Vertex Standard FT-2800M Specifiche Scaricare il pdf (Pagina 2)

40 September 2010

Programming

Yaesu offers an optional USB cable and

Windows software for programming chan-

nels and settings on this radio (part number

ADMS-2900). I did not use this software,

but if you plan to load up the radio’s 200

memory channels or change them frequently,

you might consider it.

I found that after about five minutes of

self training, manual programming is fairly

simple. It took about 10 minutes to program

10 channels with repeater parameters —

receive frequency (split is automatic), tone

frequency, tone type and channel name.

Step one is to repeatedly press the

MW/D/

button until

VFO

is displayed on the

LCD. Then turn the frequency knob or use

the microphone keypad to enter the receive

frequency.

Next, pressing the

SET/MHz

button

for a second brings up an alphabetically

ordered and numbered menu of settings

(menu mode). Use the large knob to scroll

through the menu items until

TN FRQ

(tone

frequency) is displayed. Press the

SET/MHz

button to select this item, turn the large knob

to scroll to the appropriate subaudible tone

and press the

SET/MHz

button again to set

the selection. The tone frequency is now set.

To set the tone type, while still in the menu

mode turn the large knob to

SQL.TYP

. Press

SET/MHz

, select

TONE

from among

TONE/

TSQL/DCS/RV TN/OFF

and press

SET/MHz

again. This last action displays a

on the

LCD, indicating that

TONE

is on. Pressing and

holding

SET/MHz

again exits the menu mode.

At this point, all the repeater parameters

are set in the VFO buffer. Press and hold the

MW/D/MR

button to get into the memory stor-

age mode. The next available channel number

blinks on the LCD. Press and hold the

MW/D/

button again to write the contents of the

VFO buffer into the memory channel. You

could select a different channel to write to by

turning the large knob.

Next, enter a name for the memory chan-

nel. Repeatedly press the

MW/D/MR

button

until

is displayed on the LCD, indicating

that the radio is in memory read mode. While

in this mode, press the

SET/MHz

button, and

scroll to

NM SET

, press the

SET/MHz

button

again to enter a channel name one letter at a

time. Turn the large knob to scroll through

the character set. Press the

SET/MHz

button

to set each character. Press and hold

SET/

MHz

again to exit the menu mode. Although

this procedure may sound tedious, it’s easier

to do than describe — and easier yet with the

optional software.

This example should give you a good sense

of what’s required to set up the many features

in this radio. Menu mode operation is funda-

mentally consistent, and the method to turn on

and customize features is the same. However,

some buttons on the FT-2900R are used differ-

Table 1

Yaesu FT-2900R, serial number 9I041737

Manufacturer’s Speciﬁcations Measured in ARRL Lab

Frequency coverage: Receive, 136-174 MHz; Receive and transmit, as speciﬁed.

transmit, 144-148 MHz.

Modes: FM, NFM. As speciﬁed.

Power requirements: Receive: <700 mA, Receive, 760 mA (max volume, max

<300 mA (standby); transmit, 15, 9, 5, 4 A lights, no signal); standby, 160 mA

(

high

low 3

low 2

low 1

) (no lights). Transmit, 14, 8.9, 5.5,

at 13.8 V dc ±15%. 4.3 A (high, low 3, low 2, low 1).

Receiver Receiver Dynamic Testing

FM sensitivity: 12 dB SINAD, <0.4 µV. For 12 dB SINAD, 0.2 µV; 0.2 µV

at 138 MHz, 0.21 µV at 162 MHz.

FM two-tone, third-order IMD dynamic range: 20 kHz offset: 67 dB*;

Not speciﬁed. 10 MHz offset: 89 dB.

FM two-tone, second-order IMD dynamic range: 146 MHz, 92 dB.

Not speciﬁed.

Adjacent-channel rejection: Not speciﬁed. 20 kHz offset: 67 dB.

Spurious response: Not speciﬁed. IF rejection, 101 dB;

image rejection, 76 dB.

Squelch sensitivity: Not speciﬁed. At threshold, 0.07 µV; 0.27 µV max.

S meter sensitivity: Not speciﬁed. 4.2 µV at full scale.

Audio output: 3 W at 10% THD into 4 W. 3.8 W at 10% THD into 4 W;

 THD at 1 V RMS, 1.5 %.

Transmitter Transmitter Dynamic Testing

Power output: 75, 30, 10, 5 W (

high

low 3

71.4, 27.4, 7.7, 3.8 W (

high

low 3

low 2

low 1

) at 13.8 V dc ±15%.

low 2

low 1

); 69.7 W at 11.4 V dc.

Spurious signal and harmonic suppression: >70 dB, meets FCC requirements.

>60 dB.

Transmit-receive turnaround time (PTT release Squelch on, S9 signal, 116 ms.

to 50% of full audio output): Not speciﬁed.

Receive-transmit turnaround time (“tx delay”): 132 ms.

Not speciﬁed.

Size (height, width, depth): 1.6 × 5.5 × 5.7 inches; weight, 2.6 pounds.

Price: FT-2900R, $160; ADMS-2900 programming software/cable, $50.

*Measurement was noise limited.

ently depending upon feature, so the owner’s

manual may become your best friend.

New Features

The FT-2900R includes several new

features shared with the latest generation of

Yaesu VHF/UHF FM transceivers. A few are

proprietary to Yaesu, which may make them

useful only if your friends have compatible

radios.

Enhanced Paging and

Code Squelch (EPCS)

EPCS uses a dedicated microproces-

sor and paging memory to provide paging

and selective calling features. Two CTCSS

(continuous tone coded squelch system)

tone pairs are used — one pair for sending

and another for receiving. A tone pair is sent

to the receiving station when paging. If the

tone pair matches those stored in the receiving

radio, its squelch will open. You could use

the same tones in several radios for closed

group calling or unique tone pairs to page

individual radios. This coded squelch system

could be used to keep your radio quiet until

calls directed only to you are received. While

the radio is squelched, you cannot hear activ-

ity on frequency. So, before initiating a page,

listen to make sure the frequency is not in use.

This feature can be used to make a bell ringing

sound when your tone pair is decoded. The

number of rings is settable.

EPCS settings can be saved to individual

memory channels, so once programmed, it

is pretty simple to use this feature when you

want to. For public service activities you

could have different transmit tone pairs on

different channels (with all other settings the

same) to page different groups or individuals

participating in your activity.

Memory Bank Operation

This feature lets you group channels that

are not necessarily sequential. For example,

I have my programmed channels 5, 11 and

13 assigned to bank 1. There are eight banks

available, and the same channels can be as-

1 2 3 4 5 6 7

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