12BH7A 12V Separate Autodyne Receiver by JA9MAT
Features: * Separate OSC Circuit has a stable regeneration. * 4-Bands Coil covers from 600KHz to 12MHz
including 7 and 3.5MHz Ham Bands. * Only 12Vdc required. * Using an IC AF-Amplifier for PC.
17EW8 regenarative radio by JF1OZL
I will show you that, the old triode can be used by low voltage about 12 volts. Please see the circuits.
Regenerative radio in old days can make its activity by 17V-DC.
All Valve Receiver by SMØVPO
Some months ago I began work on an all valve (tube) general coverage receiver for the HF bands. The prototype
is now finished, but as I rebuild it on a decent chassis I will post any correction. This should only affect the coil.
A Regenerative Receiver for Beginners
A modern version of the classic regenerative receiver is shown in Fig 17.75. This project was designed and
built by Charles Kitchin. This kind of receiver is easy (and fun) to build ...
A Simple Regen Radio for Beginners by N1TEV
Need a simple, fun project - possibly for a Scout Radio Merit Badge? This project is a great way to introduce
kids of any age to electronics and shortwave listening.
A Three-Transistor Receiver by W1YDS
Even in this age of crowded bands and sphisticated communications systems, there is room for the lowly
regenerative receiver. The unit shown in Figs. 1 through 6 is a simple that should be easy for most anyone to build.
Battery Powered Tube Regenerative Receiver by K5BCQ
This is my attempt to come up with an improved design point relative to the earlier Air Champ AC-100 and
see what can really be done with a Regen.
Cigar Box Receiver by SMØVPO
I recently sent to QRP@WW a copy of the "CIGAR BOX TRANSMITTER" which was published in the March issue of
Practical Wireless. Here is the counterpart to that article, the CIGAR BOX RECEIVER.
CW Receiver for 80 and 40 Meters by KC6WDK
This amazingly sensitive and dependable "Simplest Ham Receiver" is capable of receiving CW (Morse Code)
signals. It is crystal controlled and thus very stable and immune to drift and hand-capacitance detuning.
DRM Demonstration Receiver by DF9CY
In many ways television and radio will change throughout the near future. Especially we will see the change from
analogue to digital technologies like DAB and DVB. ... The new technology is called DRM = Digital Radio Mondiale.
Fireball SOP Receiver by N2CX
A "universal" CW receiver for 80m + 40m (easy to adapt for other bands). Full featured, yet simple construction
and easy alignment. Direct conversion design for simplicity and performance.
Homebrew General Coverage Receiver Project by Gary Pershin
This web site gives detailed plans of my homebrew receiver. Frequency coverage is from below 300kHz to 30MHz.
With this radio you can receive AM, SSB, and CW. Tuning is accomplished with a digital PLL synthesizer.
Junk Box DC Receiver by 4S7NR
This idea of converting a super-heterodyne radio to a DC receiver came to me when I was a SWL. I built this receiver
from a Junked cassette radio. For long time I used to listen to our Ham friends on 40m using my Junk Receiver.
Low Voltage Two Tube Regen Receiver Using "Space Charge" Technology by K5BCQ
This was a fun project and all started when I was looking for low voltage designs for a Regen Receiver and
matching Transmitter. Several of the guys on the Glowbugs (GB) Reflector reminded me of "Space Charge" tubes ...
My First (Homemade) Shortwave Receiver 10kHz-30MHz by PA2OHH
When I made a new start with my old radio hobby, the first item to solve was how to construct something in
such a way that the prototype is also useable as the final version.
Regenerative Short Wave Radio by 7N3WVM
If you happen to have a ferrite bar antenna for short wave reception, try to build a regenerative short wave radio like
one shown above.
Shortwave Receiver 10kHz-30MHz by PA2OHH
This receiver was made with use of the experiences of my first receiver. This new one has some improvements
PLL wideband receiver by JF1OZL
This is a radio receiver covering the frequency from 500kHz to 9MHz. PLL digital tuner is used in this radio,
Therefore the receiving frequency is set by the switches on the front panel.
Portable Regenerative Receiver With Very Low Supply Current by PA2OHH
It is a modern portable version of the historical regenerative receiver, with transistors and a short telescopic
antenna plus RF preamplifier. And it is a real QRP receiver, supply is only 2 mA at 6 volt.
Small Portable Regenerative Receiver by PA2OHH
The Big portable regenerative receiver is quite successful. The electronic circuit would be very suitable
for a small portable receiver if there were not so many controls and switches.
Quick Receiver by SMØVPO
How many of you have got loads of test equipment in the shack that is not really doing anything most of the
time. I have got a couple of RF signal generators and a stereo amplifier (for music) amongst other things.
Regenerative receiver with 6SN7GT by SM5GNN
This is my October regenny as it looks right now. It works but more adjustements must be done before I'm
happy with it. It's based on the 1950 ARRL handbook design.
Short wave radio by JF1OZL
I will show you one of my first projects. I made it about 13 years ago. This is a radio. It does not have RF
amplifier. It has two stage of IF amplifier. It is a normal single super radio.
Simple Regen Radio for Beginners by N2APB
I worked closely with a couple of Boy Scouts in the neighborhood who showed some interest in my "radio stuff",
and we together constructed the Regen Shortwave Receiver using Manhattan-style ugly construction techniques.
Short Wave receiver by PA2RF
The receiver presented here is meant to make a variety of shortwave signals audible. In the first place designed
for reception of strong broadcast signals; reception of weaker CW and SSB is possible after adding a simple BFO.
Softrock: Ein Einstieg in die Technolgie des 'Software Defined Radio' durch DJ9CS
Im Kreis der 'Flex Radio Friends' enstand das Projekt SoftRock, um mit einem preiswerten Empfängerbausatz
neue Freunde und Nutzer für den SDR-1000 von FlexRadio Systems zu gewinnen.
Softrock Version 6.1 Software Defined Radio by DF9CY
I wanted to 'play' with a SDR = Software Defined Radio. I listened to a talk of OM Bodo Scholz DJ9CS on 1 May
2006 he gave in Eckernförde. It took me some time but in September I ordered a kit for me.
Synthesised HF Receiver by SMØVPO
This receiver was originally designed for simplicity and low cost, but, like other projects, it grew.
My receiver is now synthesized and the performance is quite comparable to many commercial designs.
The Progressive Receiver by AA3SJ
Original design by W7ZOI and K5IRK. My version of the Progressive Receiver was built following the schematics and
text found in the 1982 ARRL Handbook, section 8-37ff. The original article is found in QST November 1981.
The Sudden HF Receiver by G3YCC
The Sudden direct conversion receiver was described by Rev George Dobbs, G3RJV in Sprat number 58, back in
1989, and has proved to be a popular little receiver, for which a kit is available from Kanga Products.
Transistor Radio Receiver by GØUPL
I built this simple regenerative short wave radio receiver in 1982 with a lot of help from my Dad. It ran on
a 9 volt battery installed in the back of the box, on the right hand side.
Two Regen Receivers by SMØVPO
I still think that the simple receiver is a very important part of a QRP station. In the 30s and 40s regenerative
radio receivers were very popular; they are simple to build & give very good results, even for CW and SSB operation.
Valve Radio Receiver by GØUPL
This one was a lot of fun. This valve receiver was constructed in 1988 in the traditional way, i.e. an aluminium
front panel and chassis. A mains isolating transformer and rectifier was also required, this was built in a separate box ...