Make any changes or corrections to the data fields. When finished, click on the UPDATE button.
Author
Callsign
Email
Security (anti-spam) Question: How many dits in 72?
Dits
Description
Record #
41
RevDate
Mon, 19 Apr 9841 13:55:50 -0600
Details
This VFO is adapted from the 2N2-40 with some modifications to use a variable capacitor and also changes to the buffer network. The bias voltage for the oscillator is obtained using a LM317 adjusted to this intermediate voltage. I plan to later add a second larger variable capacitor to expand the tuning range. All the pF value caps should be NPO.
Schematic=
Bipolar VFO.jpg
Return to SEARCH
Please use unique filenames that include your callsign. Existing files will be overwritten
The Schematic file must be a GIF or JPG. The Auxfile must be a ZIP
Replace Schematic
Add an AuxFile
Return to SEARCH