Vertex Standard FT-1000MP VOX Operation Voice-Actuated T/R Switching Operation, CW Transmission

OPERATION

TRANSMITTING

VOX Operation

(Voice-Actuated T/R Switching Operation)

VOX operation allows you to activate the transmit- ter in any voice mode merely by speaking into the mi- crophone, without having to press the PTT switch.

For the VOX circuit to operate properly, three con- trols in the top access panel must be set to match your microphone and the acoustic environment of your sta- tion. Once set, these controls should not require read- justment unless you change your microphone or sta- tion location.

rFirst make sure the receiver is set for normal vol- ume on a clear channel, and preset the VOX (gain) control in the top access panel fully counterclock- wise. Also preset the A-VOX(Anti-VOX) and DLAY (VOX Delay) controls in the top access panel to their 12 o’clock positions.

rSet the RF PWR control fully CCW (to avoid creat- ing interference while you set up the VOX controls). Now press the [VOX] switch near the upper left cor- ner of the front panel.

rWithout pressing the PTT switch, speak continu- ously into the microphone while slowly adjusting the VOX control (in the top access panel), looking for the point where your voice just activates the trans- mitter. Advancing the VOX Gain control beyond this point will make the VOX excessively sensitive to random background noise in your operating room.

rNow speak intermittently into the microphone, and note the “hang time” between the moment you stop speaking and when the receiver is reactivated. This period should be just long enough so that the trans- mitter remains keyed between words, but drops back to receive during pauses. Adjust the DLAY control, if necessary, for a comfortable hang time.

The A-VOXcontrol probably needs no adjustment, but if you find that, with the microphone in its normal operating position, receiver audio from the loudspeaker trips the transmitter, advance the A-VOXcontrol more clockwise. On the other hand, if transmitter keying with the VOX keying seems sluggish or unstable when you speak into the microphone, try a more counter-clock- wise setting.

CW TRANSMISSION

There are several types of CW transmission avail- able with the MARK-VFT-1000MP. All require that you have a CW key or keyer paddles connected to either of the KEY jacks on the front or rear panel (with a 3- contact plug). You simply use the RF PWR control to set your output power.

Straight-Key Operation

rFirst preset the RF PWR control to about 12 o’clock. Select the CW mode, if you haven’t already, and for

now, make sure the [KEYER] and [BK-IN] switches near the lower right corner of the front panel are both off.

rPress the [VOX] button to turn on the VOX circuit, which provides automatic transmitter activation when you close your key. If you want to practice CW with the sidetone, you can leave the VOX off.

rTo transmit, simply close your key and advance the RF PWR control for the desired power output level.

rYou can adjust the CW sidetone volume, if neces- sary, for a comfortable level using the trimmer ac- cessible via the hole on the rear panel (see item #3 on page 34).

rRelease the key to return to receive.

You are now using semi break-in CW, in which the transmitter remains activated except during pauses in your sending. You can set the delay during which the transmitter remains on after you stop sending, by ad- justing the keyer delay setting (menu selection 7-5).

However, if you prefer full break-in (QSK) opera- tion, in which the receiver is activated between each dot and dash, simply press the [BK-IN] switch (the [VOX] switch should not be depressed).

page 54 MARK-V FT-1000MP Operating Manual