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
400 to 640MHz Low Phase Noise Butler Oscillator
- Brand: Mini-Kits
- Product Code: EME175-R3 KIT
- Quantity In Stock: 1
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$59.95
- Export: $54.50
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Discount Pricing
- 10 pcs or more $53.96
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Accessories
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SMA37 PCB Mount Narrow 1.6mm
$3.30 Export: $3.00
PTC Clip On HC-49 Crystal Heater 60 degrees C
$7.90 Export: $7.18
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