Due to the wide variation of tuning components for different frequencies, You should not purchase this product unless you have the design knowledge and test equipment including a spectrum analyzer to make it work.

The Mini-Kits EME175-R3 is an updated design that uses a Butler oscillator with 5th overtone crystals which can be used to cover frequencies between 400 to 640MHz.  The design is a modern redesign of the popular butler oscillator design of the early 1990's, and has a number of design changes to improve the oscillator phase noise performance.  The oscillator will provide a stable +7dBm output, and is suitable for Transverters and RX Converters from the UHF to Microwave bands.  The Oscillator has the option to add components so that it can be voltage controlled for phase locking from a stable GSP locked PLL source like the G4JNT reverse DDS.  An optional EME177 Oscillator heater can be added when using high turnover point crystals for better stability.

THIS KIT IS FOR VERY ADVANCED CONSTRUCTORS ONLY AS IT IS VERY DIFFICULT TO BUILD AND TUNE. BUILT PRODUCTS ARE NO LONGER AVAILABLE

Standard and High stability Series 5th Overtone Crystals are listed in the Crystal section of the website.  Divide your Output frequency by 6 for the required Crystal Frequency.

This Product is to be discontinued due to obsolete components and being replaced by PLL products.

EME175-R3-KIT is a Basic Kit for 400 to 640MHz that includes the PC board, Instructions, all on board components, and header connectors.  Requires complete construction and soldering of SMD components.

EME177 KIT is an optional heater Kit that can be used with crystals like our 60 degree C types. 

Kits Do Not include connectors, crystal, miscellaneous hardware, or an enclosure.  For experienced constructors Only that have access to test equipment including a spectrum analyzer and alignment tools.

Specifications
Frequency Range:
400 to 640MHz
Output Power:
+7dBm ( 5mW ) minimum ( Typically +9dBm )
Crystal Recommended:
AT Cut 5th Overtone 1ppm 20pF load C 60deg C
Spurious: At least -40dBc
Operating Voltage: +10 to 15vdc ( +12vdc @ 35mA Recommended )
Board Size: 67mm L x 48mm W x 20mm H

For more information see the EME175-R3 KIT WEBPAGE

Application Block Diagram

400 to 640MHz Low Phase Noise Butler Oscillator

  • Brand: Mini-Kits
  • Product Code: EME175-R3 KIT
  • Quantity In Stock: 1
  • $59.95

  • Export: $54.50

  • Discount Pricing

  • 10 pcs or more $53.96

Available Options

Accessories

Enter desired quantity before clicking Add to Cart button

SMA37 PCB Mount Narrow 1.6mm

SMA37 PCB Mount Narrow 1.6mm

$3.30 Export: $3.00

EME177-R2 Temperature Controlled Crystal Heater

EME177-R2 Temperature Controlled Crystal Heater

$29.90 Export: $27.18

  • Total:

  • Export Total:

Related Products

5800MHz Frequency Multiplier

5800MHz Frequency Multiplier

Priced from

$33.95 Export: $30.86

EME177-R2 Temperature Controlled Crystal Heater

EME177-R2 Temperature Controlled Crystal Heater

Priced from

$29.90 Export: $27.18

94MHz Crystal HC-49/U 1ppm 60deg C

94MHz Crystal HC-49/U 1ppm 60deg C

Priced from

$33.00 Export: $30.00

95.916670MHz Crystal HC-49/U 5ppm 50deg C

95.916670MHz Crystal HC-49/U 5ppm 50deg C

Priced from

$33.00 Export: $30.00

95.750000MHz Crystal HC-49/U 1ppm 60deg C

95.750000MHz Crystal HC-49/U 1ppm 60deg C

Priced from

$33.00 Export: $30.00

96MHz Crystal 1ppm 60degC 20pF

96MHz Crystal 1ppm 60degC 20pF

Priced from

$33.00 Export: $30.00

98.933333MHz Crystal HC-49/U 1ppm 60deg C

98.933333MHz Crystal HC-49/U 1ppm 60deg C

Priced from

$33.00 Export: $30.00

98.666666MHz Crystal HC-49/U 1ppm 60deg C

98.666666MHz Crystal HC-49/U 1ppm 60deg C

Priced from

$33.00 Export: $30.00

66.666667MHz Crystal HC-49/U 1ppm 60deg C

66.666667MHz Crystal HC-49/U 1ppm 60deg C

Priced from

$33.00 Export: $30.00

61.833333MHz 5th Overtone Crystal

61.833333MHz 5th Overtone Crystal

Priced from

$22.00 Export: $20.00

101.000000MHz Crystal HC-49/U 1ppm 25deg C

101.000000MHz Crystal HC-49/U 1ppm 25deg C

Priced from

$33.00 Export: $30.00

103.500000MHz Crystal HC-49/U 1ppm 60deg C

103.500000MHz Crystal HC-49/U 1ppm 60deg C

Priced from

$33.00 Export: $30.00

104.000000MHz Crystal HC-49/U 1ppm 60deg C

104.000000MHz Crystal HC-49/U 1ppm 60deg C

Priced from

$33.00 Export: $30.00

106.500000MHz Crystal HC-49/U 1ppm 60deg C

106.500000MHz Crystal HC-49/U 1ppm 60deg C

Priced from

$33.00 Export: $30.00

120MHz Crystal HC-49/U 1ppm 60deg C

120MHz Crystal HC-49/U 1ppm 60deg C

Priced from

$33.00 Export: $30.00

90.841667MHz Crystal 1ppm 60degC

90.841667MHz Crystal 1ppm 60degC

Priced from

$33.00 Export: $30.00

90.666666MHz Crystal 1ppm 60degC

90.666666MHz Crystal 1ppm 60degC

Priced from

$33.00 Export: $30.00

36.048000MHz Crystal HC-49/U 1ppm 25deg C

36.048000MHz Crystal HC-49/U 1ppm 25deg C

Priced from

$33.00 Export: $30.00

12cm Band 2.4 to 2.5GHz Transverter Es'Hail 2 Uplink

12cm Band 2.4 to 2.5GHz Transverter Es'Hail 2 Uplink

Priced from

$119.95 Export: $109.05

23cm 1.24 to 1.3GHz Transverter Rev2

23cm 1.24 to 1.3GHz Transverter Rev2

Priced from

$119.95 Export: $109.05

109.333333MHz Crystal HC-49/U 1ppm 60deg C

109.333333MHz Crystal HC-49/U 1ppm 60deg C

Priced from

$33.00 Export: $30.00

123.666666MHz 5th Overtone Crystal

123.666666MHz 5th Overtone Crystal

Priced from

$33.00 Export: $30.00