Yaesu Vertex FTH-2070 Technical - MMI Technical Resource

Battery Life w/FNB-16 (5-5-90 duty): 8.1hrs. (VHF) and 7.0hrs. (UHF)

Operating Ambient Temperature Range: -22°F to +140°F (-30°C to +60°C)

Operating Ambient Humidity (Max.): 95% @ +50°C

Frequency Stability: ą5ppm

RF Input-Output Impedance: 50Ω

Audio Output Impedance: 8Ω

Dimensions: 7.8" x 2.6" x 1.7" (200 x 66 x 43 mm)

Weight: 29oz. (820g) w/FNB-16

Receiver

Circuit Type: Double-Conversion Superheterodyne

Intermediate Frequencies: 45MHz and 455kHz

Sensitivity: 0.25µV (VHF) and 0.35µV (UHF) For 12dB SINAD

Adjacent Channel Selectivity: 70dB

Intermodulation: 70dB (VHF) and 75dB (UHF)

Spurious and Image Rejection: 70dB

Conducted Spurious Emissions: 50dBm

Audio Response: +3/-8dB From The 6dB/Oct. De-emphasis Curve

Audio Output: 500mW Into 4Ω w/<5% THD

Hum and Noise: 45dB

Transmitter

RF Power Output: 5/1W (Both Bands)

Modulation: 16K0F3E

Maximum Deviation: ±5kHz

Conducted Spurious Emissions: >60dBc

FM Hum and Noise: 47dB

Audio Response: +1/-3dB From The 6dB/Oct. Pre-emphasis Curve

Audio Distortion: <5%

Power Amplifier Modules: M57796H (VHF) and M57797H (UHF)

Features

5 Watts Power Output

Built-In CTCSS Encoder/Decoder

Programmable VFO Steps: 5kHz (VHF) and 12.5kHz (UHF) Steps

32 Memories with 4-Character Alpha/Numeric Labels

Invertible LCD Display

TX Time-Out Timer (TOT)

TX Time-Out Resume Timer

Busy Carrier Lock-Out and Busy Tone Lock-Out

PC Programmable

Versatile Scanning Features Including Priority Scan

FCC Type Accepted for Marine Use

Aluminum Diecast Chassis

MIL-STD 810C/D/E

Accessories

FTT-5: DTMF Keypad

FDS-1: DCS/DPL Encoder/Decoder

FTE-11: Tone Burst Encoder

CD-11: Rapid Vehicular Charger

FMA-2070: Mobile Charger/Amplifier

FNB-15: 12V 600mAh, Ni-Cd Battery Pack

FNB-16: 12V 1200mAh, Ni-Cd Battery Pack

FNB-16IS: 12V 1200mAh, Ni-Cd Intrinsically Safe Battery For Use w/IS Radio

FSU-1083: Voice Inversion Encryption

FSU-460: High Security Rolling Code Encryption

F2D-4: Two-Tone Sequential Decoder (Tone Groups 1, 2, 3)

F2D-4B: Two-Tone Sequential Decoder (Tone Groups 4, 5, 6)

MH-20A12C: Speaker Microphone

NC-35: Desktop Rapid Charger

NC-36: 6-Unit Multi-Charger

LCC-2070A: Leather Case

LCS-2: Belt Swivel Attachment For LCC-2070A

VPL-1D: Radio to Computer Programming Cable w/Software

VPL-2070: Programming Adapter Cable

Serial Numbers
For all Yaesu/Vertex radios that I've seen, the serial numbers are in the format of YPXXXXXX where "Y" is the production year, "P" is the production run and "XXXXXX" is the radio's unique number.

Accessory Connector Pinout

Pin 1 is the de-emphasized and amplified audio normally going to the speaker. When the accessory plug is connected, this pin will be pushed in, disconnecting the radio's internal speaker. The audio will then be routed out this connector. When the vehicular adapter is used, 12V is placed on pin 9, disconnecting the radio's antenna, via relay, and creating a path to the accessory connector (pin 4) for connection to an external antenna provided by the mobile charger/amplifier.

Disassembling Instructions
Disassembling this radio can be very confusing if you don't know exactly where to start and what to do. Here are step by step instructions on how to take this radio apart.
1. Take antenna off and take nut off connector.
2. Pull knobs off volume and channel selector.
3. On the bottom side of the radio, unscrew the two screws that are closest to the rear of the case.
4. Use a 1.5mm allen wrench to unscrew the six screws holding the front panel on.
5. Unscrew the seven screws that were behind the front panel.
6. Unscrew the two screws on top of the radio (behind the LCD, knobs, etc.).
7. Pull straight up on the top panel.
8. Gently pull the two halves of the radio apart and watch for ribbon cable and wires.
9. Disconnect the ribbon cable on rear half of the radio since it is the easiest side to put back together.

VCO Alignment
Use the graphic below for VCO alignment. To check TX VCV press PTT while measuring voltage on the "TX" test point. Use a dummy load on the antenna port during these tests.
FTH-2070 VCO Diagram

Step	Test Point	Frequency	Voltage	Trim Cap
1	RX	170MHz	4.0V	TC2
2	RX	150MHz	1.2V	TC2
3	RX	470MHz	4.0V	TC1
4	RX	450MHz	2.0V	TC1
5	TX	170MHz	3.5V	TC4
6	TX	150MHz	2.5V	TC4
7	TX	470MHz	3.5V	TC3
8	TX	450MHz	2.5V	TC3

CTCSS Tone Chart
You'll need this tone chart when time comes to program your radio.

Tone	#	Tone	#	Tone	#	Tone	#
67.0	64	97.4	59	136.5	25	192.8	20
71.9	32	100.0	14	141.3	09	203.5	04
74.4	63	103.5	29	146.2	24	210.7	19
77.0	16	107.2	13	151.4	08	218.1	03
79.7	62	110.9	28	156.7	23	225.7	18
82.5	31	114.8	12	162.2	07	233.6	02
85.4	61	118.8	27	167.9	22	241.8	17
88.5	15	123.0	11	173.8	06	250.3	01
91.5	60	127.3	26	179.9	21	None	49
94.8	30	131.8	10	186.2	05

CTCSS Squelch Tail Elimination
The FTH-2070 uses the MX-Com MX365 CTCSS Encode/Decode IC. Even though it can generate a reverse burst, it does not recognize this method of squelch tail elimination on receive. It does, however, recognize another means of squelch tail elimination on transmitters that turn the PL off a few hundred milliseconds before transmitter drop-out.

Cloning
Cloning the FTH-2070 can be accomplished by, first, enabling clone mode. This is done by holding down [PRI] while powering on the radio. "TXRX" will then flash in the display. While the radios are connected via the cloning cable (part number unknown) press [MON/R] on the RX radio and then [C/M] on the TX radio. "TX" and "RX" will be shown respectively. When the radios are done cloning "TXRX" will flash again.
Remember:
1. Connect radios with cloning cable
2. Power radios on with [PRI] depressed
3. Press [MON/R] on RX radio
4. Press [C/M] on TX radio