Xprotolab Specs

[Brian Hawes]

Hi,

Been having fun with my Xprotolab. Amazing little board.
It looks as though it may have been hand-assembled and it  started seizing up and refusing to start. I had to lift 
off the 'Menu' switch and re-solder the contact pins which are underneath. 
All O.K. now but less than full marks.

I remember saying I would retire when I could no longer see the things I was expected to work with. 
It goes on!

Brian

_______________________________________
From: tacos-bounces+hawes=herald.ox.ac.uk at rf.org [tacos-bounces+hawes=herald.ox.ac.uk at rf.org] On Behalf Of Richard O'Neill [richardoneill at earthlink.net]
Sent: 24 January 2011 00:18
To: Tacos AMRAD
Subject: Re: Xprotolab Specs

  Just wait until all those crystal set loonies out there get wind of
these cute little visual aids. I'll hold off posting about them until I
see how one performs in my DX set. I get about 10 millivolts input on my
O-scope from a barely readable signal.

Richard


On 1/23/2011 4:04 PM, Brian Hawes wrote:
> I noticed that in the space of two days, their stock went down from 16 to 5. They are now out of stock
> until the end of the Month.
> Is that all down to AMRAD?
> I think I am going to need more of these!
>
> Brian Hawes
> _______________________________________
> From: tacos-bounces+hawes=herald.ox.ac.uk at rf.org [tacos-bounces+hawes=herald.ox.ac.uk at rf.org] On Behalf Of Richard O'Neill [richardoneill at earthlink.net]
> Sent: 23 January 2011 17:01
> To: Tacos AMRAD
> Subject: Xprotolab Specs
>
>    I asked the company about input levels and received this info.
>
>    I'm thinking of adding one to my DX crystal set, a narrow band
> Panadapter - of sorts.
> It might be useful for detecting low level audio signals.
>
> --------------------------------------------------------------------------------------------
>
> The input has 7 gain settings, the screen has 4 divisions:
>
> 78.125 mV/div   ==>   312.5 mV   max signal
> 0.15625 V/div   ==>   625 mV     max signal
> 0.3125 V/div    ==>   1.25 V     max signal
> 0.625 V/div     ==>   2.5 V      max signal
> 1.25 V/div      ==>   5 V                max signal
> 2.5 V/div       ==>   10 V       max signal
> 5 V/div         ==>   20 V       max signal
>
> The offset position can be adjusted up and down, for example, if you have a
> signal that swings from 0 to 2.5V, you would set the position at the bottom
> of the screen and set the 0.625V/div gain setting. If the signal swings from
> -1.25V to +1.25V, you would set the position at the center of the screen.
>
> The input impedance is 1M ohm.
>
> Regards,
> Gabriel
>
>
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>

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