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Technical Reference
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Most Popular
144 MHz preamplifier with BF981
Design of a preamplifier for 144 MHz with 1 dB NF and 23 dB gain using BF981. This amplifier is using a low cost silicon MOSFET (BF981 from Philips) to give more than 20 dB gain with around 1 dB noise figure on 2 meter.
VHF UHF preamp
ON6MU project for a vhf uhf preamplifier
U301 FET preamplifier
This FET preamplifier has been around for almost 25 years. It is extremely reliable and can handle several watts directly into either the input or the output without failure.
2 Meter GaAs FET Preamp
KD9JQ 2 meter GaAsFET preamplifier by KD9JQ
6m Preamp
A dead easy 50 mhz preamp by VK3CJS
23 cm GaAs FET preamplifier
On 23cm the best way to obtain a good RX-sensitivity is to use a GaAs-FET in the front-end, since these devices show very low noise figures.
Audio Preamp
Easy circuit that provide good gain to weak audio signals
144Mhz preamplifier
A preamplifier project based on Rainer DJ9BV project, in french
144 MHz Antenna Pre-Ampilfier
Electronic circuit and components layout fot this VHF Preamp
Preamp Links
137 kHz antenna preamplifier
A simple 137 kHz antenna preamplifier to make your FT 817 and others useable on ...
[ Hits: 1185 | Votes: 3 | Rating: 6.67 ]
144 MHz Antenna Pre-Ampilfier
Electronic circuit and components layout fot this VHF Preamp
[ Hits: 3273 | Votes: 5 | Rating: 6.4 ]
144 MHz preamplifier with BF981
Design of a preamplifier for 144 MHz with 1 dB NF and 23 dB gain ...
[ Hits: 17965 | Votes: 28 | Rating: 5.82 ]
144 MHz Very Low Noise Preamplifier - HA8ET
An home made low noise preamplifier project for 144 MHz with detailed circuit diagram The ...
[ Hits: 429 | Votes: 2 | Rating: 10 ]
144Mhz preamplifier
A preamplifier project based on Rainer DJ9BV project, in french
[ Hits: 3457 | Votes: 2 | Rating: 7.5 ]
2 Meter GaAs FET Preamp
KD9JQ 2 meter GaAsFET preamplifier by KD9JQ
[ Hits: 5880 | Votes: 5 | Rating: 6 ]
23 cm GaAs FET preamplifier
On 23cm the best way to obtain a good RX sensitivity is to use a ...
[ Hits: 4052 | Votes: 6 | Rating: 4.67 ]
23cm Low Noise Amplifier - PA4DAN
A low noise amplifier for the 23cm band with schematic diagram picutes and instructions article ...
[ Hits: 66 | Votes: 0 | Rating: 0 ]
2m and 70cm Preamp - ON7EQ
Here are some hints and tips for construction of a good preamp for satellite work ...
[ Hits: 103 | Votes: 0 | Rating: 0 ]
432MHz Low Noise Preamp - DF9CY
An easy to build with a cheap HEMT FET Transistor Low noise preamplifier with FHX35LG ...
[ Hits: 766 | Votes: 1 | Rating: 10 ]
435 plus 1296MHz ATF54143 Pre-amplifier - G0MRF
The prototype for this amplifier was originally designed for 70cm and was used on the ...
[ Hits: 337 | Votes: 0 | Rating: 0 ]
50-70 MHz preamplifier - pa3fxo
A ham radio home made preamplifier for 50 MHz and 70 MHz bands
[ Hits: 157 | Votes: 1 | Rating: 1 ]
6m Preamp
A dead easy 50 mhz preamp by VK3CJS
[ Hits: 5528 | Votes: 1 | Rating: 8 ]
A JFET preamplifer for 50 MHz - AA8C
The circuit is simple designed with a low component count and an inherent simplicity in ...
[ Hits: 99 | Votes: 0 | Rating: 0 ]
Amateur Radio - Microphone Preamp
Low signal, noise-high AC gain preamplifier
[ Hits: 1011 | Votes: 0 | Rating: 0 ]
Amplifiers and Vacuum Tubes Tuning Loading and Arcing
Page on amplification topics From vacuum tubes to various components discussion on stability and arcin ...
[ Hits: 2760 | Votes: 2 | Rating: 4.5 ]
Antenna pre-amplifier for 10 m
A simple & effective antenna pre-amp for 10m. Band (28-29.7 MHz)
[ Hits: 1806 | Votes: 1 | Rating: 9 ]
Attenuators and Preamps
How to get the most from attenuators and preamps
[ Hits: 2224 | Votes: 3 | Rating: 3 ]
Audio Preamp
Easy circuit that provide good gain to weak audio signals
[ Hits: 3822 | Votes: 2 | Rating: 3.5 ]
Designing Op Amp Audio PreAmplifiers
Design guidelines for Op Amp audio preamplifier circuits by Mike Martell N1HFX
[ Hits: 1645 | Votes: 4 | Rating: 3.25 ]
DL5DBM`s 2 meter Antenna preamp
Homebrew with CF300 DGMF with about .24 dBD gain
[ Hits: 3211 | Votes: 5 | Rating: 7.6 ]
GaAs FER Pre Amp Cookbook - WA5VJB
There are many designs for building preamps each with their own advantages and disvantages In ...
[ Hits: 702 | Votes: 0 | Rating: 0 ]
General purpose RF Wideband PreAmp
General purpose RF Wideband PreAmp based on BSX 20 transistor with a frequency range 14 ...
[ Hits: 2406 | Votes: 2 | Rating: 5.5 ]
Improving Receiver Noise on 50 MHz
Tests on a preamplifier for 50 MHz installed right at the feedpoint of the antenna ...
[ Hits: 990 | Votes: 0 | Rating: 0 ]
LF/MF Preamplifier
A universal LF/MF preamplifier by Lyle Koehler, K0LR
[ Hits: 2166 | Votes: 2 | Rating: 4.5 ]
Low Power LF Amplifier
ON6MU Low Power amplifier
[ Hits: 857 | Votes: 1 | Rating: 8 ]
Mic Pre Ampllifier
A microphone preamplifier schematic for hand-helds by ON6MU
[ Hits: 1673 | Votes: 3 | Rating: 6 ]
Mic Preamplifier
Mic Preamp, schematic by Anthony Gargasz, KB8WOW
[ Hits: 575 | Votes: 0 | Rating: 0 ]
Mizuho products
Mizuho Tsushin Co was a small Japanese manufacturer of QRP radios and kits shortwave receiver ...
[ Hits: 3241 | Votes: 1 | Rating: 10 ]
PHEMT (GaAs FET) Preamplifiers
Angle Linear has been producing GaAs FET preamplifiers since 1980
[ Hits: 2199 | Votes: 3 | Rating: 8 ]
Radio Preamplifier for 2 mtr reciever
20db gain 144 Mhz preamplifier by Harry Popov LZ1BB
[ Hits: 1992 | Votes: 0 | Rating: 0 ]
Simple Cheap MMIC Preamps - W1GHZ
Who needs a GaAsFET? Tuning, constructions and Packaging by Paul Wade
[ Hits: 688 | Votes: 0 | Rating: 0 ]
The 50MHz Assistant
Preamp & Power Amp By Alkberto, I0XGR
[ Hits: 2532 | Votes: 1 | Rating: 10 ]
Transistor Audio Preamplifier Circuits
Design Guidelines for Bipolar Transistor Audio Preamplifier Circuits By Mike Martell N1HFX
[ Hits: 1817 | Votes: 3 | Rating: 4.33 ]
Tri-Mode Buffer Amplifier Box
The TMB 1 is an RF amplifier unit receiving accessory that can be used with ...
[ Hits: 965 | Votes: 1 | Rating: 1 ]
U301 FET preamplifier
This FET preamplifier has been around for almost 25 years It is extremely reliable and ...
[ Hits: 8427 | Votes: 3 | Rating: 6.33 ]
U310 FET preamplifier
Extremely reliable FET preamplifier can handle several watts directly into either the input or the ...
[ Hits: 1052 | Votes: 2 | Rating: 9 ]
UHF Low Noise Antenna pre-amp
Low Noise Antenna pre-amp for SAT, EME & DX-ing
[ Hits: 2330 | Votes: 2 | Rating: 2 ]
VHF UHF Low noise Amplifiers - VE2EK
2m 70cm 23cm Low noise Amplifiers 3 Low noise amplifiers Outdoor unit with DB6NT parts ...
[ Hits: 130 | Votes: 2 | Rating: 5 ]
VHF UHF preamp
ON6MU project for a vhf uhf preamplifier
[ Hits: 14098 | Votes: 23 | Rating: 4.47 ]
W7IUV HF Preamplifier
Schematic and pictures of a W7IUV preamplifier
[ Hits: 3072 | Votes: 2 | Rating: 1 ]
W7IUV Low Band Preamp - W7IUV
Pre amplifier using a 2N5109 for the 160 meters band
[ Hits: 2555 | Votes: 7 | Rating: 6.43 ]
Wideband PreAmp's for HF/VHF/UHF
Wideband VHF/UHF/SHF monolithic PreAmp based on MARx-series by ON6MU
[ Hits: 3210 | Votes: 4 | Rating: 8.75 ]
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