[hpsdr] external 10MHz reference input

[George Byrkit]

John,
Thanks for the corrections!  It would seem that the link on the TAPR site to the TADD-2 in
at least some places is wrong: it goes to the TADD-3.

73,
George

-----Original Message-----
From: John Ackermann N8UR [mailto:jra at febo.com] 
Sent: Wednesday, May 22, 2013 5:45 PM
To: George Byrkit
Cc: hpsdr at lists.openhpsdr.org
Subject: Re: [hpsdr] external 10MHz reference input

Actually, TADD-2 and TADD-3 serve different purposes -- TADD-2 (and the 
single-channel TADD-2 Mini) will divide a 1/5/10 MHz source down to one 
pulse per second while the TADD-3 is a pulse distribution device -- six 
PPS outputs for one or two PPS inputs, with no divider capability.

TADD-1 is a 6-channel RF distribution amplifier.  At the moment only the 
PCB is available because the original amplifier chip (MAX477) has become 
unobtanium.  We are told that there are other op-amps that can be 
dropped in as replacements, but haven't done testing ourselves.

73,
John

On 5/22/2013 4:55 PM, George Byrkit wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Checking the TAPR website (that might seem obvious?), you can see that the TADD-1
circuit
> board is available, and that the TADD-3 seems to have replaced the TADD-2, and is
> available as a full kit.
>
> Of course since you are likely in the UK, a kit from the UK might be better suited, as
the
> previous poster has pointed out.
>
> 73,
> George K9TRV
> TAPR board member
>
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