[DSP-10] DSP-10 Construction and Shielding questions

[Perry Ogletree]

Do you have the KDSP10 (http://www.kk7p.com/kdsp10.html) interface board for 
the DSPx?  You will need that for the level shifting between the 3-volt DSPx 
and the 5-volt DSP10.  It has the DSPx regulator on it.

73 de Perry - K4PWO

----- Original Message ----- 
From: "William" <whstark at earthlink.net>
To: <dsp-10 at mailman.qth.net>
Sent: Thursday, August 03, 2006 11:35 AM
Subject: [DSP-10] DSP-10 Construction and Shielding questions


> Hello,
>
>            I got one of the last kits from TAPR last week - Tuesday in
> mail, I got to the point Friday that I was missing regulators JFETS, FETS
> and a Toroid.
>
> I sent a note to TAPR and received the parts this Thursday and put in FETS
> etc. found mixer shielding mod with solderwik and did that on U15,
>
> Thought it wouldn't be bad for U3 to.
>
> One site I found put PCB strips between sections where grounds are does
> anyone know if this is a help to for performance? I could put it in now.
>
>
>
> Also noticed the hardware is set up for the EZKIT and I got the DSPx,
> smaller board, so I have to get some mounting hardware.
>
> I put the other parts on board audio, dc connector, switch, regulator, 
> DB9.
> I can see this still fits in box and they did supply a male db9 I guess 
> for
> that reason.
>
> One thought was mini-phone connectors on case to access DSP for other
> experiments in audio and radio.
>
>
>
> Second Question here is the regulator needed on DSP since it draws less
> current and can I just get it from RF board supply anyone know, I did see
> this done on one website.
>
>
>
> Now the RF amp, I got one and no board available. I could hand etch one, 
> and
> then get a box etc.
>
> What is anyone's thoughts on just putting it in the main box heat sinked 
> to
> the box and built in a PCB box and changing the main fuse to 2 amps, and
> using regular non SMT parts for chokes etc. I can gut inductors from old 
> TV
> boards. This would move the RF out jack to the other side on box and RF 
> amp
> could be bolted under it.  Or add an external heat sink on back; maybe 
> just
> bolt one on outside. I just don't want to turn the box into oven. Wonder 
> how
> much heat it puts out.
>
> Other Idea is to just but Amp in box with a Battery to run it and the
> receiver.
>
>
>
> Had a few more mod's in mind  crystal oven, GPS lock, internal SWR tied to
> DSP I/O and internal temperature sensors and a small DC/DC switch mode
> supply with pic micro so I can run receiver and up the voltage on RF amp 
> to
> 15 or so volts if I want to. Got a Pickit2 from microchip and can put it 
> to
> use. But all this can come later. Need to Drill box now. Well of to VA
> Baypines for my treadmill test. Wish me luck.
>
>
>
> Bill KI4MYJ
>
> Clearwater
>
>
>
>
>
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