DRAKE SW 1 Instruction Manual download pdf (Page 3)

October 1997 73

Expanded Product

Review Report

Available

The ARRL Laboratory

offers a detailed test

result report on the

FT-920 that gives in-

depth, technical data

on the transceiver’s

performance, outlines

our test methods and

helps you interpret the

numbers and charts.

The report even

includes a summary

of how this radio

stacks up with similar

previously tested

units.

Request the FT-920

Test Result Report

from the ARRL

Technical Depart-

ment, 860-594-0278.

It’s $7.50 for ARRL

members and $12.50

for nonmembers,

postpaid.

Table 1

Yaesu FT-920, serial number 7F020059

Manufacturer’s Claimed Specifications Measured in the ARRL Lab

Frequency coverage: Receive, 100 kHz-30 MHz; 48-56 MHz. Receive and transmit, as specified.

transmit, 1.8-2; 3.5-4; 7-7.3; 10.1-10.15; 14-14.35;

18.068-18.168; 21-21.45; 24.89 -24.99; 28-29.7; 50-54 MHz.

Modes of operation: USB, LSB, CW, AM, FM, FSK, AFSK As specified.

Power requirement: Receive, 2.0 A (no audio); transmit, Receive, as specified; transmit, 18.5 A, tested at 13.8 V.

22 A (max), 13.5 V (±10%).

Size (height, width, depth): 5.4×16.4×12.6 inches; weight, 25.3 pounds.

Receiver Receiver Dynamic Testing

SSB/CW sensitivity, 2.4 kHz bandwidth, default preamp on, 10 dB Minimum discernible signal (MDS), 500 Hz IF filter at 8.2 MHz:

(S+N)/N: 150-250 kHz, –84 dBm; 250-500 kHz, –95 dBm; 0.5-1.8 MHz,

Freq Preamp off Preamp on

–101 dBm; 1.8-24.5 MHz, –121 dBm; 24.5-54 MHz,–125 dBm. 1.0 MHz –114 dBm –121 dBm

3.5 MHz –132 dBm –139 dBm

14 MHz –131 dBm –138 dBm

50 MHz –131 dBm –137 dBm

AM sensitivity, default preamp on, 6-kHz bandwidth, 10 dB (S+N)/N: 10 dB (S+N)/N, signal 30% modulated with a 1-kHz tone,

150-250 kHz, 40 µV; 250-500 kHz, 32 µV; 0.5-1.8 MHz, 6-kHz filter: 1.0 MHz, preamp off, 2.7 µV, preamp on,

16 µV; 1.8 24.5 MHz, 2.0 µV; 24.5-54 MHz, 1.3 µV. 1.1 µV; 3.5 MHz, preamp off, 0.36 µV, preamp on, 0.18 µV;

52 MHz, preamp off, 1.51 µV, preamp on, 0.52 µV.

FM sensitivity, 12 dB SINAD, default preamp on: 28-29.7 MHz and For 12 dB SINAD, preamp on, 12-kHz bandwidth:

50-54 MHz, 0.25 µV. 29 MHz, 0.30 µV, 52 MHz, 0.16 µV.

Blocking dynamic range: Not specified. Blocking dynamic range, 500 Hz filter at 8.2 MHz default preamp

selection.

Freq Preamp off Preamp on

1.0 MHz 133 dB 129 dB

3.5 MHz 134 dB 129 dB

14 MHz 131 dB 129 dB

50 MHz 137 dB 120 dB

Two-tone, third-order IMD dynamic range: Two-tone, third-order IMD dynamic range, 500 Hz IF

Not specified. filter at 8.2 MHz, default preamp selection:

Freq Preamp off Preamp on

1.0 MHz 95 dB 83 dB

3.5 MHz 99 dB 96 dB

14 MHz 98 dB 97 dB

50 MHz 101 dB* 99 dB

Third-order input intercept: Not specified Default preamp selection:

Freq Preamp off Preamp on

†

1.0 MHz +25.3 dBm +9.6 dBm

3.5 MHz +17.7 dBm +5.3 dBm

14 MHz +17.2 dBm +8.9 dBm

50 MHz +21.2 dBm –2.5 dBm

Second-order intercept point: Not specified 14 MHz, tuner off, preamp off, +69 dBm, preamp on, +68 dBm;

14 MHz, tuner on, preamp off, +70 dBm, preamp on, +72 dBm.

First IF rejection: > 70 dB on HF; >50 dB on VHF. 14 MHz, preamp off, 73 dB, preamp on, 106 dB.

First IF image rejection: >70 dB on HF. 14 MHz, preamp off, 67 dB; preamp on, 80.2 dB.

FM adjacent channel rejection: Not specified At 20-kHz spacing, 29 MHz, preamp off, 77 dB,

preamp on, 71 dB; 52 MHz, preamp off, 75 dB, preamp on, 69 dB.

FM two-tone, third-order IMD dynamic range: At 20-kHz spacing, 29 MHz, preamp off, 80 dB, preamp on, 70 dB;

Not specified 52 MHz, preamp off, 78 dB, preamp on, 70 dB.

S-meter sensitivity: Not specified S9 signal at 14 MHz: preamp on, 50 µV.

Squelch sensitivity: SSB, CW, RTTY, AM, preamp on, less than 2.0 µV; At threshold, FM, 29 MHz, preamp on, 0.12 µV; 50.2 MHz,

FM, preamp on, less than 0.32 µV. preamp on, 0.07µV; SSB, 14.2 MHz, preamp on, 1.36 V.

Receiver audio output: 1.5 W at <10% THD into 4 Ω. 2.7 W at <10% THD into 4 Ω.

IF/audio response: Not specified. Range at –6 dB points, (bandwidth):

CW-N (500 Hz IF filter): 309-933 Hz (624 Hz);

CW-W (2.4 kHz IF filter): 219-1888 Hz (1669 Hz);

USB (2.4 kHz IF filter): 270-1930 Hz, (1660 Hz);

LSB (2.4 kHz IF filter): 279-2007 Hz (1728 Hz).

Notch filter depth: >35 dB. As specified.

Transmitter Transmitter Dynamic Testing

Power output: SSB, CW, RTTY, and FM, 100 W maximum, SSB, CW, RTTY, and FM, as specified

AM, 25 W, continuously adjustable in all modes. (1.2-107 W); AM, as specified.

Spurious-emission suppression: 50 dB (HF bands); 60 dB (50 MHz band). 53 dB or greater on HF; greater than 60 dB

on 50 MHz. Meets FCC requirements for

equipment in its power output class and

frequency range.

SSB carrier suppression: 40 dB. 50 dB or greater.

Undesired sideband suppression: 50 dB As specified.

Third-order intermodulation distortion (IMD) See Figures 1 and 2.

products: –31 dB or better at 100 W output.

CW keyer speed range: Not specified. Approximately 6-62 WPM.

CW keying characteristics: Not specified. See Figure 3.

Transmit-receive turnaround time (PTT release to 50% PTT release to 50% audio output,

audio output): Not specified S9 signal, 18 ms.

Receive-transmit turnaround time (“tx delay”): SSB: 50% delay on, 15 ms;

Not specified. FM: 50% delay on, 47 ms.

Composite transmitted noise: Not specified. See Figures 4 and 5.

Note: Unless noted otherwise, all dynamic range measurements were taken at the ARRL Lab standard of 20 kHz.

Measurement was noise-limited at the value indicated.

†

Third-order intercept point was determined using S5 reference.

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