 14,068 MHz receiver by LY3LP
http://sa555.blogspot.com/2011/06/14068-mhz-receiver.html
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14,069 Mhz RX IF 9 Mhz by LY3LP
http://sa555.blogspot.com/2010/01/14069-mhz-rx-if-9-mhz.html |
20m QRP RX 10,7 IF by LY3LP
http://sa555.blogspot.com/2009/12/20m-qrp-rx-107-if.html |
Direct conversion receiver for 20m CW by OH1TV
I had earlier designed QRPp transmitter "Minimal 1", which delivers 1W output on 14.060MHz and works fine.
I wanted to make a pair for it, a receiver in the same spirit.
To keep it simple, direct conversion concept was chosen.
https://oh1tv.fi/DC-RX%2020m.htm |
Eenvoudige ontvanger voor 40 en 20 m met ongewoon afstemmechanisme door PA2OHH
Geert Paulides PA7ZEE had weer eens iets leuk bedacht, een zelfbouwwedstrijd van een kortegolfontvanger!!!
Het leek me een leuke gelegenheid om eens te experimenteren met een directe conversie ontvanger met de vrij onbekende RA3AAE mixer.
http://www.qsl.net/pa2ohh/07swrx1nl.htm |
Jaçanã - 20m CW Superhet Receiver by PY2OHH
A receiver for the 20m band, simple, cheap and with easily available parts in the national (brazilian) market, even by mail order.
It is a superheterodyne type, which is really necessary from this frequency upwards.
https://www.qsl.net/py2ohh/trx/jacana/Jacana.htm |
LM386+AN7205 simple 14Mhz receiver by LY3LP
http://sa555.blogspot.com/2010/03/lm386an7205-simple-14mhz-receiver.html |
Recepteur a Reaction 20m de F5LVG
Une détectrice à réaction est un récepteur simple relativement sensible du fait de la réaction. Ce procédé consiste à réinjecter à l'entrée d'un amplificateur une partie du signal de sortie qui est alors réamplifiée, ..
http://oernst.f5lvg.free.fr/rx/14mhz/rx1v1_14mhz.htm |
suDDSon Receiver by AI4SV
My longish term goal is to build the LBS transceiver described by N6QW and KK6FUT (who I see is now AI6YR) and I am methodically working my way through that project.
http://blog.templaro.com/suddson-receiver/ |
VLF Projekten
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