https://www.marcelpost.com/wiki/index.php?action=history&feed=atom&title=Pixie2Pixie2 - Revision history2026-05-17T04:58:38ZRevision history for this page on the wikiMediaWiki 1.39.17https://www.marcelpost.com/wiki/index.php?title=Pixie2&diff=2416&oldid=prevAdmin at 02:27, 11 October 20162016-10-11T02:27:27Z<p></p>
<p><b>New page</b></p><div>I bought this radio off eBay in 2015 and it's very low power and has some pros and cons:<br />
<br />
<br />
[[File:Pixie-qrp-cw-trx 01.jpg]]<br />
<br />
Pros:<br />
<br />
* Crystal controlled<br />
* Cheap, easy to build<br />
* low power usage (standby current about 20mA @ 12V, 100mA on transmit)<br />
* On-board LM386 audio amplifier (drives low impedance speaker or headphones)<br />
<br />
<br />
Cons:<br />
<br />
* Only capable of listening/transmitting on ONE frequency <br />
* No sidetone when keying<br />
* Loud DC-bumps (popping/clicking sound) when keying<br />
* only CW, no AM or SSB<br />
<br />
<br />
Some details:<br />
<br />
The Pixie 2 is a tiny rig, with a standard two-transmittor transmitter. It's a Colpitts oscillator, left running and a keyed Power Amplifier.<br />
There is no external mixer used to feed the audio amplifier. Instead, the mixing is done at the final amplifier itself with the resulting audio<br />
taken off the emitter.<br />
<br />
There is no Receiver Incremental Tuning (RIT).<br />
<br />
<br />
<br />
<br />
* Power input: 9V - 12V (Q2, the S8050 gets hot with too much input voltage!)<br />
* Power consumption: 10mA RX, 100mA TX (@ 9V)<br />
* TX Power: 1.2W @ 12V, 0.8W @ 9V<br />
* QSK (Full break-in) CW <br />
<br />
<br />
<br />
Schematic:<br />
<br />
[[File:Pixie-qrp-cw-trx 02.jpg]]<br />
<br />
<br />
<br />
Unpopulated PCB:<br />
<br />
[[File:PIXIE(120322).PCB.jpg]]<br />
<br />
<br />
<br />
Some history about the Pixie transceiver.<br />
<br />
http://www.gqrp.com/The_Sprat_Pixie_File.pdf</div>Admin