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Technical Reference
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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 ...
Votes: 3 | Rating: 6.67
144 MHz Antenna Pre-Ampilfier
Electronic circuit and components layout fot this VHF Preamp
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 ...
Votes: 28 | Rating: 5.82
144 MHz Very Low Noise Preamplifier
An home made low noise preamplifier project for 144 MHz with detailed circuit diagram The ...
By HA8ET - Votes: 2 | Rating: 10
144Mhz preamplifier
A preamplifier project based on Rainer DJ9BV project, in french
Votes: 2 | Rating: 7.5
2 Meter GaAs FET Preamp
KD9JQ 2 meter GaAsFET preamplifier by KD9JQ
Votes: 5 | Rating: 6
23 cm GaAs FET preamplifier
On 23cm the best way to obtain a good RX sensitivity is to use a ...
Votes: 6 | Rating: 4.67
23cm Low Noise Amplifier
A low noise amplifier for the 23cm band with schematic diagram picutes and instructions article ...
By PA4DAN
2m and 70cm Preamp
Here are some hints and tips for construction of a good preamp for satellite work ...
By ON7EQ
432MHz Low Noise Preamp
An easy to build with a cheap HEMT FET Transistor Low noise preamplifier with FHX35LG ...
By DF9CY - Votes: 1 | Rating: 10
435 plus 1296MHz ATF54143 Pre-amplifier
The prototype for this amplifier was originally designed for 70cm and was used on the ...
By G0MRF
50-70 MHz preamplifier
A ham radio home made preamplifier for 50 MHz and 70 MHz bands
By pa3fxo - Votes: 1 | Rating: 1
6m Preamp
A dead easy 50 mhz preamp by VK3CJS
Votes: 1 | Rating: 8
A JFET preamplifer for 50 MHz
The circuit is simple designed with a low component count and an inherent simplicity in ...
By AA8C
Amateur Radio - Microphone Preamp
Low signal, noise-high AC gain preamplifier
Amplifiers and Vacuum Tubes Tuning Loading and Arcing
Page on amplification topics From vacuum tubes to various components discussion on stability and arcin ...
Votes: 2 | Rating: 4.5
Antenna pre-amplifier for 10 m
A simple & effective antenna pre-amp for 10m. Band (28-29.7 MHz)
Votes: 1 | Rating: 9
Attenuators and Preamps
How to get the most from attenuators and preamps
Votes: 3 | Rating: 3
Audio Preamp
Easy circuit that provide good gain to weak audio signals
Votes: 2 | Rating: 3.5
Designing Op Amp Audio PreAmplifiers
Design guidelines for Op Amp audio preamplifier circuits by Mike Martell N1HFX
Votes: 4 | Rating: 3.25
DL5DBM`s 2 meter Antenna preamp
Homebrew with CF300 DGMF with about .24 dBD gain
Votes: 5 | Rating: 7.6
GaAs FER Pre Amp Cookbook
There are many designs for building preamps each with their own advantages and disvantages In ...
By WA5VJB
General purpose RF Wideband PreAmp
General purpose RF Wideband PreAmp based on BSX 20 transistor with a frequency range 14 ...
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 ...
LF/MF Preamplifier
A universal LF/MF preamplifier by Lyle Koehler, K0LR
Votes: 2 | Rating: 4.5
Low Power LF Amplifier
ON6MU Low Power amplifier
Votes: 1 | Rating: 8
Mic Pre Ampllifier
A microphone preamplifier schematic for hand-helds by ON6MU
Votes: 3 | Rating: 6
Mic Preamplifier
Mic Preamp, schematic by Anthony Gargasz, KB8WOW
Mizuho products
Mizuho Tsushin Co was a small Japanese manufacturer of QRP radios and kits shortwave receiver ...
Votes: 1 | Rating: 10
PHEMT (GaAs FET) Preamplifiers
Angle Linear has been producing GaAs FET preamplifiers since 1980
Votes: 3 | Rating: 8
Radio Preamplifier for 2 mtr reciever
20db gain 144 Mhz preamplifier by Harry Popov LZ1BB
Simple Cheap MMIC Preamps
Who needs a GaAsFET? Tuning, constructions and Packaging by Paul Wade
By W1GHZ
The 50MHz Assistant
Preamp & Power Amp By Alkberto, I0XGR
Votes: 1 | Rating: 10
Transistor Audio Preamplifier Circuits
Design Guidelines for Bipolar Transistor Audio Preamplifier Circuits By Mike Martell N1HFX
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 ...
Votes: 1 | Rating: 1
U301 FET preamplifier
This FET preamplifier has been around for almost 25 years It is extremely reliable and ...
Votes: 3 | Rating: 6.33
U310 FET preamplifier
Extremely reliable FET preamplifier can handle several watts directly into either the input or the ...
Votes: 2 | Rating: 9
UHF Low Noise Antenna pre-amp
Low Noise Antenna pre-amp for SAT, EME & DX-ing
Votes: 2 | Rating: 2
VHF UHF Low noise Amplifiers
2m 70cm 23cm Low noise Amplifiers 3 Low noise amplifiers Outdoor unit with DB6NT parts ...
By VE2EK - Votes: 2 | Rating: 5
VHF UHF preamp
ON6MU project for a vhf uhf preamplifier
Votes: 23 | Rating: 4.47
W7IUV HF Preamplifier
Schematic and pictures of a W7IUV preamplifier
Votes: 2 | Rating: 1
W7IUV Low Band Preamp
Pre amplifier using a 2N5109 for the 160 meters band
By W7IUV - Votes: 7 | Rating: 6.43
Wideband PreAmp's for HF/VHF/UHF
Wideband VHF/UHF/SHF monolithic PreAmp based on MARx-series by ON6MU
Votes: 4 | Rating: 8.75
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