Schematic
11
EZRX 20170527
Page 1: ...o set the frequency It is a direct conversion design employing a front end bandpass filter NE602 mixer and LM386 audio amplifier Our Easy Receiver is designed to work with our Easy Transmitter Easy Au...
Page 2: ...es to QRPKITS com In many cases it may be faster and cheaper to pull a replacement from your parts supply but please let us know if we missed something Use the first column to check the parts as you i...
Page 3: ...Identification Note Parts included in the kit may vary slightly from those shown in photograph This is due to changes in manufacturers or suppliers and does not affect the kit performance 3 EZRX 2017...
Page 4: ...nolythic 3 C2 C10 C16 1000pF 102 CAPACITOR monolythic 6 0 1uF 104 CAPACITOR monolythic 3 C15 C18 C19 10uF 10 uf ELEC CAPACITOR 25V 2 C17 C21 100uF 100uf ELEC CAPACITOR 25V 3 L1 L2 L3 3 3uH org org gol...
Page 5: ...old R1 5 75K 1 yel vio grn brn brn R3 432 1 yel org red blk brn Ceramic and Molded Capacitors First insert and solder the molded capacitors C4 4 7pF 4 7 CAPACITOR disk ceramic C5 27pF 27 CAPACITOR dis...
Page 6: ...gold silver INDUCTOR molded L2 3 3uH org org gold silver INDUCTOR molded L3 3 3uH org org gold silver INDUCTOR molded D2 1N5234 234B glass body DIODE D1 1N5401 1N5401 Large Black DIODE D3 1N5817 1N581...
Page 7: ...fuse along with diode D3 serves to protect against reverse polarity damage to the receiver components For REV1B and later boards the connections for power audio and antenna input along with ground are...
Page 8: ...Connections to Board 8 EZRX 20170527...
Page 9: ...to use If using a receiver tune it to a frequency such as 7 025 or other frequency on which you want the Easy Rx reception range to be centered Place R2 the tuning knob on the left to the middle of it...
Page 10: ...eaker or headphones check the local oscillator operation by placing it near another receiver and listening for the Easy RX local Oscillator Tune C6 if needed to locate the oscillator in the second Rec...
Page 11: ...Schematic 11 EZRX 20170527...
