KA8MAV - PTO/VFO Tuned Tiny-Tornado

KA8MAV

PTO/VFO Tuned Tiny-Tornado™ QRPp CW Transceiver
Built by KA8MAV

Tiny-Tornado TT-40 REV2c Build Date: 02/01/2001 This is the latest version of my Tiny-Tornado. I built this using a heavily modified REV2c kit. What makes this rig different? It is PTO/VFO tuned! It tunes the entire 40-meter band and puts out 1-watt as measured with a KD1JV "Melt Solder" RMS RF Power Meter into a 50-ohm load.	PTO/VFO Tuned 40-meter Tiny-Tornado by KA8MAV

Tiny-Tornado TT-40 REV2c Build Date: 02/01/2001 As you can see... it's tiny! The case is a highly polished LMB aluminum chassis No. 872 which measures only 3-1/4" by 2-1/8" by 1-1/8" tall.	PTO/VFO Tuned 40-meter Tiny-Tornado by KA8MAV

Tiny-Tornado TT-40 REV2c Build Date: 02/01/2001 Here's what's inside. Yes, I know the PTO/VFO needs shielded from the transceiver. But, I ran out of room. However, I do have some copper mesh shielding tape on the way and I will use this to complete the rig. It's actually fairly stable (better than some rigs I heard on "Straight Key Night!"). I'm sure shielding will even further improve it's performance. I designed the PTO/VFO PCB based on the PTO kit by WA6OTP. Modifications to the Tiny-Tornado were done with the help of KG6CYN.	PTO/VFO Tuned 40-meter Tiny-Tornado by KA8MAV

PTO/VFO Tiny-Tornado Schematic This schematic and design are currently under development and may change at any time without notice. As always, I am open to suggestions which improve on the design and its performance.	Click on the schematic for a full-size image.

PTO/VFO Schematic This PTO/VFO is based on the design by WA6OTP and used with permission. I have also made a few changes. This schematic and design are currently under development and may change at any time without notice. As always, I am open to suggestions which improve on the design and its performance.	Click on the schematic for a full-size image.

	Purchase a Tiny-Tornado Kit by KA8MAV Purchase a Permeability Tuned Oscillator (PTO) kit by WA6OTP
To Be Continued...

BACK

If you arrived here from a search engine and do not see the
navigation bar at the left of the screen, please Click Here.

The QRPp International Radio Club is funded by the generous contributions of users like yourself. Please click the "Donate" button below and donate any dollar amount you like. Your support is appreciated. Thank you!

Search WWW Search QRPp-I

All images and information found on this site are copyrighted and MAY NOT be used without permission.
All copyrights and registered trademarks are those of their respective owners.

QRPp International and this Web site are not affiliated with the publication called "QRPp", the Web site "QRPp.com", Doug Hendricks, KI6DS, the NorCal QRP club, the QRP Amateur Radio Club International (QRP ARCI), or any other club or organization.

The names "QRPp International", "QRPp International Radio Club", "QRPp-I.com", "QRPp-I", "Tiny-Tornado", and the "TT-xx" series of transceiver kits are copyright protected and are trademarks and/or service marks of the QRPp International Radio Club and/or KA8MAV and may not be used without permission.