1200MHz TRANSVERTER & REPEATER KITS

The complete High Performance Transverter is built on a 70x95mm double sided plated through hole PCB, & uses a large number of SMD components, Mini-Circuits Mixer, Amplifiers, & Helical Filters to make the design compact & predictable in performance. The Toko helical filters allow the Transverter to be tuned to cover a 25MHz @ 1dB minimum bandwidth between 1250 & 1305MHz. The Transverter has been updated with a low noise PHEMT front end for a low noise figure & higher RX gain. The basic Transverter Kit comes complete with all onboard components & requires a EME175 500MHz local Oscillator Kit, Crystal, & the EME66 Transverter Sequencer Kit for the RX/TX switching, & interface of the transverter to a 144MHz transceiver. The Basic Transverter Kit requires miscellaneous hardware & connectors to complete. Please specify what crystal you require for the I/F frequency coverage. The Standard Crystal in stock for this kit is a 96.000000MHz Krystaly 1ppm 60deg C.

Specifications:
Frequency Range: Tunable 25MHz 1dB Bandwidth from 1250 – 1305MHz 
Receiver Gain: >24dB Gain, <1.5dB NF  Prototype
I/F: 144 – 148MHz ( 1296 – 1300MHz ) With a 96.000MHz Crystal 
I/F: 145 - 149MHz ( 1296 - 1300MHz ) 95.91667MHz Optional
I/F: 144 - 148MHz ( 1273 - 1277MHz ) 94.0833MHz Optional
I/F: 144 - 148MHz ( 1293 - 1297MHz ) 95.750MHz Optional 
TX Output Power: 1296MHz +16.5dBm @ 1dB Gain Compression
Input Power: 144MHz 0dBm maximum for +16.5dBm Output
TX Gain: 17.5dB
Power Supply: RX 110mA, TX 185mA
Board Size: 69 x 94mm

Gain & Noise Figure
Output Spurs with 0dBm Input

 

 

Please Note: SMA connectors are not included in the Basic Kit

2400MHz TRANSVERTER KIT

The complete High Performance Transverter is suitable for Satellite operation on 2401MHz, & SSB on 2403MHz. It is constructed on a professionally etched 90x65mm Teflon PC Board, & uses a number of SMD components, Mini-Circuits Mixer & Amplifiers, & a 5 Section Hairpin Filter to make the design compact & predictable in performance. The basic Transverter Kit comes complete with all onboard components, & requires miscellaneous hardware, connectors & box to complete.

The EME94 KIT1 is a Basic Kit only, & requires the option listed below to construct a complete Transverter. The options depend on whether you want it for 2.4GHz receive only, or as a complete Transverter. The recommended options are listed below.

Please Note: This Kit Cannot be modified or used on 2304MHz

Specifications: Freq Range: 2350 – 2450MHz 
Receiver: 24.5dB Gain, <2.6dB NF 
I/F: 144 – 148MHz ( 2400 – 2404MHz ) 94MHz  Standard Crystal  
I/F: 432 - 436MHz ( 2400 - 2404MHz ) 82MHz Optional Crystal
TX Output Power: > +17dBm 50mW 
Power Supply: RX +9V 80mA TX +9v 120mA

 

 

Please Note: SMA connectors are not included in the Basic Kit

EME94 KIT WEB PAGE

Gain & Noise Figure
Output Spurs with -10dBm Input

3400MHz TRANSVERTER KIT

The basic transverter kit is constructed on a EME171 Universal Microwave board, & has been specifically designed to construct a low cost 3400MHz transverter or RX converter. A pipe-cap cavity filter is used to effectively filter out image & local oscillator frequencies, allowing transverter I/F frequencies down to 144MHz to be used.

The pipe-cap filter allows the Kit it to be used on frequencies from approximately 2.7 to 4.5GHz.

The complete Kit includes professional Plated through hole PC boards, & all onboard components. The Kit requires miscellaneous hardware, ( SMA connectors, cable etc ) to complete.

The EME3400-TRV KIT is a Very Basic Kit only, & requires the options listed below to construct a complete transverter. The options depend on whether you want it for 3.4GHz receive only, or as a complete transverter.

Please Note: This Kit will not tune down to 2400MHz

Specifications:
Freq Range: Tunable 2700 – 4500MHz  ( with 7/8" pipecap & 30mm bolt supplied )
Receiver: 25.5dB Gain, <2dB NF 
I/F: 144 – 148MHz ( 3400 – 3404MHz ) 108.533333MHz  Crystal  
I/F: 432 - 450MHz ( 3400 - 3418MHz ) 98.933333MHz Crystal
TX Output Power: > -16bBm & 3400MHz @ 1dB gain compression 
Input Power: 144MHz 0dBm maximum for -16dBm Output
TX Gain: -16dB
Power Supply: RX +9V 70mA, TX 0v 0mA
Board Size: 64 x 38mm. Height including Pipe-cap <45mm

This Kit uses a number of SMD components including a very small SOT343 package device that requires some experience to successfully complete this Kit.  

Please Note: SMA connectors are not included in the Basic Kit

EME3400 SERIES KIT WEB PAGE

400 - 600MHz LOCAL OSCILLATOR KITS

This Kit is a redesign of the popular EME65 Butler Oscillator. Many hours were spend with the help from Kevin ZL1UJG, & input from others to evaluate the EME65 Kit to improve the performance, & update the design. Improvements have been made to lower the power supply & oscillator phase noise, including heat sinking & insulating requirements to suit a temperature controlled heater. Optional components can be fitted to allow for phase locking the oscillator from a GPS PLL reference. The oscillator will provide a stable +7dBm output in the 400 to 600MHz range suitable for Transverters & RX Converters from the UHF to Microwave bands.

The complete Kit includes a Plated through hole PC board, & all onboard components except crystal, connectors etc. The Kit requires a crystal, box & miscellaneous hardware to complete.

Standard & High stability Series 5th Overtone Crystals are listed on the Crystal Page of the Component Catalogue.  Divide your Output frequency by 6 for the required Crystal Frequency.

Specifications: Freq Range: 400-540MHz / 540-600MHz
Output: >+7dBm ( 5mW )
Power Supply : +10 to +15V 35mA
PC Board Size: 69 x 48mm

 

EME175 KIT WEB PAGE

AN OPTIONAL EME175 OPT3 KIT IS AVAILABLE TO ADD A VARICAP DIODE TO THE CRYSTAL OSCILLATOR CIRCUITRY FOR PHASE LOCKING.

MINI-KITS CURRENTLY DOES NOT HAVE A GPS BASED PHASE LOCKING KIT

The new PC board has provision to fit a 50deg Heater against the crystal on the board.

OSCILLATOR HEATER KIT

The EME177 Kit has been specifically designed to suit the EME175 Oscillator Kit. It could also possibly be used with the previous EME65 Kit with modification. The Heater is also suitable for stabilizing frequency drift in many other products, including Radio Transceivers & Receivers.

This Kit is suitable for portable Battery operation, & can be set for a temperature between +30 @ +75 degrees C.

The complete Kit includes a Plated through hole PC board, & all onboard components.

Specifications:
Set Point Temperature: Adjustable +30 to +75 degrees C ( with supplied components )
Warm Up Time: mounted to an EME175 Oscillator using a TS07S 50 degree C crystal in an insulated box, within 100Hz @ 576MHz in 10 minutes. Within 10 Hz & 576MHz in 1 Hour. Please Note that this test was made under controlled conditions.
Turn On Power: 50 degrees C, < 300mA ( 25 degrees C Ambient Temperature )
Steady State Power: 50 degrees C, 60mA ( 25 degrees C Ambient Temperature )
Power Supply: Requires a Regulated +8 volt < 300mA ( Uses EME175 +8 volt Regulator )
PC Board Size: 34 x 19mm

 

EME177 KIT WEB PAGE

The top side of the board above, shows the temperature adjustment trimpot & heater transistor.

1850 - 2256MHz OSCILLATOR MULTIPLIER KIT

The Multiplier is suitable for use as an ATV multiplier to 2.4GHz, or with use with the EME175 local oscillator Kit for transverter or receive converters. The multiplier can be used as either a 2X, 3X, or 4X multiplier for output within the 1850 to 2256MHz bandwidth of its 1/2 wave band pass filters.  The Multiplier uses 2 x ERA Amplifiers to produce up to +8dBm output.

The 1/2 Wave Tuned filter design requires no tuning & guarantees a clean local oscillator output with no test equipment required.

The single filter board & Spur output is acceptable for most local oscillator applications for use with transverters & Receive Converters. For increased filtering for transmitter use the EME139 KIT3 which includes an extra PCB as a second filter, & connect the two boards together back to back.

The complete Kit includes the PC board, all onboard components, & 9 volt regulator. The Kit requires miscellaneous hardware, Tinplate strip, & SMA connectors to complete. 

Specifications:

Freq Range: 1960 – 2360MHz +/-3dB
Input: 4x 490 to 590MHz +3 dBm
Alternative Input: 2 x 980 to 1180MHz, 3x 653 to 787MHz +3dBm
Output: +3 to +8dBm Depends on Input frequency
Power supply: +11-15volts 75mA
PC Board Size: 86 x 39mm

Frequency Response & Bandwidth
Output Spurs with +3dBm Input

Connectors are not supplied with the basic Kit

Construction Pictures EME139 KIT3

3400MHz MULTIPLIER KIT

The complete multiplier is constructed on a EME171 Universal Microwave board, & has been specifically designed as a local oscillator multiplier for 3400MHz transverters, RX converters, or as a multiplier for ATV. A pipe-cap cavity filter is used to effectively filter out harmonics & oscillator noise allowing Transverter I/F frequencies down to 144MHz to be used.

The pipe-cap filter allows the Kit it to be used on frequencies from approximately 2.7 to 4.5GHz.

The complete Kit includes professional Plated through hole PC boards, & all onboard components. The Kit requires miscellaneous hardware, ( SMA connectors, cable etc ) to complete.

Specifications:

Output Freq Range: 2700 – 4500MHz ( with 7/8" pipe cap & 30mm bolt supplied )
Input: 540 to 900MHz x5
Alternative Input: 900 to 1500MHz x3
Output: +8 to +14dBm Depends on Input frequency & drive level
Power supply: +9volts 110mA ( optional 9 volt regulator )
PC Board Size:Board Size: 64 x 38mm. Height including Pipe-cap <45mm

 

EME3400 SERIES KIT WEB PAGE

The top side of the board above, shows the pipe-cap filter

5800MHz MULTIPLIER KIT

The complete multiplier is constructed on a EME171 Universal Microwave board, & has been specifically designed as a local oscillator multiplier for 5760MHz transverters, RX converters, or as a multiplier for ATV. A pipe-cap cavity filter is used to effectively filter out harmonics & oscillator noise allowing Transverter I/F frequencies down to 144MHz to be used.

The pipe-cap filter allows the Kit it to be used on frequencies from approximately 3.7 to 6GHz.

The complete Kit includes professional Plated through hole PC boards, & all onboard components. The Kit requires miscellaneous hardware, ( SMA connectors, cable etc ) to complete.

Specifications:

Output Freq Range: 3700 – 6000MHz ( with 3/4" pipe cap & 20mm bolt supplied )
Input: 9x 410 to 670MHz, 10x 370 to 600MHz 0 dBm
Alternative Input: 5 x 1160MHz 0dBm ( For 5.8GHz ATV TX )
Output: +7 to +10dBm Depends on Input frequency & drive level
Power supply: +9volts 110mA ( optional 9 volt regulator )
PC Board Size: 2 x EME171 boards, ( Each board 64 x 38mm )

 

EME5800 SERIES KIT WEB PAGE

The top side of the board above, shows the pipe-cap filter

10GHz MULTIPLIER KIT

The complete multiplier is constructed on a EME171 Universal Microwave board, & has been specifically designed as a local oscillator multiplier for 10GHz transverters, RX converters, or as a multiplier for ATV. A Pipe-cap cavity filter is used to effectively filter out harmonics & oscillator noise allowing Transverter I/F frequencies down to 144MHz to be used.

The pipe-cap filter allows the Kit it to be used on frequencies from approximately 8 to 12GHz.

The complete Kit includes professional Plated through hole PC boards, & all onboard components. The Kit requires miscellaneous hardware, ( SMA connectors, cable etc ) to complete.

Specifications:

Output Freq 8000 – 12000MHz ( with 1/2" pipecap & 16mm bolt supplied )
Input: 2x 4000 to 6000MHz 0dBm
Output: +10 to +13dBm Depends on Input frequency & drive level
Power supply: +9volts 110mA ( optional 9 volt regulator )
PC Board Size: EME171 64 x 38mm

Use the EME5800-LO KIT1 with the EME10G-LO KIT for a complete 10GHz LO Multiplier solution. 

EME171 KIT WEB PAGE

The top side of the board above, shows the pipe-cap filter

TRANSVERTER SEQUENCER KIT

The EME66 Sequencer is one of the most popular Kits that we have ever sold. It has been designed to fully control a Transverter & various other components like, antenna relays, power amplifiers, & preamplifiers etc. The Sequencer has 3 delayed TX output switching voltages, & a single RX output switched voltage. The Sequencer has the option of either RF or voltage RX to TX switching from a 28-430MHz Transceiver, & can handle up to 3W max input. TX output power from the sequencer can be adjusted down to 0dBm ( 1mW ), with 3Watts input for driving a Transverters mixer direct. The receive I/F signal path has an adjustable trimpot attenuator to set the maximum gain required for the receive conversion & transceiver used. Requires box & miscellaneous hardware to complete. 

Specifications: 

I/F TX Input:   28MHz - 144MHz Up to 3Watts Maximum Input
TX/RX Delay:   200mS  10uF Capacitor / 10kohm Resistor
Switched Inputs:    (PTT) +12v to TX ( FT290R ),  0v to TX ( IC202 )
RF Sensed RX/TX Switching
Switched Outputs:  Delay1, RX +12v, TX 0v  ( RX Power supply )
Delay2, RX 0v, TX +12 to 28v  ( Coaxial Antenna Relay )
Delay3, RX 0v, TX +12 to 28v  ( Power supply to TX Power Amplifier )
Delay4, RX 0v, TX +12v ( TX Stages Power supply )
Power supply:   Voltage required +8 to 15v  DC
Current, RX mode 40mA,  TX mode 70mA ( Includes Relay )

EME66 KIT WEB PAGE

 

Complete EME66 Transverter Sequencer Kit

Refer to the 23cm Transverter BLOCK DIAGRAM to see how it is used.

137MHz WEATHER SATELLITE KIT

The Receiver has been designed essentially for those that want to experiment with 137MHz Receiver design.  The Receiver is suitable for reception of the NOAA & Meteor APT Satellites on the 135 to 141MHz band.  The receiver is designed around the Motorola MC13135P double conversion superhet receiver IC.  The receiver uses a preamplifier for increased sensitivity & a band pass filter to effectively reject overload from pagers on 150MHz. The receiver has manual tuning & Automatic Frequency Control for frequency stability, & to track the doppler shift of the Satellite.  A squelch & S meter circuit are incorporated in the design.  The circuit board has been designed for easy connection of an PLL Synthesizer for tuning, & a wideband FM IF demodulator for WEFAX reception on 1691MHz with an external Down converter 

The basic EME117 KIT includes the PC Board, all onboard components, & requires miscellaneous hardware, box, Speaker, & connectors etc to complete. 

Requires a PC with Sound blaster or similar sound card. 

For Free Software & Weather Satellite Links Click Here

With retuning, this Receiver is also suitable for reception of the 150MHz Narrow Cast FM services in Australia.

Specifications: 
Freq Range: 135-141MHz 
Input Sensitivity: 0.25uV for 12dB SINAD   ( -120dBm )
I/F: 1st 10.7MHz 230Khz BW, 2nd IF 455Khz 30Khz BW @ 6dB 
Frequency Tuning:  Varicap tuned VCO with AFC
Audio Output:  Speaker up to 500mW 8 to 32 ohms. 
PC audio output:   Filtered Low Pass for connection to a 
computers sound card. 
PC Board Size: 96 x 80mm

 

 

Basic EME117 Kit. Connectors are not supplied with the basic Kit

THIS PICTURE WAS RECEIVED FROM NOAA 17 ON 10/1/03. Some picture quality has been  lost to compress this JPG.

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