Vertex Standard FT-857 Multi Function Row m MFm IPO, ATT, NAR, Multi Function Row n MFn Cfil

FRONT PANEL CONTROL & SWITCHES

MULTI FUNCTION KEY DETAIL

Multi Function Row “m” (MFm) [IPO, ATT, NAR]

Ó	Ó	Ó
[A]	[B]	[C]

[A] Key: IPO

Press the [A](IPO) key to bypass the receiver preamplifier, thereby activating Intercept Point Optimization for improved overload char- acteristics while operating on the HF and 50 MHz bands.

The IPO feature does not function on 144/430 MHz. [B] Key: ATT

Press the [B](ATT) key to engage the receiver front-end attenuator, which will reduce all signals and noise by approximately 10 dB. The ATT feature does not function on 144/430 MHz.

[C] Key: NAR

Press the [C](NAR) key to select the low-deviation mode for HF FM operation on 29 MHz.

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Multi Function Row “n” (MFn) [CFIL,– – –,– – –]

			[A] Key: CFIL
			Press the [A](CFIL) key to select the 2.4 kHz ceramic IF filter.
			[B] Key
			Press the [B] key to select the optional IF filter which is located on the
Ó	Ó	Ó	“FIL-1” (Optional Filter 1) slot on the Main Unit.
[A]	[B]	[C]	When an optional filter is not installed on the “FIL-1” slot, this key
			function is disabled, and its label is “N/A.”
			[C] Key
			Press the [C] key to select the optional IF filter which is located on the
			“FIL-2” (Optional Filter 2) slot on the Main Unit.
			When an optional filter is not installed on the “FIL-2” slot, this key
			function is disabled, and its label is “N/A.”
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Multi Function Row “o” (MFo) [PLY1, PLY2, PLY3]

Ó	Ó	Ó
[A]	[B]	[C]

[A] Key: PLY1

Press the [A](PLY1) key to send the CW message which is memo- rized in Keyer BEACON TEXT 1.

Press and hold in the [A](PLY1) key for one second to recall Menu Mode No-011[BEACON TEXT 1] (for stores the message for the Bea- con).

[B] Key: PLY2

Press the [B](PLY2) key to send the CW message which is memo- rized in Keyer BEACON TEXT 2.

[C] Key: PLY3

Press the [C](PLY3) key to send the CW message which is memo- rized in Keyer BEACON TEXT 3.

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FT-857 Operating Manual 29