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FT-2900R Alignment | Radioaficion Ham Radio

FT-2900R Alignment

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Yaesu FT-2900R Alignment

Introduction

The FT-2900R is carefully aligned at the factory for the specified performance across the amateur band. Realignment should therefore not be necessary except in the event of  a  component  failure.  Only  an  authorized  Vertex  Standard  representative  should perform all component replacement and service, or the warranty policy may be void. The following procedures cover the adjustments that are not normally required once the  transceiver  has  left  the  factory.  However,  if  damage  occurs  and  some  parts subsequently are replaced, realignment may be required. If a sudden problem occurs during normal operation, it is likely due to component failure; realignment should not be done until after the faulty component has been replaced.

We recommend that servicing be performed only by authorized Vertex Standard service technicians who are experienced with the circuitry and fully equipped for repair and alignment. If a fault is suspected, contact the dealer from whom the transceiver was purchased  for  instructions  regarding  repair.  Authorized  Vertex  Standard  service technicians  realign  all  circuits  and  make  complete  performance  checks  to  ensure compliance with factory specifications after replacing any faulty components. Those who do undertake any of the following alignments are cautioned to proceed at their  own  risk.  Problems  caused  by  unauthorized  attempts  at  realignment  are  not covered by the warranty policy. Also, Vertex Standard reserves the right to change circuits and alignment procedures in the interest of improved performance, without notifying owners.

Under  no  circumstances  should  any  alignment  be  attempted  unless  the  normal function  and  operation  of  the  transceiver  are  clearly  understood,  the  cause  of  the malfunction  has  been  clearly  pinpointed  and  any  faulty  components  replaced,  and realignment determined to be absolutely necessary.

Required Test Equipment

The following test equipment (and familiarity with its use) is necessary for complete realignment.  Correction  of  problems  caused  by  misalignment  resulting  from  use  of improper test equipment is not covered under the warranty policy. While most steps do not  require  all  of  the  equipment  listed,  the  interactions  of  some  adjustments  may require that more complex adjustments be performed afterwards.

Do not attempt to perform only a single step unless it is clearly isolated electrically from all other steps. Have all test equipment ready before beginning and, follow all of the steps in a section in the order presented.

  • RF Signal Generator with calibrated output level at 200 MHz
  • Deviation Meter (linear detector)
  • In-line Wattmeter with 5% accuracy at 200 MHz
  • 50-Ohm 100-W RF Dummy Load
  • 8-Ohm AF Dummy Load
  • Regulated DC Power Supply adjustable from 6 to 15 VDC, 20A
  • Frequency Counter: 0.2-ppm accuracy at 200 MHz ˆ AF Signal Generator
  • AC Voltmeter
  • DC Voltmeter: high impedance ˆ VHF Sampling Coupler ˆ SINAD Meter

Alignment Preparation & Precautions

A 50-Ohm RF load and in-line wattmeter must be connected to the antenna jack in all procedures that call for transmission; alignment is not possible with an antenna. After completing one step, read the next step to see if the same test equipment is required. If not,  remove  the  test  equipment  (except  dummy  load  and  wattmeter,  if  connected) before proceeding.

Correct alignment requires that the ambient temperature be the same as that of the transceiver and test equipment, and that this temperature be held constant between 68 °F ~ 86 °F (20 °C ~ 30 °C). When the transceiver is brought into the shop from hot or cold air, it should be allowed some time to come to room temperature before alignment. Whenever  possible,  alignments  should  be  made  with  oscillator  shields  and  circuit boards firmly affixed in place. Also, the test equipment must be thoroughly warmed up before beginning.

Note: Signal levels in dB referred to in the alignment procedure are based on 0dBµ = 0.5µV.

Test Setup

Set up the test equipment as shown below for transceiver alignment.

Entering the Alignment Mode

Alignment of the FT-2900R is performed using a front panel software-based procedure.

To perform alignment of the transceiver, it must first be placed in the  “Alignment Mode,” in which the adjustments will be made and then stored into memory.

To enter the Alignment mode, press and hold in the [REV(DW)] and [D/MR(MW)] keys while turning the radio on. Once the radio is on, release these two key. The transceiver is now in the “Alignment Mode.”

PLL Reference Frequency

  • Rotate the DIAL knob to set the alignment parameter to “146.000 rF.”
  • Press the [D/MR(MW)] key to enable adjustment of the “PLL Reference Frequency.”
  • Press the PTT switch to activate the transmitter, adjust the DIAL knob so that the counter frequency reading is 146.000 MHz (±100 Hz).
  • Press the [D/MR(MW)] key.

RF Front-end Tuning

  • Inject a 145.100 MHz signal at a level of -10 dBµ (with 1 kHz modulation
  • ±3.5 kHz deviation) from the RF signal generator.
  • Rotate the DIAL knob to set the alignment parameter to “145.100 tn.”
  • Press the [D/MR(MW)] key to enable adjustment of the “RF Front-end Tuning.”
  • Adjust the DIAL knob so that the maximum SINAD.
  • Press the [D/MR(MW)] key.

Squelch Threshold Level

  • Inject a 145.100 MHz signal at a level of -14 dBµ (with 1 kHz modulation
  • ±3.5 kHz deviation) from the RF signal generator.
  • Rotate the SQL knob to the 10-o’clocl position.
  • Rotate the DIAL knob to set the alignment parameter to “145.100 tL.”
  • Press the [D/MR(MW)] key to enable adjustment of the “Squelch Threshold Level.”
  • Press the [D/MR(MW)] key three times.
  • Press the [D/MR(MW)] key.

S-meter Level (S-1)

  • Inject a 145.100 MHz signal at a level of -5 dBµ (with 1 kHz modulation
  • ±3.5 kHz deviation) from the RF signal generator.
  • Rotate the DIAL knob to set the alignment parameter to “145.100 S1.”
  • Press the [D/MR(MW)] key to enable adjustment of the “S-meter Level (S-1).”
  • Press the [D/MR(MW)] key three times.
  • Press the [D/MR(MW)] key.

S-meter Level (S-9)

  • Inject a 145.100 MHz signal at a level of +23 dBµ (with 1 kHz modulation
  • ±3.5 kHz deviation) from the RF signal generator.
  • Rotate the DIAL knob to set the alignment parameter to “145.100 S9.”
  • Press the [D/MR(MW)] key to enable adjustment of the “S-meter Level (S-9).”
  • Press the [D/MR(MW)] key three times.
  • Press the [D/MR(MW)] key.

TX Power (High)

  • Rotate the DIAL knob to set the alignment parameter to “145.000 HP.”
  • Press the [D/MR(MW)] key to enable adjustment of the “TX Power (High).”
  • Press the PTT switch to activate the transmitter, adjust the DIAL knob so that the RF Power Meter reading is 75 W (±3.0W).
  • Press the [D/MR(MW)] key.

TX Power (Low 3)

  • Rotate the DIAL knob to set the alignment parameter to “145.000 L3.”
  • Press the [D/MR(MW)] key to enable adjustment of the “TX Power (Low 3).”
  • Press the PTT switch to activate the transmitter, adjust the DIAL knob so that the RF Power Meter reading is 30 W (±1.5 W).
  • Press the [D/MR(MW)] key.

TX Power (Low 2)

  • Rotate the DIAL knob to set the alignment parameter to “145.000 L2.”
  • Press the [D/MR(MW)] key to enable adjustment of the “TX Power (Low 2).”
  • Press the PTT switch to activate the transmitter, adjust the DIAL knob so that the RF Power Meter reading is 10 W (±1.0 W).
  • Press the [D/MR(MW)] key.

TX Power (Low 1)

  • Rotate the DIAL knob to set the alignment parameter to “145.000 L1.”
  • Press the [D/MR(MW)] key to enable adjustment of the “TX Power (Low 1).”
  • Press the PTT switch to activate the transmitter, adjust the DIAL knob so that the RF Power Meter reading is 5 W (±0.5 W).
  • Press the [D/MR(MW)] key.

TX Deviation

  • Inject a 1 kHz, 50 mV signal from the Audio Generator.
  • Rotate the DIAL knob to set the alignment parameter to “145.000 dU.”
  • Press the [D/MR(MW)] key to enable adjustment of the “TX Deviation.”
  • Press the PTT switch to activate the transmitter, adjust the DIAL knob so that the Deviation Meter reading is 4.2 kHz (±0.1 kHz).
  • Press the [D/MR(MW)] key.

CTCSS TX Deviation

  • Rotate the DIAL knob to set the alignment parameter to “145.000 100.”
  • Press the [D/MR(MW)] key to enable adjustment of the “CTCSS TX Deviation.”
  • Press the PTT switch to activate the transmitter, adjust the DIAL knob so that the Deviation Meter reading is 0.6 kHz (±0.05 kHz).
  • Press the [D/MR(MW)] key.

DCS TX Deviation

  • Rotate the DIAL knob to set the alignment parameter to “145.000 dC.”
  • Press the [D/MR(MW)] key to enable adjustment of the “DCS TX Deviation.”
  • Press the PTT switch to activate the transmitter, adjust the DIAL knob so that the Deviation Meter reading is 0.8 kHz (±0.05 kHz).
  • Press the [D/MR(MW)] key.

Closing the Alignment mode

Press the [DW(REV)] key to save the new setting and exit to normal operation.

Vertex Standard Co. Ltd. IC: 511B-20393X50 Alignment

Introduction
The FT-2900R is carefully aligned at the factory for the specified performance across
the amateur band. Realignment should therefore not be necessary except in the event
of a component failure. Only an authorized Vertex Standard representative should
perform all component replacement and service, or the warranty policy may be void.
The following procedures cover the adjustments that are not normally required once
the transceiver has left the factory. However, if damage occurs and some parts
subsequently are replaced, realignment may be required. If a sudden problem occurs
during normal operation, it is likely due to component failure; realignment should not
be done until after the faulty component has been replaced.
We recommend that servicing be performed only by authorized Vertex Standard service
technicians who are experienced with the circuitry and fully equipped for repair and
alignment. If a fault is suspected, contact the dealer from whom the transceiver was
purchased for instructions regarding repair. Authorized Vertex Standard service
technicians realign all circuits and make complete performance checks to ensure
compliance with factory specifications after replacing any faulty components.
Those who do undertake any of the following alignments are cautioned to proceed at
their own risk. Problems caused by unauthorized attempts at realignment are not
covered by the warranty policy. Also, Vertex Standard reserves the right to change
circuits and alignment procedures in the interest of improved performance, without
notifying owners.
Under no circumstances should any alignment be attempted unless the normal
function and operation of the transceiver are clearly understood, the cause of the
malfunction has been clearly pinpointed and any faulty components replaced, and
realignment determined to be absolutely necessary.
Required Test Equipment
The following test equipment (and familiarity with its use) is necessary for complete
realignment. Correction of problems caused by misalignment resulting from use of
improper test equipment is not covered under the warranty policy. While most steps do
not require all of the equipment listed, the interactions of some adjustments may
require that more complex adjustments be performed afterwards.
Do not attempt to perform only a single step unless it is clearly isolated electrically
from all other steps. Have all test equipment ready before beginning and, follow all of
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