Fanling DX Land - OL72CM - Home of VR2XMQ

Ham Radio, that's what it's all about!


VHF, UHF, SHF

      

I have always had a fascination for VHF, UHF and SHF and these parts of the frequency spectrum shall always have a special place in in my heart. Indeed when I started amateur radio it was on 50Mhz and 144Mhz primarily back in the early eighties as class B licence holders were not allowed any usage whatsoever of the HF bands, but all this changed when the amateur radio community worldwide decided that change was necessary as to limit usage of HF because of not taking Morse code was not a true measure of an operators knowledge, after all CW is just a mode of operation!.

I got involved with the abolition of Morse code through joining No-Code International as the National Chapter Chairman for Hong Kong in the 2000's and then commenced my lengthy lobbying of complete abolition of code and the release of the bands for all radio amateur radios in the territory, well enough be said, all is history and needless to say we won!

Today my connections with OFTA via the various liaison meeting continue and I continue to strive for radio amateurs rights locally for more frequency allocations on 430Mhz, 1.2Ghz and 2.4Ghz which have been kept from us unfairly for far too long!

So this page will be about VHF, UHF and SHF matters that will be of interest to me.

27th July, 2007 - 1200 MHz Headway!  A meeting was held with OFTA on Friday afternoon 27th July, 2007 and they presented their findings on calculations for minimum distance needed to be away from the airport in order that 1.2 GHz operation be viable for the amateur radio community here in Hong Kong. To cut a long story short everything to the south of the Lion Rock on Kowloon side would be included into an exclusion zone and no 1.2 GHz operation would be permitted. To the north of the Lion Rock permission would be granted on a case by case basis at first by the issuance of a 6 month trial permit, more information to come once this is set in writing and agreed between the Civil Aviation Department (CAD) and OFTA, yes folks we will finally have 1.2GHz operation. Fanling - OL72CM is well north of the Lion Rock and therefore we will be QRV eventually!

 
view also: http://vr2xmq-stevesblog.blogspot.com/        
 
 
VHF Aurora : Status
144 MHz Es in EU : Status
144 MHz Es in NA : Status
From The DXrobot
 

Now on with the good stuff:-

My Preamplifiers:

1. 50MHz-VLNA GaAs FET preamplifier:

GaAs Fet: ATF-10736 specified 0.5-12GHz, 0.9dB noise @ 2GHz w/16 dB gain.
Info.: http://literature.agilent.com/litweb/pdf/5965-8698E.pdf
Package: u-X package

6M preamp spec:
Frequency:      50-54 MHz (4 MHz)
NF:             < 0.7 dB
Gain:           16 dB
P1dB:           +19dBm output
Input VSWR:     >6dB @ design frequency
Output VSWR:    >10dB DC - 3 GHz

Components: All SMD, trimmers-piston microwave types.

 

2. 50MHz-LNA GaAs FET preamplifier:

Dual Gate MosFET: BF-960 good up to VHF (144MHz) - 1.5dB noise, upto 25 dB gain

6M preamp spec:
Frequency:      50-54 MHz ( 4MHz)
NF:             = 1 dB
Gain:           Adjustable to 18 dB
RF Sense:       100 watts (relays)

Do you notice something about the gain VR knob? Its made out of a solid piece of rosewood!

 

3. 50MHz VLNA GaAs MES FET preamplifier:

3SK121 N-Channel GaAs MES FET UHF RF, NF: 1.5 dB @ 800 MHz

6M preamp spec:
Frequency:      50-54 MHz (4 MHZ)
NF:             Better then 0.67 dB
Gain:           Adjusted to 12 dB
P1dBm:          +18dBm output
RF Sense:       100 watts (relays)


4. 144MHz Daiwa modified GaAs FET preamplifier with 3SK129 (Photo below):

Frequency:      144-148MHz

NF:                    <0.6dB



5.  
Datong HF-50MHz Preamplifier 8dB Gain:




Conversion of the Drake 2.4 GHz TVRO Converter for use as AO-40 Satellite Down Converter:

Step by step instruction by my friend VR2ZXP can be found at the following link:

http://www.qsl.net/vr2zxp/project/24down/24down.htm

FT-817 Multi-mode Portable Transceiver HF/6M/2M/70cm

The world’s first self-contained, battery-powered, Multi-mode Portable Transceiver covering the HF, VHF, and UHF bands!

For more than four decades, Yaesu has been a world leader in the design and manufacture of high-performance multi-mode base station and mobile transceivers, as well as FM handhelds.Yaesu broke new ground with the introduction of the FT-817: the world’s first HF/VHF/UHF self-contained battery-powered Multi-mode Portable Transceiver. Providing up to five watts of power output, the FT-817 is designed for operation on the 160-10 meter HF bands, plus the 6 meter, 2 meter, and 70 cm bands. Whether your preferred operating mode is SSB, CW, AM, FM, Packet, or SSB-based Digital modes like PSK31, the FT-817 is ready to join you on your next hiking, camping, or search-and-rescue adventure!

Now the 817 legacy is even better with the introduction of the FT-817ND.

Despite its incredibly small size (5.3" x 1.5" x 6.5"), the FT-817 delivers big performance! Its next-generagion PA puts out five watts on all HF bands, plus the 50 MHz, 144 MHz, and 430 MHz bands, on all popular operating modes: USB/LSB/CW/AM/FM/Packet/PSK-31/RTTY.

Covered are shortwave and FM broadcasts, public safety communications, and the airband thanks to the extended frequency coverage of the FT-817, which includes reception on 100 kHz - 56 MHz, 76 - 108 MHz (W-FM only), 108 - 154 MHz, and 420 - 470 MHz. 

• IF Shift – For reduction of adjacent-frequency interference. • IF Noise Blanker – For reduction of ignition and other impulse-type noise. • IPO (Intercept Point Optimization) – Bypasses RX Preamp on HF/50 MHz for improved performance during strong-signal conditions. • ATT (Front End Attenuator) – For more pleasant reception of very strong signals.

The front panel includes a convenient BNC connector for attachment of a whip or VHF/UHF rubber flex antenna (supplied). The rear panel includes a type “M” (“SO-239”) connector. As shipped from the factory, the BNC jack is active on 50/144/430 MHz, while the “M” connector is active on HF. But using the Menu, you can assign, for example, 50 and 144 MHz to the rear panel, if your coaxial cables have matching plugs.

A wealth of information is available on the front panel LCD: • When you have to be away from the radio for a few minutes, but would like a visual indication of activity while you’re away, activate the Spectrum Scope Monitor. The Spectrum Scope Monitor allows you to watch activity ±5 channels from the current operating frequency. • The LCD illumination color may be set to either Blue or Amber color, using the Menu. • Watch for low battery trouble using the Battery Voltage Meter display selection. • For ease of viewing while outdoors, you can double the size of the frequency display

An optional filter slot is provided in the FT-817, allowing the owner to install one of two available Collinsź Mechanical Filters. For CW operation, choose the 7-pole YF-122C (500 Hz bandwidth), or for very natural-sounding SSB select the 10-pole YF-122S (2.3 kHz bandwidth).

The FT-817 is the only rig in its class with internal battery operation capability. Shipped from the factory with a battery tray for 8 "AA" batteries, the FT-817 may also be operated from the optional FNB-72 Ni-Cd battery pack. full power output is available under battery power. Other manufacturers make you carry around a heavy external power source. . .but the FT-817 is entorely self-contained, making it ideal for backpacking or search-and-rescue work.

Specs:

Type: Amateur HF/VHF/UHF transceiver
Frequency range: TX: 10-160 m + WARC/ 50-54 / 144-146 / 430-440 MHz (Europe)
TX: 10-160 m + WARC and 60 m / 50-54 / 144-148 / 440-450 MHz (USA)
RX: 0.1-56 / 76-154 / 420-470 MHz
Mode: AM/FM/WFM/SSB/CW/RTTY/PSK31
RF Power output: 5 W (SSB/CW/FM) and 1.5 W (AM) with 13.8 V external DC
2.5 W (SSB/CW/FM) and 0.7 W (AM) with 9.6 V internal DC
Sensitivity: N/A
Selectivity: N/A
Image rejection: N/A
Voltage: 8*Li-Ion / R6/AA or 13.8 VDC external
Current drain: RX: Max ? mA
TX: Max ? A
Impedance: 50 ohms, BNC on front or SO-239 on back
Dimensions (W*H*D): ? mm
Weight: ? Kg
Manufactured: 2004-200x
Other: CTCSS/DCS. Spectrum scope. Alpha tags. 9K6 packet ready. This is
an updated FT-817 with 60 m coverage and higher capacity battery pack

Simple Upgrade:

Do your self a favor if you have a Yaesu FT-817ND, check out the replacement cranker knob made by

Wayne K8FF of Finger Dimple. This is a beautifully made custom aluminum annodized spinner knob

which makes the operation of the radio so much smoother and it only takes 5 minutes to replace!

You might also like to check out Wayne's Finger Dimples while your at it,

here is the URL : http://www.FingerDimple.com

See photo of the Cranker Knob ~

FT-690/790 RII Portable Transceivers.

Frequency Coverage FT-690RII: 50~54 MHz Rx, 50~54 MHz Tx FT-790RII: 430~450 MHz Rx,

430~450 MHz Tx 10 Memory Channels. Multi-Mode Operation, (USB, LSB, CW & FM).

Detachable RF Deck for Portable Opertation.Power Levels; FT-690RII: 10 watts FT-790RII: 25 watts

DTMF Microphone Included (MH-15C8). Mobile Mounting Bracket, DC Power Cord, houlder strap,

and rubber duck included.

Kenwood TS-790 VHF/UHF/SHF Base Station

 

The Specifications:

TS-790 All Mode T120 A1A,J3E,F3E

144MHz

430MH

*1200MHz


1.2GHz UT-10

Module

10W
10W
*10W
144MFM57713~1
430MFM57716~1
*1200MFM57762~1
13.8V
13.8V
13.8V

 

The background:

Do I need an introduction to this fantastic base station. Just read the rave reviews on eham.net and you will see

why this is the V/U/SHF base station to have in your shack be it for satellite work or weak signal work.

My TS-790 (Mint Condition):

The best way to describe the Kenwood TS-790 is a combination of three high-performance all-mode transceivers rolled into one! 2 meters and 70 cm are built-in and with the addition of the optional UT-10 module, adding 1200 MHz; you have the ultimate in a VHF / UHF communications. Modes of operation include USB, LSB, CW and FM. Power on 144 MHz is 10 watts on FM or 10 watts on SSB. Power on 430 MHz is 10 watts FM / 10 watts SSB. The TS-790 is the ideal radio for the serious satellite, moonbounce or grid square DX operator. Uplink and downlink communications can be shifted simultaneously to compensate for the Doppler shift. There are dual digital VFOs, dual recivers for each band. Other enhancements include: Keypad entry, 59 memories, dual frequency display, RIT, IF Shift and Speech Processor. Requires 12 VDC at 15 amps. With hand mic. 13 x 4.72 x 13 inches 20.3 Lbs. (330x120x330 mm 9.2 kg).

Features
  • All Mode
  • Dual Display
  • 59 Memories
  • RIT
  • IF Shift
  • Speech Processor
  • RF Power Control
  • Memory Shift
  • Full Duplex Cross-band
  • Dual Digital VFO's
  • Dual Watch
  • Scanning
  • Keypad Entry
  • Priority Alert
  • CW Filter
  • Repeater Reverse
  • Memory Scroll
  • Optional 1200 MHz

Azden PCS-2400 50MHz FM Transceiver.

 

Frequency range: 6 m 50MHz
Mode: FM
RF Power output: Hi: 25 W
Lo: 5 W
Sensitivity: N/A
Selectivity: N/A
Image rejection: N/A
Voltage: 13.8 VDC
Current drain: RX: Max ? mA
TX: Max 2 A
Impedance: 50 ohms, SO-239
Dimensions (W*H*D): ? mm
Weight: 1 Kg
Manufactured: 1980s

National Panasonic RJX-601 50MHz AM/FM Transceiver.

Below: Extract for the Japanese Catalogue

AM/FM 50-54MHz 3 Watts.

 Inside the RJX-601

My rig is the one and only one in VR2.

Kenwood TS-60 All Mode 50MHz Transceiver.

I have had my TS-60 for some time now, this was aquired on my behalf by Hatsuo Yoshida, JA1VOK

in Japan and sent out to me as it was not available in Hong Kong, so the radio has been with me for one

solar cycle already.  I had the INRAD SSB filter fitted which made a world of difference to SSB

operation. Despite its compact size, the Kenwood TS-60 6 meter multi-mode transceiver has full-sized

features and power. Output is adjustable in 3 steps to 25 watts. Naturally it supports LSB, USB,

CW AM and FM. Dual VFO's, 100 memories, AIP, RIT, IF shift, AGC and TF-set round out the

features. Supplied with: mobile mounting bracket, power cord and MC-47 multifunction hand mic.

Only 7 1/16 x 3 3/8 x 9 3/16 inches (6.4 lbs.).

Features
  • Dual VFO's
  • 100 Memories
  • Scanning
  • TF-Set
  • CW Reverse
  • AGC (Slow/Fast)
  • Kenwood AIP
  • RIT
  • 25 Watts
  • Menu Programming
  • 50-54 MHz
  • DDS with "Fuzzy" logic
  • Full or Semi Break-in
  • All Mode Squelch
  • IF Shift
  • 12VDC operation

 

 

TELETEC DXP-L180 Linear Amplifier

15W IN - 180W OUT


 

This is a great little 6M linear and I have been running it for already one solar cycle and now into the second,

It provides true clean linear output not like some claimed by other manufacturers. These amps are the only

ones that use active bias circuits. I consistently receive unsolicited reports about the quality of my signal when

using this amp.


SPECIFICATIONS/FEATURES:

  • FREQUENCY RANGE ......................... 50-54Mhz (6 Meter)
  • POWER RATING (INPUT/OUTPUT) ............. 15W/180W
  • CURRENT @ FULL POWER (13.8 VDC) ......... 28 AMPS
  • MODE OF OPERATION ....................... FM, SSB, CW, AM (LINEAR AMP)
  • T/R SWITCHING ........................... AUTOMATIC, RF SENSED/MANUAL
  • RF IMPEDANCE (INPUT/OUTPUT) ............. 50 OHMS/50 OHMS
  • PROTECTION .............................. OVER/REVERSE VOLTAGE, OVER-TEMPERATURE, VSWR
  • MODE OF SWITCHING ....................... AUTOMATIC/MANUAL
  • RECEIVE PREAMPLIFIER .................... JFET, 8dB GAIN
  • RF CONNECTORS ........................... SO-239
  • POWER CONNECTION ........................ 3 FT. 10AWG PIGTAIL
  • DIMENSIONS .............................. 11"D X 7 3/4"W X 2"H NOMINAL
  • WEIGHT .................................. 8 LBS

Ranger RCI-5054dx 50MHz Transceiver.

RCI-5054DX Specifications

 General

 

 Frequency Range

50.000 - 54.000 MHz

 Tuning Steps

1 MHz, 100 KHz, 10 KHz, 1 KHz, 100 Hz

 Emission

USB, LSB, CW, AM, FM

 Frequency Tolerance

0.005%

 Frequency Control

Microprocessor / Phase-Locked-Loop Synthesizer

 Frequency Stability

0.001%

 Operating Temperature Range

-10 șC to + 50 șC

 Meter Function

 RF Output, RX Signal Strength, Modulation, SWR
(LCD Display Indicates Relative Values)

 Antenna Impedance

50 Ohm

 Input Voltage

13.8 Vdc

 Microphone

400 Ohm Dynamic PTT - 6 Pin

 Size (W x D x H)

5054DX: 7 3/4" x 9 3/4" x 2-3/8"

 Weight

5054DX: 5 lb 13 oz

   

 Transmitter

 RF Power Output

5054DX: 12.5 Watts RMS: CW / AM / FM 
25 Watts: SSB (PEP)

 Current Draw at full power

RCI-5054DX: 3.8 Amps

 Modes

USB, LSB, CW, AM, FM, PA

 CW Keying

Semi break-in

 Carrier Suppression

- 50 dB

 Spurious Emission

- 60 dB

 Antenna Connector

UHF Type, 50 Ohms

   

 Receiver

 Sensitivity

AM / CW: 0.5 ”V for 10 db SINAD
FM: 0.25 ”V for 12 db SINAD
SSB: 0.15 ”V for 10 db SINAD

 AGC Figure of Merit

SSB/CW/AM: 80dB at 50mV for a 10dB change in audio output

 Selectivity

- 55db

 Image Rejection Ratio

- 65 db

 Audio Output Power

2.5 Watts @ 10% THD into 8 W

 

The Ranger RCI-5054dx is a not that well known in DX circles, but it is indeed a very good performer

on the 6 meter band this is an OEM radio made for Ranger in Taiwan.

Features:

-50 to 54 MHz Coverage               -Easy to read clear blue backlight

-Improved RX design                 -Dimmer for large frequency display

-Selectable ouput power                                   -Frequency scanning

- +/- 2.5KHz clarifier                       -Ten programmable frequencies 

-Noise blanker and ANL                      -Frequency selector lockout

-Programmable Repeater Offset                                    - PA facility

 


This DX model is patterned after the popular 10 & 12 meter RCI-2970DX. It features a microprocessor control, and is rated at 25W PEP SSB and 12.5W AM/FM/CW. 

This 6 meter mobile radio has retained the popular operating features of its predecessors, including programmable repeater offset (allowing splits of up to 2 Mhz, with Tx high or low) and capabilities for a CTCSS tone option — great for increasing repeater activity on 6 meters — plus receiver scanning for quick search of active frequencies. This unit offers three methods of frequency selection, non-volatile memory to store and scan up to ten favorite frequencies, and front panel frequency selector lockout.

The RCI-5054DX-100 offers an impressive array of design and performance improvements:

—  An enhanced receiver: designed for increased sensitivity and image rejections.

—  A double FET balanced mixer: for excellent receiver intermodulation rejection.

—  Power supply protection: and temperature compensation for superb stability and reliability over wide temperature ranges.

—  Surface mount components: for greater resistance to shock and vibration.

—  Refined display lighting: for easy reading in a wide range of light conditions.

TE Systems 0552G Amplifier


The TE System 0552G 50MHz HPA is 3" high, 11" wide and 10" deep. 6m (about 375W out at max input drive of 25 watts)..

My unit was purchased through Burghardt Amateur Radio Center through the help of Dr. Martin Bayes, AA1ON.

Model       Type       Freq.:       Input:     Out:        VDC      ICS                                      Dimensions:

0552G    HPA   50-54    20-25  375    13.8   54      .7/15UHF     75Ś250Ś275

My version is an upgraded version with the option cooling fan kit installed.


        
Front Panel    
         1. Amplifier IN/OUT Switch                                5. "Hard Key" (PTT Switched) Indicator
         2. Green when Amp is IN                                  6. FM, no delay; CW/SSB, delay adjustable     
         3. Red when Amp is "In Use"                            7. Green when Preamp is IN    
         4. Red color - temperature exceeds +65 C         8. Preamp IN/OUT Switch       



        

Back Panel

The knob at the center sets transmit relay delay (maximum of 4 seconds) when the amplifier is the CW/SSB mode. The seven "pin" "Remote Accessory" (ACC.) socket allows control of amplifier function from a remote location. TE Systems amplifiers are factory wired for internal RF sensing operation. This can be bypassed by using the ACC. socket connections. The RF INPUT/OUTPUT connectors are SO-239 (UHF).

 

 


 The accessory socket wiring as follows:

1.  FM/SSB external control - with
front panel switch in CW-SSB position, ground for FM, open for CW-SSB.

2.  Direct keying (PTT) - ground for PA amplification.


3.  +12.5VDC (1A max) - off the 13.8VDC PA pwr input thru a diode.

4.
 no connection


5.  Remote control operation - when ungrounded, PA cannot be activated (cut internal ground to enable this).

6.  Ground connection


7.
 LED illumination control - when ungrounded, front LED lights are inoperative, except for "RF" LED (cut internal ground to enable this).

 

TE SYSTEMS       
P.O. Box 25845, Los Angeles, California 90025

Note: TE Systems have no web site.      

Yaesu FT-6200 Duo-Bander UHF/SHF

Type:

Amateur UHF transceiver
Frequency range: 430-440 / 1260-1300 MHz
Mode: FM
RF Power output: Hi: 35/10 W
Lo: 5/1 W
Sensitivity: N/A
Selectivity: N/A
Image rejection: N/A
Voltage: 13.8 VDC
Current drain: RX: Max 0.6 A
TX: Max 9 A
Impedance: 50 ohms, N
Dimensions (W*H*D): 140*40*155 mm
Weight: 1.0 Kg
Manufacturer: Yaesu Musen ~ Japan
Other: Twin RX

 

Yaesu FT-221R with Mutek Front End.

The Yaesu FT-221R is a 2 meter multi-mode transceiver that operates in SSB, CW, FM and AM modes.

Power output is:  SSB 12 watts PEP, CW 14 watts, FM 14 watts and AM 2.5 watts. Frequency coverage

is 144 to 148 MHz in eight 500 kHz ranges. It has a built-in 100 kHz crystal calibrator, noise blanker, speaker

and three way analog meter (S Meter/Power Out/FM Discriminator). The design styling is exactly the same as

the FT-301D which is an HF transceiver. My FT-221R has had it's front end board entirely replaced with the

high performance Mutek Front End Board for high performance weak signal work on SSB.

Features
  • 12 Watts Output
  • Solid State
  • External Tone Input Jack
  • 11 Fixed Crystal Sockets
  • S/PO/FM Meter
  • Noise Blanker
  • FM/SSB/CW/AM Modes
  • 117 VAC or 13.5 VDC
  • Calibrator 100 kHz.
  • Built-in Speaker
  • Semi-break in
  • VOX

 

Daiwa LA-2065R 144MHz All Mode Linear Amplifier.

Type: All-mode linear amplifier
Frequency range: 144-148 MHz
Voltage: 13.8 VDC
Current drain: Max 8 A
Drive power: 1-14 W
Maximum output power: 60 W
Dimensions (WxHxD): 122x45x175 mm
GaAs Fet Preamp:
Other: Built-in 15 dB preamp

Ten Tec 2510B Satellite Station

Uniden Bearcat UBC-9000XLT Scanning Receiver 25 - 1300 MHz

Specifications
Coverage: 25-550 & 760-1300MHz (gap on UHF-tv)
Channels & Banks: 500 Channels in 20 banks. (25 ch per bank)
Scan and search-speed: 100 ch/steps per sek (300 steps/sek with 5khz-steps)
Modes: AM, NFM and WFM
Steps: 5 12,5 25 50 khz-steps
Priority-channels: 10, one in each 10 first banks, can only have one per bank.
Sensitivity: 25-512 ~ .4”V
118-136, 225-399 ~ 1.0”V
406-1300 ~ 0.6”V
Selectivity: -6dB/-50dB AM/NFM 12KHz/25KHz
IFstages: 380.7/254.4, 58.075, 0.455 MHz
Power supply: 13.8v (included) about 0.7A
Connectors: Antenna (BNC), Audio, Earphone output and tape-control (RCA).
The tape-control can control a cassette-deck that has this feature.
You can select channels on the scanner to record.
Autostore and Autosort: AutoSort automatically sorts the frequencies within all banks
for faster searching, AutoStore stores the frequencies found
automatically in selected bank(s).
The last one is a great idea that don't work to well duh
on most bands duh to all none-conversation frequencies it stores.
Please note that autostore dont care about if the freq is locked out ;(
You better fix this in the next version uniden!!!
Data Skip: Skip's channels with has none-speach contents
This don't work very well by personal experiences.
Please note that it waits for 3 secs before it goes on.
VFO Control: Use the VFO-control (the flywheel) to easily change Frequencies and channels.
The VFO can be LOCKED as well.
Attenuator: Eliminates intermodulation from nearby frequencies etc.
All channels can have it on or off independent.
And it SURE is needed on some spots ;)
Delay: When on the scanner waits for 2sec for a reply.
Can be setted independent for all channels.
See the tricks-area on how to increase it to 4 secs
Lockout: All channels can be locked out independent.
Locked out channels are (OF COURSE) not scanned.
50 Frequencies can be locked out when searching.
When 50 has been reached it starts to overwrite the 1th and so on
No possibility is present to view and change the freqs
other then scrolling thought with the VFO and pres L/O.
Alpha-tagging: A alpha-tag can be assigned to the first 250 channels.
What it simply means is that you can assign a "name" to the channels
So it reads "local police ch32" insteed of just 79,5125 etc.
LCD: The LCD is of Dot Matrix type with backlite in high, dim and off-modes.
I find it VERY bright and easy to read, a control for contrast would be nice duh.
Audio Output: 3 Watts @ 8 ohm - ~10% Distortion. Internal speaker is GOOD and gives a LOUD sound.
Size, weight etc: 10"(W) x 4"(H) x 8"(D) or 25cm (W) x 10cm (H) x 20cm (D)
Optional stuff: CTCSS Tone, External Speaker Ext. Warranty, Earphone,
Mobile antenna, DA301 Antenna AS300 Ant, WideBand PreAmp, amplifed Speaker.

 

Chinese Made 1.2GHz Yagi

Photo below is my 1.2 GHz Yagi that is made in China, not yet installed:-

The specification of 1.2G Yagi antenna is:

Freq: 1200 ±100MHz
Band width: 83MHz
Gain: 13dBi
SWR: <=1.5
R: 50 Ohm
E Plane Half-power beam width: 36 degree
H Plane Half-power beam width: 32 degree
Input Power: 100W

 

Comet Discone Antenna DS-15 25MHz to 1500MHz

(Installed on 13/04/2008)

 

Specs.:

RX Frequency: 25 to 1.5GHz

TX Frequency: 50, 145, 435, 900 & 1200MHz

Gain: 5.12dBi

TX Power: 100 Watts

VSWR: less than 1.5:1

 

ICOM IC-910H V/U/SHF Tribander

          

Above is a photo of my ICOM IC-910H set to cover 144MHz and 430MHz.

100W of stable output power

A powerful 100W* of output power is provided by the newly designed power amplifier circuit,

which employs bipolar transistors in parallel. The combination of the aluminum die-cast chassis

and effective cooling fan ensures stable output for continuous operation.


* 75W on 430MHz band and 10W on 1200MHz band

High performance receiver

The IC-910H offers 0.11”V of high sensitivity (at 10db S/N on SSB, CW mode), while the image

and spurious responses are minimized for good signal fidelity. Used with the optional preamplifiers

for each band, indispensable for obtaining weak signals in DX or satellite communication

Installed UX-910 - 1200MHz BAND UNIT

By installing the optional UX-910 1200MHZ BAND UNIT, the IC-910H becomes an

all mode tri-band transceiver. You can also enjoy cross band and full duplex operation.

Measuring only 241(W)Ś94(H)Ś 239(D) mm, and weighting 4.5kg (without UX-910)*.

 

9600bps packet operation

The IC-910H has two data sockets for simultaneous two band packet communications.

Setting of the packet communication can be made easily in the set mode.

Optional down converter, AG-2400

The optional AG-2400 converts a 2.4GHz satellite downlink signal to a 144MHz signal.

Coupled with the satellite mode of the IC-910H, the US mode and LS (UX-910 required)

mode satellite operation ready for use.

And more

All receiver functions, including IF shift, sweep, noise blanker, RF attenuator, also

work in the SUB band

The sweep function observes conditions around the set frequency

4 types of scanning are activated on each band independently

The memory pad stores the operating frequencies and modes temporarily

Electronic keyer with a dot/dash ratio control is built-in

FM-narrow mode receivable (except 1200MHz band)

50 CTCSS tone encoder/decoder and one touch repeater function

Optional UT-106 DSP UNIT available

CI-V capability for PC control

 

Specs:

General

Frequency coverage

(USA version)

144MHz Tx 144.0-148.0MHz
  Rx 136.0-174.0MHz
430MHz Tx 420.0-450.0MHz
  Rx 420.0-480.0MHz
1200MHz Tx 1240.0-1300.0MHz
  Rx 1240.0-1320.0MHz
Mode

SSB, CW, FM, FM-N

(FM-N is not available on 1200 MHz band)

Frequency stability ±3 ppm (-10°C to +60°C)
Frequency resolution 1 Hz
Number of memory channels 328 (99 regular, 1 call, 6 scan edges for each band plus 10 satellite memories)
Operating temperature range -10°C to +60°C; +14°F to +140°F
Power supply requirement 13.8 V DC ±15% (negative ground)

Current drain (at 13.8 V DC)

Tx High 23.0A (8.0A at 1200MHz*1)
  Low  7.0A (4.5A at 1200MHz band*1)
 Rx Max Audio 2.5A (3.5A at 1200MHz band*1)
  Stand-By 2.0A (3.0A at 1200MHz band*1)
Dimensions

241(W) X 94(H) X 239(D) mm

91/2(W) X 311/16(H) X 913/32(D) in.

Weight (approx.) 4.5 kg; 10 lb

Antenna connector

  VHF

  UHF

 

SO-239 (50Ω)

Type-N (50Ω)

 

 

Output power (cont. adj.)

144 Mhz

440 MHz

1200 MHz*1

 Transmitter:

5.0-100 W

5.0-75 W

1.0-10 W 

Modulation system

SSB

FM

 

Balanced modulation

Variable reactance modulation

Spurious emission

144, 440 MHz

1200 MHz*1

 

Less than -60 dB

Less than -50 dB 

Carrier suppression More than 40 dB
Unwanted sideband More than 40 dB
Microphone connector 8-pin connector (600Ω)

 

Receiver system

VHF


UHF

 

SSB, CW

FM

SSB, CW

FM

Single conversion superheterodyne

Double conversion superheterodyne

Double conversion superheterodyne

Triple conversion superheterodyne

Intermediate frequencies :

 Mode  MAIN band SUB band
1st 2st 3st 1st 2st 3st
144MHz band SSB 10.8500 - - 10.9500 - -
CW 10.8491 - - 10.9491 - -
FM 10.8500 0.4550 - 10.9500 0.4550 -
430MHz band SSB 71.2500 10.8500 - 71.3500 10.9500 -
CW 71.2491 10.8491 - 71.3491 10.9491 -
FM 71.2500 10.8500 0.4550 71.3500 10.9500 0.4550
 1200MHz band*1 SSB 243.8500 10.8500 - 243.9500 10.9500 -
CW 243.8491 10.8491 - 243.9491 10.9491 -
FM 243.8500 10.8500 0.4550 243.9500 10.9500 0.4550
Sensitivity
SSB, CW
FM

 

0.11 ”V (at 10 dB S/N)

0.18 ”V (at 12 dB SINAD)

Squelch sensitivity

  SSB, CW

  FM

 

1.00 ”V (at threshold)

0.18 ”V (at threshold)

Selectivity

SSB, CW

 

FM

 

FM-N*2

 

More than 2.8 kHz/-6dB;

Less than 4.2 kHz/-60 dB

More than 15.0 kHz/-6dB;

Less than 30 kHz/-60 dB

More than 6.0 kHz/-6dB; 

Less than 18 kHz/-60 dB

Spurious rejection ratio more than 60 dB (Except 1200MHz band*1)

Audio output power

(at 13.8 V DC)

More than 2.0 W at 10% distortion with an 8 ohm load

RIT variable range

SSB, CW

FM

 

1.0 kHz (2.0kHz at 1200MHz band*1)

5.0 kHz (10.0kHz at 1200MHz band*1)

External speaker connector

2-conductor 3.5 mm (1/8″) 8Ω connector Ś 2

(for main and sub bands)

*1 An optional UX-910, 1200MHz BAND UNIT, is required for 1200MHz operation.

Below, main band switched over to the UX-910 enabling 1200 MHz transceiver operation:

Below is the rear view with the UX-910 module installed:

 

V/U Antenna Tuners

1. Daiwa CNW-919 2 Meter Antenna Tuner 200 Watts

2.   LAR 2M OMNI-MATCH (High Power - 700 watts):

 

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