    Last Post: 05-04-2010, 12:02 PM
  4. Opinion on monitor layout.
    By AlexJ in forum General Aviation (GA) Builder Disccusion
    Replies: 4
    Last Post: 08-18-2009, 04:49 PM
  5. Your Opinion Please?
    By AlexJ in forum General Builder Questions All Aircraft Types
    Replies: 7
    Last Post: 08-04-2009, 08:37 AM