pre amplifier
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Antennas : 40M : 40 meter Loop Antennas- Receiving antenna for low bands
- K9AY loop antenna installed at PA6Z Contest group. This is a receiving antennas for the low bands (160m, 80m and 40m). Include schematics and info on a building the control box, preamplifier and low-pass filter
[ Hits: 19587 | Votes: 11 | Rating: 8.45 ]
- HiZ-Antennas
- High impedance amplifiers for shortened vertical antennas, Array matched and Optimized 15dB Preamplifier
[ Hits: 857 | Votes: 2 | Rating: 6 ]
- LNA Technology
- LNA Technology High Performance Low Noise Preamplifiers for Amateur Radio, VHF-UHF weak signal, DX, EME, and commercial applications.
[ Hits: 2193 | Votes: 4 | Rating: 7 ]
- HI-Z Antennas
- HF receiving systems and components, band pass filters, array controllers, HI-Z pre amplifiers
[ Hits: 719 | Votes: 0 | Rating: 0 ]
- Cross Country Wireless SDR Receiver
- SDR Receiver a compact high performance HF software defined radio receiver designed to be used in fixed or portable stations.
Version 2 of the receiver is now available. It now has an RF pre-amplifier using a power MOSFET and other revisions to improve it's performance both as a stand alone receiver and as an IF panadaptor with HF and VHF transceivers.
[ Hits: 3037 | Votes: 64 | Rating: 8.41 ]
- The Nearly Perfect Amplifier
- Original manuscript for what became "The Nearly Perfect Amplifier", discussion of some design features that would be present in a perfect, or near-perfect, amplifier.
[ Hits: 1188 | Votes: 1 | Rating: 1 ]
- 40m linear amlifier made by 9A6A
- Pictures of a monoband linear amplifier for 40m band - 2 x QB5/1750 made by 9A6A
[ Hits: 808 | Votes: 1 | Rating: 10 ]
- 160m linear amplifier - pictures
- Pictures of a homemade monoband linear amplifier for 160m band powered by 3 x QB5/1750
[ Hits: 526 | Votes: 2 | Rating: 2 ]
- Desgin Power amplifiers with Genesys
- Article on how use Genesys sowftware to design RF power amplifiers
[ Hits: 1130 | Votes: 4 | Rating: 6 ]
- Transistor Audio Preamplifier Circuits
- Design Guidelines for Bipolar Transistor Audio Preamplifier Circuits By Mike Martell N1HFX
[ Hits: 1814 | Votes: 3 | Rating: 4.33 ]
- Mic Pre Ampllifier
- A microphone preamplifier schematic for hand-helds by ON6MU
[ Hits: 1669 | Votes: 3 | Rating: 6 ]
- SV1BSX Homebrew Corner
- Offer a wide range of homebrewing projects mainly for VHF UHF operations. From vhf antennas to preamplifiers, chargers and power supplies
[ Hits: 1509 | Votes: 9 | Rating: 9.78 ]
- 2 Meter GaAs FET Preamp
- KD9JQ 2 meter GaAsFET preamplifier by KD9JQ
[ Hits: 5873 | Votes: 5 | Rating: 6 ]
- Designing Op Amp Audio PreAmplifiers
- Design guidelines for Op Amp audio preamplifier circuits by Mike Martell N1HFX
[ Hits: 1640 | Votes: 4 | Rating: 3.25 ]
- W7IUV Low Band Preamp
- Pre amplifier using a 2N5109 for the 160 meters band
[ Hits: 2547 | Votes: 7 | Rating: 6.43 ]
- Radio Preamplifier for 2 mtr reciever
- 20db gain 144 Mhz preamplifier by Harry Popov LZ1BB
[ Hits: 1990 | Votes: 0 | Rating: 0 ]
- LF/MF Preamplifier
- A universal LF/MF preamplifier by Lyle Koehler, K0LR
[ Hits: 2163 | 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: 1803 | Votes: 1 | Rating: 9 ]
- 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 ]
- 137 kHz antenna preamplifier
- A simple 137 kHz antenna preamplifier to make your FT-817 (and others) useable on 2200m band.
[ Hits: 1183 | Votes: 3 | Rating: 6.67 ]
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