Hits
144 MHz preamplifier with BF981
Using a mosfet bf981 from philips to give more than 20 db gain with around 1 db noise figure on 2 meter
post 18 Apr 2024
Preamplifiers Links →
160 Meter preamplifier
KD9SV Products have been helping enthusiasts get the most from their Low Band receiving antenna systems for over 25 years
A 21-30 MHz low noise amplifier
Design of a preamplifier for the "deaf" HF receiver. When you need extra sensitivity for 15, 12 and 10 meter operation - for example for amateur satellites
A High-End UHF Preamp for the VHF/UHF Dongle
I decided to build a smaller preamplifier for UHF 430-440Mhz and to add a sharp filter at its output, most likely an interdigital filter
27-28 MHz Band Antenna Pre-Ampilfier
a simple & effective antenna pre-amp for 10m. Band (28-29.7 MHz). However, this circuit was mainly realised for AO-7 Satellite
54
KD9SV Products have been helping enthusiasts get the most from their Low Band receiving antenna systems for over 25 years
Design of a preamplifier for the "deaf" HF receiver. When you need extra sensitivity for 15, 12 and 10 meter operation - for example for amateur satellites
I decided to build a smaller preamplifier for UHF 430-440Mhz and to add a sharp filter at its output, most likely an interdigital filter
a simple & effective antenna pre-amp for 10m. Band (28-29.7 MHz). However, this circuit was mainly realised for AO-7 Satellite
Ferrite Shop Ferrite-shop on-line shop, cable clamps,toroids, cable cores, technic,ferrite material choice
Amateur radio kits by Kanga US
Pcs Electronics RF power amplifiers-pallets archives-ABC of FM AM DAB+ DRM radio transmitters