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<[email protected]> |
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Hi Ubbe,
Thanks for the info!
I guess I should open the case and check for hardware mods. If so I will
report back what I find.
Initially I left the display on during reprogramming/checkout and as it
is in the garage and is on 24/7 and didn't want it to freeze. Now that
it is warmer I turned off the display and noticed the display was
turning on and off every time the squelch opened tone or not.
Another terrific Summer day in Nebraska!
Don
More Live Radio Fun and a Whole Lot More!
Don KPC6NDB
Gothenburg, NE
N40.9 W100.1 2600ft DN90ww
BC1206CM Bearcat DX1000 FRG-100B
FunCube Dongle Pro+ ICF2010 Perseusx3
WR-G303e WR-G31DDCx7 SDRplay RSP2pro
R70 R71A w/250Hz R75x2 w/250Hz R7000
PRN1000x2 SDR-IQ SPR-4 SSR-1 w/NDB mod
SR-AF & LPF DSP599zx MFJ-784B HD-1418 AF-1 MSB-1
PA0RDT-MWx4 1@18 1@18ft DXE-ARAV3-1Px4
RYOAA McKay Dymek DA-100 AAx3
Z1501F Russian MW
105 Vintage ADF/RDF
2384 Lifetime logs +65k logs submitted
On 28-Jun-19 11:38, [email protected] [UnidenBC780XLT] wrote:
>
> It's not a software modification so you can safely reprogram it.
>
> The hardware modification takes the squelch signal and probably drives
> a little transistor that grounds the base of Q42. If you then turn off
> the display backlight it will turn on with the squelch. You could
> improve the function by adding a diod and a capacitor that would keep
> the backlight on for a second or two after the squelch closes.
>
> The steering signal can be taken from IC11 pin 7 or 8 depending of
> which one will have the correct polarity and doesn't turn on the light
> when the squelch closes. The transistor needs to be of a type that can
> ground a signal lower than 0,6 volt.
>
> /Ubbe
>
>
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<p>
Hi Ubbe,<br>
<br>
Thanks for the info!<br>
<br>
I guess I should open the case and check for hardware mods. If so I
will report back what I find.<br>
<br>
Initially I left the display on during reprogramming/checkout and as
it is in the garage and is on 24/7 and didn't want it to freeze. Now
that it is warmer I turned off the display and noticed the display
was turning on and off every time the squelch opened tone or not.<br>
<pre class="moz-signature" cols="72">
Another terrific Summer day in Nebraska!
Don
More Live Radio Fun and a Whole Lot More!
Don KPC6NDB
Gothenburg, NE
N40.9 W100.1 2600ft DN90ww
BC1206CM Bearcat DX1000 FRG-100B
FunCube Dongle Pro+ ICF2010 Perseusx3
WR-G303e WR-G31DDCx7 SDRplay RSP2pro
R70 R71A w/250Hz R75x2 w/250Hz R7000
PRN1000x2 SDR-IQ SPR-4 SSR-1 w/NDB mod
SR-AF & LPF DSP599zx MFJ-784B HD-1418 AF-1 MSB-1
PA0RDT-MWx4 1@18 1@18ft DXE-ARAV3-1Px4
RYOAA McKay Dymek DA-100 AAx3
Z1501F Russian MW
105 Vintage ADF/RDF
2384 Lifetime logs +65k logs submitted
</pre>
<div class="moz-cite-prefix">On 28-Jun-19 11:38, <a class="moz-txt-link-abbreviated" href="mailto:[email protected]">[email protected]</a>
[UnidenBC780XLT] wrote:<br>
</div>
<blockquote cite="mid:[email protected]" type="cite"> <span>??</span>
<div id="ygrp-text">
<p>It's not a software modification so you can safely
reprogram it.<br>
<br>
The hardware modification takes the squelch signal and
probably drives a little transistor that grounds the base
of Q42. If you then turn off the display backlight it will
turn on with the squelch. You could improve the function
by adding a diod and a capacitor that would keep the
backlight on for a second or two after the squelch closes.<br>
<br>
The steering signal can be taken from IC11 pin 7 or 8
depending of which one will have the correct polarity and
doesn't turn on the light when the squelch closes. The
transistor needs to be of a type that can ground a signal
lower than 0,6 volt.<br>
<br>
/Ubbe</p>
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