| *** Build the AC-1 Junior *** |
| The AC-1 Junior, One Tube QRP Transmitter, is a follow-up to the first kit I offered, the Glowbug 40. This kit is very similar to the Glowbug 40 kit but it includes some extra features not found in the first kit. These features include automatic antenna switching, break-in keying and a 3-position crystal selection switch so you can switch between 3 crystals in the same band. Output circuit is a pi-network for reduced harmonic output and the kit includes a high quality silk screened enclosure. |
| AC-1 Junior Features: * Can be built for the 40 or 30 meter band with approximately 1 watt output. * Crystal selection switch allows switching between crystals in the same band. * Safe voltage (9 volts or less) at key. Safe for you and your keyer. * Built-in high voltage power supply. * Break-in keying. * T/R circuit is a relay so it's not frequency selective. You can keep the AC-1 Junior in-line with your receiver while monitoring other bands. |
Here Is What's Included In Kit:
Punched, Powder Coated & Silk Screened .040 Aluminum Enclosure
All Components, Hardware & 6AQ5/6005 Tube
PC Board Transformer & Wall Transformer
7.030 MHz & 7.040 MHz Crystals, Including PC Board Sockets For Crystals
Professional Quality Circuit Board, With Solder Mask & Silk Screen
Detailed Assembly Instructions
Kit price is $99.97 plus 15.00 for insured USPS Priority Mail shipping. Shipping price is for the 50 US states.
Contact me for correct amount before ordering if you are outside the 50 US states. Kits are in stock and
ready to ship.
CLICK HERE for a printable order form. This is a document file. Open or save and open in Windows
WordPad or similar word processor. This order form can be filled out using your word processor. Currently
payments by credit card or Paypal are not accepted.
Questions? Click HERE to email KG4HSY.
Additional crystals are available from AF4K, click HERE.
Punched, Powder Coated & Silk Screened .040 Aluminum Enclosure
All Components, Hardware & 6AQ5/6005 Tube
PC Board Transformer & Wall Transformer
7.030 MHz & 7.040 MHz Crystals, Including PC Board Sockets For Crystals
Professional Quality Circuit Board, With Solder Mask & Silk Screen
Detailed Assembly Instructions
Kit price is $99.97 plus 15.00 for insured USPS Priority Mail shipping. Shipping price is for the 50 US states.
Contact me for correct amount before ordering if you are outside the 50 US states. Kits are in stock and
ready to ship.
CLICK HERE for a printable order form. This is a document file. Open or save and open in Windows
WordPad or similar word processor. This order form can be filled out using your word processor. Currently
payments by credit card or Paypal are not accepted.
Questions? Click HERE to email KG4HSY.
Additional crystals are available from AF4K, click HERE.
| How it works... The 6AQ5/6005 tube is connected as an electron-coupled crystal oscillator. The output of the oscillator is routed through a pi-network that transforms the high impedance output of the oscillator to a low impedance of about 50 ohms to match the antenna's input impedance. The pi-network also reduces the harmonic output of the transmitter to meet FCC requirements. The key operates a high speed relay which keys the tube cathode and also does the antenna switching. |
