FRG-7700

Yaesu
FRG-7700

Specifications

Prices

The flagship in Yaesu radio offer in the eighties. Double conversion all-mode communications receiver with 0.15~30 MHz coverage in 1 MHz bands. High sensitivity, three IF bandwidths for AM mode, noise blanker, selectable AGC, two RF attenuators, digital plus analog display of the operating frequency, digital quartz clock that can be programmed to turn the receiver on and off. Optional memory unit. Ideated in Japan, year of introduction 1981.

Reference market : amateur-radio

FRG-7700 specifications

General

Frequency coverage
0.1500 ~ 29.9990 MHz [1]
Mode
CW / LSB / USB / AM / FM

Receiver

Sensitivity
CW / SSB	3 uV (0.15~0.3 MHz, 500Ω input). 2 uV (0.3~2 MHz, 500Ω input). 0.5 uV (2~30 MHz).
AM	30 uV (0.15~0.3 MHz, 500Ω input). 25 uV (0.3~2 MHz, 500Ω input). 5 uV (2~30 MHz).
FM	1 uV (2~30 MHz).
Selectivity
CW / SSB	2.7 kHz (-6dB) 8 kHz (-50dB)
AM-N (narrow)	2.7 kHz (-6dB) 8 kHz (-50dB)
AM-M (medium)	6 kHz (-6dB) 15 kHz (-50dB)
AM-W (wide)	12 kHz (-6dB) 25 kHz (-50dB)
FM	15 kHz (-6dB) 30 kHz (-40dB)
IF filter ultimate attenuation
~65dB [2]
RF attenuator
A (20dB fixed) [3] B (continuously adjustable)
DR (Dynamic Range)
82dB (50 KHz spaced signal) [2]
NB (Noise Blanker)
Yes
AGC (Automatic Gain Control)
Fast / Slow
Frequency stability
±1 kHz max within 30' warm-up. ±300 Hz max after 30' warm-up.
IF (Intermediate Frequency)
1°	48.055 MHz
2°	455 kHz
IF roofing filter
20 KHz

Features

Memory
12 regular memories [4]
Display
1 kHz frequency resolution
Antenna
SO239 50Ω (2~30 MHz) Spring terminals 500Ω (0.15~2 MHz)
Power supply
100~120 / 220~240 VAC
Power consumption
10 VA (standby). 33 VA (ON). 39 VA (ON, with memory unit).
Audio power
1.5 W on 8Ω
Audio output
Jack 6.35 mm
Connections
Jack 3.5 mm (external speaker) Jack 3.5 mm (REC) 2 x RCA (remote on/off) 5-pin DIN (ACC) Spring terminal (mute)

Mechanical and environmental data

Dimensions
334 (W) x 129 (H) x 225 (D) mm
Weight
~6kg ~6.5kg (with memory unit)

In 1 MHz segments.
This parameter, not in official data, was obtained with direct tests.
Rear panel switch.
With MU-7700 optional unit.

FRG-7700 VFO circuit :

Yaesu FRG-7700 VFO schematic diagram.
Board PB-2172: 3 x 2SC945 transistors / 3 MHz output

FRG-7700 FM unit :

Yaesu FRG-7700 FM unit schematic diagram.
Board PB-2176: TA7061 integrated circuit / 6 x 2SC945 transistors

FRG-7700 photo gallery :

Yaesu FRG-7700 photo

FRG-7700 price

We have collected for your convenience the Yaesu FRG7700 sale price (US Dollar) and its trend over time. Useful to guarantee a cheaper purchase of this radio and to put it for sale in the second-hand market. Of course offers, accessories, warranty terms and conditions can lead to different figures.

Price	Date	Condition
USD 410.00 (299GBP)	2021-aug	Second Hand Good condition, comes with AC power lead and owner's manual
USD 415.00 (515CAD)	2021-jun	Second Hand Numerous nicks scratches and imperfections on case and front panel. Turns on when plugged in and switched on, no other testing was done
USD 369.95	2011-aug	Second Hand Good condition. With original owner's manual

FRG-7700 review

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