This low cost Receive Only 70cm 430MHz Pre-amplifier has been designed to be easy to construct and can be center frequency tuned for use between 400 and 500MHz, and is suitable for the 420 to 450MHz amateur band. This Pre-amplifier has the option of being powered via the coaxial cable, and is very suitable for retrofitting inside older transceivers to improve the weak signal gain. A low cost BF998 MesFET has been used as it has very good characteristics on the VHF to UHF bands. The BF988 was specifically designed for television tuners and has a low <1dB NF @ 800MHz, along with high cross modulation performance.

The Product image shows a fully constructed EME173-70CM KIT product without connectors.  Please refer to the Options Tab for the descriptions of the various products available.

Please Note: We no longer have the time to construct this Kit and offer it as a built product.

EME173-70CM KIT is a Basic Kit that includes the PC board, Instructions, and all on board components.  No connectors or enclosure are included. Requires Complete construction.

EME173-70CM PCB Only includes the PC board and Kit construction notes. No on board Components are included.

EME173 Enclosure Kits includes all the hardware to mount a EME173-70CM KIT into 1590A / AFL enclosure.

Basic Kits Do Not include connectors, miscellaneous hardware, or enclosure. The 2.1mm DC cable is optional and not supplied with Products. Ideal for beginner to average constructor.

Please Note: We no longer have the time to construct this Kit and offer it as a built product.

Tuneable Frequency Range:
400 to 500MHz maximum
Gain: Typically +18dB +/-1dB @ 435MHz
3dB Bandwidth: >60MHz
Noise Figure:
1.5dB ( Typically < 1.15dB @ 435MHz )
Operating Voltage: +10 to 15vdc ( +12vdc @ 10mA Recommended )
Board Size: 71mm L x 32mm W x 15mm H ( without connectors or enclosure )

For more information see the EME173-Rev2 KIT WEBPAGE

70cm UHF 420-450MHz Receive Only Preamplifier

  • Brand: Mini-Kits
  • Product Code: EME173-70CM KIT
  • Quantity In stock: 10
  • $24.95

Available Options


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EME173 1590A Enclosure Kit
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