IC756/TL922 keying - Any Suggestion?
 

Hi, i'm searching a simply amp keying circuit, just to control a Kenwood
TL922 with an ICOM IC 756 Pro III.
What do you suggest to me?

73 de Alex ik8xir

IC756/TL922 keying - Any Suggestion?
 

"Alex" schreef in bericht
...
Hi, i'm searching a simply amp keying circuit, just to control a Kenwood
TL922 with an ICOM IC 756 Pro III.
What do you suggest to me?

73 de Alex ik8xir


Use an extern relais , otherwise you burn the very little tx relais (my
friend dit it with the tl922 )
because the key voltage is 120v
suc6

IC756/TL922 keying - Any Suggestion?
 

Hi, i'm searching a simply amp keying circuit, just to control a Kenwood
TL922 with an ICOM IC 756 Pro III.
What do you suggest to me?

Use an extern relais , otherwise you burn the very little tx relais (my
friend dit it with the tl922 )
because the key voltage is 120v
=================================
Would a high voltage switching transistor with/without an opto-coupler
circuit not be more reliable ?
The opto-coupler circuit can be tailored for the transceiver's output
and a cheap High Voltage transistor could excite the amplifier.
Just a thought.

Frank GM0CSZ / KN6WH

IC756/TL922 keying - Any Suggestion?
 

"Highland Ham" wrote:

Would a high voltage switching transistor with/without an opto-coupler
circuit not be more reliable ?
The opto-coupler circuit can be tailored for the transceiver's output
and a cheap High Voltage transistor could excite the amplifier.
Just a thought.

Frank GM0CSZ / KN6WH

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Many thanks Frank i'm searching for this kind of circuit, have you a
printable (.jpg, .bmp, .gif, .tif etc.)) version with the complete parts
list?

best 73 de Alex IK8XIR / N6XIR

IC756/TL922 keying - Any Suggestion?
 

"on4ahf" wrote

Use an extern relais , otherwise you burn the very little tx relais (my
friend dit it with the tl922 )
because the key voltage is 120v
suc6



Thank you for your help, I know that (about the very little reed relay
inside the rtx), for this reason i'm searching for a electronic circuit,
with an switching absorption "greater" less than 500mA @ 16Vdc (as declared
by Icom). A transistor feat. circuit i believe will be fine.

73 de Alex IK8XIR / N6XIR