Looking for a Small Sonic Beacon

Discussion in 'Recovery' started by PhysicsGuy, Oct 8, 2018.

  1. Oct 8, 2018 #1

    PhysicsGuy

    PhysicsGuy

    PhysicsGuy

    Member

    Joined:
    Aug 24, 2014
    Messages:
    19
    Likes Received:
    3
    Gender:
    Male
    Location:
    Melbourne, FL
    I'm looking for a small sonic beacon to use at our launch site where the grass and brush is starting to get pretty tall. On larger rockets, we've been using those personal alarms, but I'm looking for something for LPR that is very light and will go in a BT50 (about 0.9 inches max diameter). Some time ago, I saw one online that was "thumb sized" but can't seem to find it anymore. I'm even open to building one. Suggestions appreciated.

    --MARK
    NAR 65148, L1
     
  2. Oct 8, 2018 #2

    samb

    samb

    samb

    Lifetime Member

    Joined:
    Jan 22, 2009
    Messages:
    3,403
    Likes Received:
    16
    Location:
    Plano, TX
    Woody's Workshop likes this.
  3. Oct 8, 2018 #3

    Zeus-cat

    Zeus-cat

    Zeus-cat

    Well-Known Member

    Joined:
    Mar 14, 2009
    Messages:
    3,581
    Likes Received:
    48
    Very loud, if you remember to run some tape around the battery holder to make sure the battery doesn't pop out at ejection. Not the least bit loud if the battery pops out.
     
  4. Oct 8, 2018 #4

    Charles_McG

    Charles_McG

    Charles_McG

    Ciderwright

    Joined:
    Sep 12, 2013
    Messages:
    1,505
    Likes Received:
    79
    Location:
    SE Wisconsin
    I've used the microbeacon, too. Sometimes it's louder than others, for reasons I haven't figured out. ++1 on taping the battery in. I also picked up a toy directional microphone (cheap amazon parabolic mic and earphones) to go with it, but moved to eggfinders before putting it to the Bong High Weed Test.
     
  5. Oct 8, 2018 #5

    afadeev

    afadeev

    afadeev

    Forum Supporter TRF Supporter

    Joined:
    Sep 21, 2017
    Messages:
    453
    Likes Received:
    14
    I've had good luck with the following:
    http://www.adeptrocketry.com/beepers.htm

    The smallest one (SB1) should have no problem fitting into BT50.
    Beware of the added weight, as they may effect the stability of the smaller low-power rockets.

    a
     
  6. Oct 8, 2018 #6

    shreadvector

    shreadvector

    shreadvector

    Well-Known Member

    Joined:
    Jan 19, 2009
    Messages:
    8,565
    Likes Received:
    11
  7. Oct 9, 2018 #7

    PhysicsGuy

    PhysicsGuy

    PhysicsGuy

    Member

    Joined:
    Aug 24, 2014
    Messages:
    19
    Likes Received:
    3
    Gender:
    Male
    Location:
    Melbourne, FL
    I knew you guys would have an answer.

    I've looked over the web pages for both of those and it appears the Adept SB1 and the Pratt Microbeacon will work just fine. Thank you. And they will even fit in a BT-20 sized tube!

    One of the things I like about the Adept is that it has a pull cord to activate the beep.... much like some of the personal alarms we use in bigger rockets. Do any of you know if the Pratt unit has the same capability? Couldn't tell from the description on his web site.

    I may try one of each. Thanks for your help.
     
  8. Oct 9, 2018 #8

    Charles_McG

    Charles_McG

    Charles_McG

    Ciderwright

    Joined:
    Sep 12, 2013
    Messages:
    1,505
    Likes Received:
    79
    Location:
    SE Wisconsin
    The Microbeacon is on once the battery is in.
     
  9. Oct 9, 2018 #9

    Zeus-cat

    Zeus-cat

    Zeus-cat

    Well-Known Member

    Joined:
    Mar 14, 2009
    Messages:
    3,581
    Likes Received:
    48
    Earplugs are recommended for setup and recovery. That sucker is loud.
     
  10. Oct 11, 2018 #10

    PhysicsGuy

    PhysicsGuy

    PhysicsGuy

    Member

    Joined:
    Aug 24, 2014
    Messages:
    19
    Likes Received:
    3
    Gender:
    Male
    Location:
    Melbourne, FL
    Thanks for all the info. I ordered one of the MicroBeacon's this morning. Next week, when I have a little more free time, I think I'll also order one of Adept's smallest beacons.

    --MARK
     

Share This Page