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80m Projects - Receivers

Klik voor vergroting40m or 80m Regen RX by G3XBM
The regen receiver is an amazing piece of electronics.
With the circuit shown the receiver can pull in SSB/CW stations well from all over Europe on 40m (or 80m) with ease.
https://sites.google.com/site/g3xbmqrp3/hf/regen

Click to enlarge80 meter vossenjacht ontvanger door PE7M
In dit artikel beschrijven wij de 80-meter vossenjachtontvanger zoals wij die hebben gebouwd op de VRZA radiokampweek 1999.
http://www.pi4rcg.nl/zelfbouw/80-meter-vossenjacht-ontvanger/

Click to enlarge80 metre direct conversion receiver by VK1PK
http://home.alphalink.com.au/~parkerp/projects/proj80dir.htm
 
 

Click to enlarge80 Metre Receiver by EI9GQ
This 80M receiver design includes the necessary switching to allow the SSB filter and first I.F. amplifier to be used for transmitting. The receiver stages from R.F. input to speaker output will be described in detail below.
http://homepage.eircom.net/~ei9gq/80M_.html

Click to enlarge80 metre superhet SSB receiver by VK3YE
http://home.alphalink.com.au/~parkerp/projects/projsup80.htm
 
 

Klik voor vergroting80 mtr DC receiver by PA2RF
About 12 years ago I built a nice DC receiver of which I found the description a couple of weeks ago. Good enough for a blog entry and... the receiver still works fine.
http://pa2rf.blogspot.com/2013/08/80-mtr-dc-receiver.html

Klik voor vergroting80m Band Direct Conversion Receiver by DL2YEO
The first differential amplifier inside the NE592 is used in this application (unlike it's normal function) as a symmetrical mixer.
http://www.qrp4u.de/docs/en/direkt_rx2/index.htm

Click to enlarge80m Passive Heterodyne Receiver by AA1TJ
Using a full-size antenna and a reasonably sensitive headphone, this simple switching mixer will produce an amazing abundance of signals on 80m.
http://radio-receivers.blogspot.com/2016/05/80m-passive-heterodyne-receiver-michael.html

Click to enlarge80m Receiver ROX-80 by G3ZOI
This design was inspired by the innovative SM5CJW receiver. The form factor is much smaller and lighter than other designs. The ergonomics are very good, and the receiver is easy to operate using a single hand, so it is an ideal receiver suitable for a beginner or orienteer.
http://open-circuit.co.uk/wp/receivers/rox-80/

Click to enlarge80m TTL ("One Chip") Direct Conversion Receiver by AA1TJ
This simple receiver is constructed around a single, 7400, Quad-NAND, TTL, integrated circuit. Please don't substitute 74S00, 74LS00, 74HC00, etc., for U1 in this circuit. At a minimum, the biasing would be incorrect for devices other than the "Plain Jane," 7400 IC.
http://radio-receivers.blogspot.com/2016/05/80m-ttl-one-chip-direct-conversion.html

Click to enlarge80-meter peilontvanger/receiver by PAHRX
Hrx80, 80-meter peilontvanger/receiver.
http://www.qsl.net/pa3fdc/tech/hrx80/
 

Click to enlarge80-meter Regenerative Receiver by K9PPW
I included this schematic of one of Bob's homebrew projects, an 80-meter regenerative receiver that uses only TWO transistors. This receiver is quite sensitive. The goal here was to make a receiver that has SMOOTH regeneration control, that doesn't "pop" into oscillation and "hop" frequency or pull as the gain is increased.
http://my.core.com/~jematz/qrp/k9ppw-s1.htm

Click to enlargeDirect conversion 80m receiver by OK1AYU
The aim of this project was to build a simple and cheap receiver for the new hams. Three receivers similar to the shown have been built by the students of our school.
http://www.qsl.net/ok1ayu/projects/rx80.htm

Click to enlargeIntegrated Circuit Receiver by SMVPO
The CA3123E is a simple single superhet receiver and is designed for operation in the medium waveband. I have used this IC up to 4 MHz with 100% success.
http://sm0vpo.altervista.org/rx/icrx1.htm

Click to enlarge'One Chip' Receiver by GFGI [G3YCC]
The circuit is of an 80 meter band one chip DC receiver, (excluding the AF stage). As you can see the design utilises the NE602 as VXO/mixer. It is economical with components.
http://www.zerobeat.net/g3ycc/80m_mini.htm

Click to enlargeRegenerative TRF Receiver by EI9GQ
I have received several e-mail messages from people looking for a design for a very simple receiver.I decided to use a computer sound card as the A.F. amplifier for a simple TRF receiver.
http://homepage.eircom.net/~ei9gq/regen.html

Rescaling the MRX-40 Receiver for 80 Meters by K7SZ
Last October I found myself on a flight to Tyndall Air Force Base in Florida ... Before leaving, I put a request on the QRP-L e-mail reflector for ideas or designs for a companion receiver kit to match the NoGANaut 80-meter trx.
http://www.arrl.org/files/file/Technology/tis/info/pdf/0105098.pdf

Click to enlargeRX1HF80: 80m SSB/CW/AM Receiver by ON6MU
I wanted to make a compact battery powered 80m band SSB receiver. Not only that, it should also be sensitive receiver and a simple design. I had experience with the SA612 double-balanced mixer, but I did'nt want to make a converter. It really had to be stand-alone little receiver.
http://users.belgacom.net/hamradio/schemas/rx1hf80%20receiver.htm

Click to enlargeSmall 80m direct conversion RX by VK2ZAY
I used the same unit that I built as a prototype for the LO in this project. I've added a buffer, mixer, an AF and RF amp of my own design, to make a very usable and quite compact 80m receiver.
http://www.vk2zay.net/article/46

Click to enlargeThe AGC-80 by KE3IJ
Here's a Regenerative Receiver project that I designed for the 80 meter Amateur band, but which can also be used in a wider-tuning configuration that covers approximately 3 MHz to 10 MHz, for Shortwave (World Band) listeners.
http://www.ke3ij.com/AGC-80.htm

Click to enlargeThe AGC-80/30 by KE3IJ
TA Dual-Band Regenerative Receiver for 80 Meters and 30 Meters, with Audio-Derived AGC
http://www.ke3ij.com/AGC-8030.htm

Click to enlargeThe AGC-80/40 by KE3IJ
A Regenerative Receiver with AGC for 80 and 40 Meters
http://www.ke3ij.com/AGC8040.htm

Click to enlargeThe DC-80 by KE3IJ
Most QRP designs over the last 30 years, on the other hand, have favored the Direct Conversion approach, which essentially means that we inject our incoming RF signal into one port of a mixer (usually a double-balanced diode ring) while injecting a tunable VFO into the other port.
http://www.ke3ij.com/DC-80.htm

Click to enlargeThe MMMM Receiver by 5R8SV
The 80m Madagascar Mighty Mite was suffering from a tree falls in the forest but nobody hears it syndrome.
http://blog.templaro.com/the-mmmm-receiver/

Click to enlargeVXO 80 metre receiver by VK2ZAY
I started by building a VXO circuit, to see just how far these things could be pulled. It was found to be quite practical to pull them about 100 kHz and still have a stable oscillator, meaning the two available devices could cover most of the interesting parts of 80 metres.
http://www.vk2zay.net/article/95


Creation date : 11/08/2007 @ 23:43
Last update : 23/09/2018 @ 19:27
Category : 80m Projects
Page read 47189 times


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