Hambrew Links

Close 136 kHz Projects

Close 492 kHz Projects

Close 500 kHz Projects

Close Multiband HF Projects

Close 160m Projects

Close 80m Projects

Close 60m Projects

Close 40m Projects

Close 30m Projects

Close 20m Projects

Close 17m Projects

Close 15m Projects

Close 12m Projects

Close 10m Projects

Close 6m Projects

Close 4m Projects

Close VHF Airband

Close 2m Projects

Close 70cm Projects

Close 23cm Projects

Close 13cm Projects

Close 9cm Projects

Close 3cm Projects

Close 1,25cm Projects

Close EHF Projects

Close Antenna Matches

Close Shack Accessories

Close Power Supplies

Close Test Equipment

Close µController Arduino

Junk Box Circuits

Close Tubes

Close Transistors BC-Serie

Close Transistors BD-Serie

Close Transistors BF-Serie

Close IC 74XX-Serie

Close IC 74LSXX-Serie

Close IC 74SXX-Serie

Close IC LM-Serie

Close IC TDA-Serie

HF Propagation
Visits

   visitors

   visitors online

Rate this Site

The DXZone.com

(with 10 = top)

Search




2m Projects - Pre-Amplifiers

Click to enlarge144MHz Preamplifier by HS8JYX
This preamplifier can be used with existing 2 metre equipment, or ahead of the 144MHz converter described later. TR1 is the 40602 or 40673 (Dual-gate VHF amp.and mixer.).
http://fet-project.blogspot.com/2010/05/144mhz-preamplifier.html

Click to enlarge2m & 70cm PREAMPS for Satellite work (ON6UG design) by ON7EQ
The PREAMP is of wideband design. Please note that for certain applications, a narrow band design would be more desirable. Be sure that the preamp is not overloaded by nearby FM broadcast or utility VHF-signals etc.
https://www.qsl.net/on7eq/projects/on6ug_preamp.htm

Click to enlarge2m Band VHF Antenna Pre-Ampilfier by SV1BSX
I have an old VHF transceiver a little-bit "deaf"! By adding the following VHF pre-amp as 1st stage, the improving of sensitivity is spectacular. The pre-amp including also a Band-Pass input filter which rejects any undesirable signal outside of 2 m. Band.
http://www.qsl.net/sv1bsx/vhfpre/vhf-pre.html

Click to enlargePré-Amp door PE1KQP
Deze Pre-Amp is een eenvoudig zelfbouwprojectje. Het is een universele voorversterker met de BFR 90 of 91 die voor enkele euro s te bouwen is. De gain is ongeveer 20 DB en het ruisgetal is beter dan 1,5 DB.
http://pe1kqp.radiotreffen.nl/index.php?page=preamp


Creation date : 06/09/2018 @ 20:56
Last update : 30/09/2018 @ 19:29
Category : 2m Projects
Page read 218 times


Print the article Print the article

Google Ads


^ Top ^