Reproduction Knight Broadcaster kit. This listing has multiple photos, scroll down to see them all. As stated in the details below, the kit does NOT come with vacuum tubes. This is a reproduction kit of the Knight Broadcaster – Amplifier. The kit also functions as an audio PA (Public Address) style amplifier, and has connections you can hook up a loudspeaker too. The kit is electrical equivalent to the original, with several minor changes. Our design includes a brand new, high quality, Triad isolation transformer. Appropriate changes has been made for mounting the transformer on the back, and for internal wiring. We have replaced the selenium rectifier with a modern diode. The kit comes with a prewound oscillator coil. As shown in the internal wiring photo, modern filter capacitors, smaller rectifier diode and oscillator coil, give easier and increased assembly and working room! To keeps costs as low as possible, the kit does NOT come with tubes. The circuit uses common tubes you may already have. The remaining tube is a 12AX7, probably the most common preamplifier tube in the world. We have gone to great effort, time and expense to acquire vintage style components , like those used in the original design. As shown in the parts photos, the kit currently uses vintage parts, including carbon composition resistors (may be vintage or modern manufacture), phenolic wafer tube sockets, phenolic RCA jacks, vintage terminal strips, and a vintage compression tuner capacitor. As time progresses on, these parts become harder and harder to find, and at some point may be replaced with modern equivalents. Until otherwise noted, the kit will come with the vintage parts just mentioned. The prototype in the photos used a couple carbon film resistors, but kits will come with ALL carbon composition resistors. NOTE: This kit requires good electrical and mechanical building skills, and is recommended for advanced builders. Some mechanical modifications are required, such as cutting the metal potentiometer shaft to the correct length, enlarging some holes, etc.. Some simple hole drilling to the bottom and side panels is also required. Being a first generation kit, some simple modification to parts is also necessary, such as modifying a couple of the plastic panel assembly brackets. The kit is constructed with individual fiberglass and plastic panels. The top, front and back panels of the kit are fiberglass printed circuit boards, with high durability lettering. The bottom and side panels are plastic (acrylic or similar), material. Their is a slight hue difference between the fiberglass and plastic parts. The parts are connected by plastic brackets and screws, as you can see in the internal view photo. Special blue screws are used to join the pieces together. The original manual is supplied as JPG scans on a CD-R. Note we do not supply copies of manuals. 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. It is assumed that the unit(s) will be installed and operated by qualified personnel. See our other listings for more Radio, Electronic and other RARE and UNIQUE items. NOTE : The flat and reflective surfaces cause some reflections in the photos. Vertical’lines’ on the front panel are reflections from the corrugated cardboard. With fiberglass panels and stainless steel hardware, your kit will look good for many years! Modern filter capacitors, rectifier diode and smaller coil, give increased working room. Board graphics are blurry in this photo. Brand new in box isolation transformer. CD-R with original manual scans. 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 in the photo below. See our other listings for our EXCLUSIVE PC board kits. The item “UNBUILT Knight BROADCASTER vintage vacuum tube AM radio transmitter repro kit” is in sale since Monday, April 29, 2019. This item is in the category “Collectibles\Radio, Phonograph, TV, Phone\Radios\Tube Radios\1960-Now”. The seller is “ppelectronics” and is located in Middlesex, New Jersey. This item can be shipped worldwide.
- Country/Region of Manufacture: United States
