[OZAPRS] "Programmable crystal" kit

Malcolm Larkin malcolm.larkin at icloud.com
Wed Apr 27 14:05:14 AEST 2016

You just want to get us hooked on Chrystal Math.

Sent from my iPhone

> On 26 Apr 2016, at 16:43, Hans Summers <hans.summers at gmail.com> wrote:
> Hi all
> As I mentioned on this forum a few weeks back - QRP Labs now has a new kit out, price $18, this is a minimalist controller for the Si5351A Synth chip. See http://qrp-labs.com/progrock . 
> This kit can be used as a crystal replacement in many cases where you do not have that awkward crystal frequency and don't want to spend a lot of money and time to get one custom made. Additionally you can connect 1pps from a GPS and have GPS discipline (better than 0.1ppm). There are THREE outputs so it can replace multiple crystals - and covers a wide frequency range 3.5kHz to 300MHz (approx). 
> Summary of features:
> Includes Si5351A Synth kit AND "ProgRock" PCB kit
> Easy construction, no surface-mount components to solder (Si5351A already pre-soldered)
> 3 independent 3.3V p-p squarewave outputs (2 if you use GPS discipline)
> You can feed the outputs through LPF kits to get sinewave outputs
> 8 selectable “banks” of frequencies, chosen by 3 input control signals
> Frequency range 3.5kHz to 200MHz
> Extended frequency range up to approx. 300MHz if you don’t mind violating the Si5351A datasheet specifications
> GPS frequency discipline using 1pps from a GPS receiver
> Unique power supply noise filter circuit designed by Alan Gray G8LCO
> Power supply voltage 5V, or using LM317LZ regulator (supplied), range is 5-12V DC
> Minimalist configuration user interface using 4-way DIP switch, push button, and LED
> Frequencies and configuration stored in non-volatilte memory (EEPROM) for next power-up
> 73 Hans G0UPL
> http://qrp-labs.com
> _______________________________________________
> OZAPRS mailing list
> OZAPRS at aprs.net.au
> http://lists.aprs.net.au/mailman/listinfo/ozaprs
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.aprs.net.au/pipermail/ozaprs/attachments/20160427/2af4b631/attachment.html>

More information about the OZAPRS mailing list