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NEW - DELUXE - Easy to assemble - PC BOARD VERSION - Reproduction Knight Broadcaster kit
In addition to the gallery photos, this listing hasextra photos with captions in the
description body below, scroll through to see them all.
This is a custom produced kit, and has up to a 10 business day handling time before shipping.
NOTE: Kit comes with 9AU7 preamplifier tube, but NOT two 50C5 tubes.
NOTE: This is the Deluxe PC board kit version, see our other listings for the original point-to-point wired version
Kit is available with a dual 115/230 volt primary transformer, for people in countries requiring 230 volts operation. Request this option if necessary, otherwise you may receive a 115 volt primary transformer.
The sellermakes 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). Not for sale to, or use by minors.
BLACK or GRAY case available, your choice, specify when is our new, deluxe, PC (Printed Circuit) board version, reproduction kit of the Knight Broadcaster - Amplifier. The Knight Broadcaster Amplifier is a low power (100mW, Part 15 compliant) AM transmitter. You can learn more on the Internet if you are unfamiliar with it.
Three tube design, transmits your mono voice or music signalto any standard AM radio receiver using a microphone (not included), or high level inputs. High level inputs can be from aMP3 player, iPod, iPhone, cassette player, etc..The kit also functions as a PA (Public Address) style audio amplifier, and has connections you can hook up a loudspeaker too. The audio input connection is by the included 3.5mm stereo jack, shown mounted on front panel. Stereo signals are mixed to mono on the board. A 2-pin screw terminal connector is located on the board for the PA loudspeaker connection.
This version of the kit must be housed and operated in an enclosure, and comes with your choice of a black or gray plastic case. User must drill holes as necessary for construction.The kit is electrical equivalent to the original, with several minor changes. Our design includes a brand new, high quality, Triad safety isolation transformer. Domestic orders will receive a110VAC primary transformer. International orders will receive a 110-220V dual primary version. Theselenium rectifier has been replaced with a modern silicon diode. Kit comes with a prewound oscillator coil. Kit uses carbon film resistors. Kit includes several fixed capacitors for tuning, in place of acostly variable tuning capacitor. If desired, the user can install a variable or trimmer capacitor (not supplied), for variable frequency adjustment. Kit uses an externalwire antenna,not shown connected inphotos. Kit comes complete with all parts as shown. Design includes thermal protector in case of excess heat generation. Plastic case is not compromised, even with fan not running.
In order to reduce costs, and improve operation, we have redesigned the circuit to use aless expensive 9AU7 preamplifier tube. We have also included a switch, to select between one or twosections of the preamplifier tube, to prevent overloading with high level signals, and improvesignal to noise ratio. The pinout of the 9AU7 is the same as the original12AX7, and the circuit can be easilymodifiedto use that tube if desired. NOTE: This kit requires good electrical and mechanical building skills, and is recommended for advanced builders. Assembled kits can not be returned.Some simple mechanical modifications are required, such ascuttingthe metalpotentiometer shaft to the correct length, drilling holes in the plastic cabinet,etc.. Triad isolation transformer may be boxed or unboxed (bulk purchase). No warranty on vacuum tubes. Assembled kits can not be returned.
The original manualis supplied as a PDF andfileon a CD-R. An addendum assembly notes file issupplied in RTF format. Note we do not supply copies of manuals. Kit must be in original, unbuilt condition for refund. Original shipping cost not refundable. The kit is only for sale people with experience building and operated line powered devices. The kit must be operated under FCC Part 15 regulations at all times. This unit must only be operated with the supplied line isolation transformer. Not for sale to, or use by minors. User assumes all liability.
See our other listings for more Radio, Electronic and other RARE and UNIQUE items.
SHIPPING information
Buyer pays actual Priority Mail Medium Flat Rate box shipping cost.
Kit uses an externalwire antenna,not showninphotos.
Includes fan and thermal protector mounted on board.
Easy PC board assembly, minimal wiring. Kit does NOT include 50C5 tubes.
Your choice of black or gray case, specify when ordering.
Brand new, Triad isolation transformer. Kit is available with a dual 115/230 volt primary transformer, for people in countries requiring 230 volts operation. Request this option if necessary, otherwise you may receive a 115 volt primary transformer.
No AC point to point wiring. All connections clearly marked on board.
CD-R with original manual, and addendum instructions.
See our other listings, for an original, point-to-point assembly design.
For people interested in Heathkit projects, see our reproduction CR-1 crystal radio kits
(standard and low cost versions), and our EXCLUSIVE PC board kits inthephoto below.
See our other listings for our EXCLUSIVE PC board kits.
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