NOTE: Kit now comes with audio preamplifier tube
This listing has multiple photos, scroll down to see them all.
This is our very own design, EASY printed circuit board assembly version,
of our 1-Tube AM transmitter kit.
This revision incorporates COURSE and FINE tuning, which greatly eases setup
This kit has the following improvements over our simpler perfboard kit version:
Complete with electret desktop microphone
Input tube preamplifier
Course and fine tuning controls.
3.5mm stereo input jack for high level inputs
potentiometer input level control
RF ground plane PC board design
This board incorporates a transmitter tube, AND audio preamplifier tube. The
kit will work with low level microphone signals, and high level inputs from
devices like iPod and MP3 players, audio receivers, tape decks etc..
Our latest circuit revision has a course tuning trimmer capacitor, and fine
tuning main capacitor, which greatly improves setup and operation.
Kit comes complete, including tested tubes, no warranty on vacuum tubes. High
quality fiberglass circuit board. Variable capacitor allows tuning across the
upper AM band. Fixed coils, no coil winding necessary. Single sided printed
circuit board design without plated through holes, so it is easy for the
beginner to solder and unsolder. Includes nylon hardware for board support,
which will not scratch surfaces. The board has rounded corners, and you can
wrap colored tape around it (not supplied), to give it an enclosure look. With
printed instructions. Kit requires one AA battery, and three 9 volt batteries,
not included. Ships by First Class Mail in a padded envelope.
This is not an entry level kit for beginners, it is best suited for those with
previous kit building experience, and/or those with experience with low power
radio transmitter kits.
The seller makes no representation of any item(s) sold to be fit for a
particular purpose and assumes no liability for its use or misuse. It is
assumed that the unit(s) will be installed and operated by qualified personnel.
The purchaser agrees that the seller shall not be held responsible or liable
for any injuries or damages, whether incidental or consequential, associated in
any way with the item(s).
Kit comes with audio preamplifier tube,
and 9 volt battery connectors, not shown in photo.
Includes desktop microphone.
PC board has holes for illuminating vacuum tubes
from underneath with included LEDs.
See our other listings for TWO reproduction versions of the Knight Broadcaster
Original style and PC board version!
See our other listings, for our very own exclusive design,
easy Printed Circuit Board assembly 1-tube radio kit!
Kit has B+ eliminator circuitry, operates off a single AA battery!!
See our other listings, for more of our EXCLUSIVE PC board kits,
including Knight Allied and Heathkit reproduction kits.