Vertex Standard FT-1000MP AF Gain RF Gain Knob, RF PWR Knob, SUB AF Knob, Moni Knob, SQL Knob

8. AF GAIN RF GAIN Knob

The inner AF GAIN control adjusts the audio vol- ume of the main receiver VFO in the speaker or head- phones.

The outer RF GAIN control adjusts the receiver sig- nal level in front of the main receiver 1st mixer (via PIN diodes), and also the gain of the main receiver IF am- plifiers.

It is normally set fully clockwise for maximum sen- sitivity. When rotated counter-clockwise, the S-meter minimum deflection point will move up the scale. The peak deflection for a particular signal will remain the same if it is greater than the level set by this control, but the main receiver will be less sensitive to weaker signals.

This control also affects the SQL setting for main VFO-A, and should be preset fully clockwise when set- ting the squelch threshold for the VFO or on a recalled memory.

9. RF PWR Knob

This control adjusts the transmitter’s output power in all modes. The adjustment range is from approxi- mately 5 to 200 watts, except in the AM mode, where the permitted carrier level is about 5 to 50 watts. This knob also controls the carrier level for CW transmis- sion. In setting the output power, the ALC function of the meter should always be monitored, to avoid overdriving the transmitter final amplifier.

In the “Class A” SSB operating mode, the adjust- ment range for power output will be between approxi- mately 5 and 75 watts.

10.PROC Button

This button enables the RF speech processor for SSB transmission. Processing level is set by the outer control with the same name. While activated, the LED in this button glows red.

11.MONI Button

This orange button enables the transmit (RF) moni- tor in all modes (except CW, in which the monitor func- tion is always on, to produce the sidetone). While acti- vated, the LED in this button glows red.

12. SUB AF Knob

The SUB AF control adjusts the audio volume of the sub receiver VFO in the speaker or headphones.

The AF GAIN control, located above, and this SUB AF control can be rotated to adjust the relative bal- ance of receiver audio between the two receiver chan- nels during dual reception.

FRONT PANEL CONTROLS

13. MONI Knob

When activated by the [MONI] button (above), the audio level of the transmit RF monitor during transmis- sion (relative to the AF GAIN control) is adjusted by this control.

14.SQL Knob

This control sets the signal level threshold at which main VFO-A receiver audio is muted (and the green “MAIN BUSY” display indicator turns off), in all modes. This control is normally kept fully counter-clockwise, except when scanning and during FM operation.

15.METER Selector Switches

These switches determine the function of the mul- tifunction meter during transmission. The meanings of the abbreviations are as follows:

IC/SWR - Final amplifier collector current (Amps) and Standing Wave Ratio (forward: reflected).

ALC/COMP - Relative Automatic Level Control volt- age and RF speech compressor level (in dB, for SSB modes only).

VCC/MIC - Final amplifier collector voltage and microphone gain input level.

The meter indicates power output and the selected parameter during transmission, and signal strength in S-units during reception (on the main receiver). Each S-unit is approximately 6 dB.

16.ATT Selector Knob

This knob inserts 6, 12, or 18 dB (1, 2, or 3 S-units) of attenuation before the mixer to suppress band noise and reduce the possibility of overload from very strong signals.

17.IPO Button

The Intercept Point Optimization button may be used to set optimum receiver front end characteristics for a strong environment. Selecting IPO bypasses the front end RF amplifier and feeds the received signals di- rectly to the first mixer.

18. ANT [A/B RX] Buttons

[A/B] - Pressing this selects either the ANT A or B jack on the rear panel, and allows conve- nient antenna switching at the press of a but- ton. The selected antenna jack is also indi- cated at the top of the display (above the channel group number).

[RX] - Normally, the antenna connected to the ANT A or B jack is used for receive (and always used for transmitting). When this switch is pressed (display indicator on), an antenna connected to the RX ANT IN jack is used during receive.

MARK-V FT-1000MP Operating Manual page 23