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3.3.6 Wiring Your HF Transceiver for Direct CW Keying
The PK-232 can directly key CW with HF and VHF multi-mode
transceivers. This requires that a cable be wired from the CW KEY OUT
jack on the PK-232's rear panel to your CW keying input of your
transceiver. Refer to the following instructions and Figure 3-3 below
to wire the PK-232 side of the cable.
Figure 3-3: Direct CW Keying Cable diagram
1. Locate an RCA connector from the PK-232's accessory bag.
2. Locate some shielded audio cable from Radio Shack or other cable
house and solder the RCA connector to the cable as shown above.
3. Locate the connector for the CW keying input to your transceiver.
These are often supplied in your transceiver's accessory kit.
4. Wire the transceiver connector as per the instructions in your
transceiver's manual for a "Straight key".
Consult your radio's instruction manual to determine if your radio
uses negative (Grid Block) or positive keying polarity. Connect the
shielded cable you just wired from the PK-232's positive (J9) or
negative (J10) keying jacks to your radio's CW key input connector.
See the Specifications on page 1-3 for maximum limits.
3.3.7 Connections for Direct FSK Operation on RTTY
Some HF SSB radios provide direct FSK (Frequency-Shift Keying) for
RTTY operation. FSK operation can be an advantage when using RTTY and
AMTOR modes and can sometimes help in HF packet operation. FSK
operation may be especially helpful if your transceiver can switch in
extra filters. Be cautious of a narrow filter as narrow filters can
limit your data rate. Direct FSK is not always recommended for data
speeds in excess of 110 bauds. Consult your transceiver's manual
regarding direct FSK operation for further recommendations.
To install and operate your PK-232 and radio in the FSK mode:
1. Connect a shielded cable from the PK-232's J7 (DIN) receptacle,
pins 1 or 4, to the radio's FSK input.
NOTE: Polarity of the FSK signals is not standardized by the radio
manufacturers. We have observed that Icom radios most often
use FSK, while Kenwood radios most often use FSKR. Consult
your transceiver's manual to identify the proper polarity.
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