Vertex Standard FT-857 Operating Manual page 18

FCC ID: K66FT-857
Operating Manual
Press the [A](IPO) key to bypass the receiver preamplifier, thereby activating Intercept Point Optimization for improved
overload characteristics 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 required for HF FM operation on 29 MHz.
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 "FIL-1" (Optional Filter 1) slot on the Main Unit.
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."
Multi Function Row "o" (MFo) [PLY1, PLY2, PLY3]
[A] Key: PLY1
Press the [A](PLY1) key to send the CW message which is memorized in BEACON TEXT 1.
[B] Key: PLY2
Press the [B](PLY2) key to send the CW message which is memorized in Keyer BEACON TEXT 2.
[C] Key: PLY3
Press the [C](PLY3) key to send the CW message which is memorized in Keyer BEACON TEXT 3.
Multi Function Row "p" (MFp) [DNR, DNF, DBF]
[A] Key: DNR
Press the [A](DNR) key to activate the DSP Noise Reduction system.
Press and hold in the [A](DNR) key for one second recall Menu Mode No-049 [DSP NR LEVEL] (for setting the degree
of DSP Noise Reduction).
[B] Key: DNF
Vertex Standard Co., Ltd.
18