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Activity within 7 days:

9 New Messages - 2 New Files - New Questions

Description

Welcome to the Homebrew Transistor Radio Group.

This group discusses recreating 1, 2 and 3 transistor receivers. This includes parts acquisition, assembly techniques, audio and radio frequency amplifiers, frequency converters, measurement instruments and contests.

Naturally, we can not discuss transistor receivers without "spilling over" into antennas, grounds, ICs, other not strictly transistor subjects.

The Homebrew Transistor Radio Group welcomes all people interested in transistor receivers for self education or enjoyment.

Legal unlicensed transmitter discussion (such as Part-15 in the USA) has moved to http://groups.yahoo.com/group/LUTT/

Electronic circuits using components from the germanium era can be found at http://tech.groups.yahoo.com/group/2N1150_Down/

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Re: Half-Hour 3-Transistor Low Frequency Receiver
... 47 CFR 15.219:
Posted - Mon Nov 9, 2009 7:42 pm
 Dave
wa4qal
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Re: Optical-Communications
All, WA4QAL found another optical-communications resource with schematics for practical circuits toward the end.
Posted - Mon Nov 9, 2009 7:28 pm
 Steven C
steven_coles
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Re: Half-Hour 3-Transistor Low Frequency Receiver
Ramon et al, Probably most areas have little LF (low frequency) of interest. In areas with really crammed-full AM BCB bands the LF receiver might be used with
Posted - Mon Nov 9, 2009 7:23 pm
 Steven C
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Optical-Communications
All, WA4QAL just called my attention to an optical-communications paper with some simple schematics.
Posted - Mon Nov 9, 2009 5:49 pm
 Steven C
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Re: {Disarmed} [Homebrew Transistor Radios] Half-Hour 3-Transistor L
Hello Steven et al, This is an interesting experiment for those capable of receiving near Long Wave stations, be them NDB’s (Non Directional Beacons for air
Posted - Mon Nov 9, 2009 3:57 pm
 Ramon Vargas
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2009 17 6 39 52 19 32 98 76 56 21 14
2008 64 53 32 31 38 28 88 20 21 75 14 34
2007 18 9 56 40 20 33 32 55 23 40 12 14
2006 143 60 88 219 213 61 67 37 23 16 7 33
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