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#215619 - 01/24/11 07:08 PM Re: Question about emergency beacons [Re: comms]
hikermor Offline
Geezer in Chief
Geezer

Registered: 08/26/06
Posts: 7344
Loc: southern Cal
Originally Posted By: comms

Before going with SPOT I was heavily swayed by ACR. In fact I still carry a very old, but reliable rubber button ACR Firefly strobe that ran on those lipstick style mercury or lithium cells before I converted it to CR123.

Comms, how would one go about making that conversion? I have some of the same units - still functional with the original fifteen year old batteries, but I would like to keep them working...
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#215621 - 01/24/11 08:08 PM Re: Question about emergency beacons [Re: hikermor]
paramedicpete Offline
Pooh-Bah

Registered: 04/09/02
Posts: 1920
Loc: Frederick, Maryland
Here is an Ebay source for both the strobe and conversion cap, you could contact the seller to see if they will sell just the cap:

NEW SDU-5/E Distress Strobe w/conversion cap for cr123

Pete

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#215630 - 01/24/11 09:57 PM Re: Question about emergency beacons [Re: paramedicpete]
hikermor Offline
Geezer in Chief
Geezer

Registered: 08/26/06
Posts: 7344
Loc: southern Cal
Thank you very much!
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#215955 - 01/30/11 07:42 AM CR123 Conversion Cap for SDU-5/E [Re: paramedicpete]
rafowell Offline
Enthusiast

Registered: 11/29/09
Posts: 230
Loc: Southern California
A conversion cap for using a pair of CR123 batteries
to power a SDU-5/E Distress Marker Strobe light can be found here

http://www.prc68.com/P/Prod.html#B

I have no experience with these - just Googled for it because the
question came up above.
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A signal mirror should backup a radio distress signal, like a 406 MHz PLB (ACR PLB) (Ocean Signal PLB)

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#215962 - 01/30/11 12:21 PM Re: CR123 Conversion Cap for SDU-5/E [Re: rafowell]
Doug_Ritter Offline

Pooh-Bah

Registered: 01/28/01
Posts: 2057
Originally Posted By: rafowell
A conversion cap for using a pair of CR123 batteries
to power a SDU-5/E Distress Marker Strobe light can be found here

http://www.prc68.com/P/Prod.html#B

I have no experience with these - just Googled for it because the
question came up above.


They work great.
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#215969 - 01/30/11 02:28 PM Re: CR123 Conversion Cap for PRC-90 [Re: Doug_Ritter]
Russ Offline
Geezer

Registered: 06/02/06
Posts: 5338
Loc: SOCAL
Any comments on how the PRC-90 Battery Adapter works?


Edited by Russ (01/30/11 04:18 PM)
Edit Reason: chabged title to read PRC-90

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#215976 - 01/30/11 03:32 PM Re: CR123 Conversion Cap for SDU-5/E [Re: Russ]
Doug_Ritter Offline

Pooh-Bah

Registered: 01/28/01
Posts: 2057
Originally Posted By: Russ
Any comments on how the PRC-90 Battery Adapter works?
No, but in my experience they have a good reputation, so I don't see why it wouldn't work. Military uses a lot of their stuff adapters for training and such, since they can use cheaper batteries for training.
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#215979 - 01/30/11 04:17 PM Re: CR123 Conversion for PRC-90 [Re: Doug_Ritter]
Russ Offline
Geezer

Registered: 06/02/06
Posts: 5338
Loc: SOCAL
Thanks Doug. I ordered the 90BAv3. I have an old PRC-90 and while it came with a functional battery on receive, I have no way of knowing how long it would last if I needed to transmit.

PRC90 is a pretty good basic emergency radio.

It transmits both voice and morse on 243.0 MHz (Int'l air distress & guard on every military UHF radio I've used) and also voice on 282.8 MHz (Joint/combined on-the-scene voice) aka SAR common. That combined with a PLB should provide pretty good comms; bring the outside world into range and then talk to it.

Just another hope-I-never-need-to-use-this piece of gear.
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#216031 - 01/31/11 08:01 AM Re: CR123 Conversion for PRC-90 [Re: bacpacjac]
comms Offline
Veteran

Registered: 07/23/08
Posts: 1502
Loc: Mesa, AZ
quite some time ago I purchased a brass cap fitting to convert my ACR Firefly (SDU5/e) from a mercury battery to CR123 this site. Works great.
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#216042 - 01/31/11 11:38 AM Re: Question about emergency beacons [Re: comms]
bacpacjac Offline
Carpal Tunnel

Registered: 05/05/07
Posts: 3601
Loc: Ontario, Canada
Thanks for the info comms!! Very helpful to know. There's lots to consider but I agree, I don't want to use it in a way it's not intended for because it leaves more margin for error. I'm still on the fence about 1-way vs 2-way communication. Seems a combo of PLB and cell phone might be the best way to go.
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