Vertex Standard FT-1000MP manual Keyer Settings, CW Pitch Setting and Spot Tone

OPERATION

TRANSMITTING

Keyer Settings

Keyer Dot & Dash Weighting - menu selections 7- 1 and 7-2adjust the Dot:Space and Dash:Space weight- ing. Default values are “10” (1:1) for Dot:Space, and “30” (3:1) for Dash:Space.

Keyer Delay - For QSK (break-in) CW operation, the switchover time delay from Tx to Rx can be ad- justed from 0 seconds (full break-in) to 5.10 seconds (in 10-msec) using menu selection 7-5. Note that this provides a separate “hang time” adjustment from the “VOX Delay” setting used during voice operation.

CW Break-In- The switching time of the CW car- rier waveform can be adjusted from 0 to 30 millisec- onds for use with linear amplifiers with T/R switching circuits not designed for full-QSK operation. This fea- ture provides a programmable delay in the total CW envelope character string,not a simple truncation of the first character. menu selection 7-4controls the time de- lay. See also “Linear Amplifier Operation” on page 12 for more details.

CW Pitch Setting and Spot Tone

In the CW mode (only), pressing the [SPOT] switch on the lower edge of the front panel activates the CW sidetone, which is also used as a spotting oscillator. The frequency of this tone is also (exactly) the fre- quency at which your transmitted signal will appear relative to that of the incoming sig- nal.

Therefore, if you match the pitch of the SPOT oscillator’s tone to the pitch of an incoming signal, you will be exactly “zero beat” with that station’s CW sig- nal. In a DX pile-up situation, you can match your

transceiver’s SPOT tone with that of the station being worked by the DX station, so as to be “next in line” on the same frequency. This SPOT signal is centered in the receiver section’s IF passband, as well, which en- sures that you will not lose track of his signal when switching to a narrower filter. Of course, you must turn off the [SPOT] switch once frequency alignment has been completed.

The CW pitch can be set from 300 ~ 1050 Hz (in 50-Hz increments) to match your personal operating preference. The CW Pitch feature adjusts the amount of offset from “zero beat” of your CW carrier, as well as the corresponding pitch of the CW SPOT tone; it also adjusts the center frequency of the receiver’s IF pass- band, so as to be aligned with the other offset param- eters just mentioned. The CW Pitch may also be ad- justed to match that used by popular TNC (Terminal Node Controller) units and other CW decoders. While adjusting the pitch, you can have the frequency shown in the Clarifier sub-display by enabling it via menu se- lection 3-5.

To adjust the CW pitch (and SPOT tone along with it), press the [SPOT] switch, then rotate the PITCH con- trol to set the tone to the pitch you prefer, or that used by your TNC or CW decoder. If the sub display is en- abled for indication of the CW pitch, you can view the pitch frequency as you adjust it. The SPOT tone vol- ume can be adjusted using the SIDETONE potentiom- eter, accessible on the rear panel of the transceiver).

In addition to the spotting oscillator, the directional tuning meter provides a constant visual indication of any signal at the center of the IF passband (if not too weak). You can just tune so that the segment flashes in sync with the signal of interest when it is centered (see page 41).

page 56 MARK-V FT-1000MP Operating Manual