this iambic keyer uses a pic16c84 or pic16f84 microcontroller to generate the dot/dash timing and key the transmitter. most modern rigs are keyed by grounding the key line. the maximum current on the keying line is usually no more than a few ma. if your transmitter has high voltage or high current on the keying line, you will need to use a relay to key the rig.
component--value
r1,r2 ------- -100k
r3,r4,r5,r6 - -5k1
r7 ----------- 1k2
c1,c2 ------0.01 mfd
c3 ----------470 pf
c4 ----------47 mfd
zd -----------5v1
t1 ---------- bc547
ic1 --- pic16f84 or pic16c84
d1 ----------1n4007
p1 -----------22k
程序-----------------------把"iambic.asm.txt"的".txt"去掉
