[aprssig] E Coast 9600 baud backbone 15W radios.

Stephen H. Smith wa8lmf2 at aol.com
Fri May 27 15:19:26 CDT 2016


On 5/27/2016 2:01 PM, Bill Vodall via aprssig wrote:
>> [There are now 10W and 25W Chinese dual-band VHF/UHF FM transceivers
>> ready-to-go available on eBay and elsewhere for $60-$90 NEW!]
>
> Are there any with the standard 6-pin din (or other) data connection
> for flat audio.   Will there work even if there a connection?
>


I'm wondering the same thing.  The rear views on Amazon and in the manual show 
only an SO-239 and a red/black zipcord 12 VDC power cable.    The mic jack 
appears to have one unused pin that could bring DISCR audio out, if one can 
find a normal discriminator to tap.

[A lot of these radios use DSP direct conversion based on cell phone chips, 
rather than traditional IF strips with discriminators....]

For my application using classic 1200 baud APRS, the lack of a dedicated 
mini-DIN "data port" with direct access to discriminator and DC-coupled TX 
isn't an issue -- mic and speaker will do fine.   BUT it WILL be an issue for 
9600 baud.

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Stephen H. Smith    wa8lmf (at) aol.com
Skype:        WA8LMF
EchoLink:  Node #  14400  [Think bottom of the 2-meter band]
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