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| Topics |
Author |
Replies |
Views |
Last post |
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 Crystal radio phasing
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Mike Toon |
10 |
289 |
Jul Thu 07, 2022 2:37 am
Mike Toon
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UX 240 Detectors
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crm114 |
0 |
45 |
Jul Wed 06, 2022 8:00 pm
crm114
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Ordering PCBs: Part 15 PLL Synthesized Transmitter Board
[  Go to page: 1 ... 5, 6, 7 ]
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Macrohenry |
137 |
6604 |
Jul Wed 06, 2022 6:31 am
radiorich
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Macrohenry Transmitter Construction
[ Go to page: 1, 2, 3 ]
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Macrohenry |
56 |
1606 |
Jul Wed 06, 2022 4:11 am
mjgillen
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perturb and observe home brew circuit
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rchiapparelli |
4 |
251 |
Jul Tue 05, 2022 3:12 pm
richfair
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Macrohenry Transmitter Components
[ Go to page: 1, 2, 3, 4 ]
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processhead |
62 |
2677 |
Jul Mon 04, 2022 4:48 am
Macrohenry
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Looking for two beta testers for AM Transmitter
[ Go to page: 1, 2, 3, 4, 5 ]
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Macrohenry |
99 |
10289 |
Jul Sat 02, 2022 4:00 am
Macrohenry
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Telephone Interface Suggestions Sought
[ Go to page: 1, 2 ]
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telegrapher |
26 |
1458 |
Jul Fri 01, 2022 5:41 am
Usually Lurking
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JFET Testing and Matching
[ Go to page: 1, 2 ]
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Frank512 |
28 |
1260 |
Jun Thu 30, 2022 8:38 pm
OldWireBender
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Why does my crystal radio design work?
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6tom |
18 |
1246 |
Jun Wed 29, 2022 4:25 pm
battradio@
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Winding Antenna Coils
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crm114 |
5 |
555 |
Jun Mon 27, 2022 7:14 pm
err ducks
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Anyone recognize this 3-tube homebrew?
[ Go to page: 1, 2 ]
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1N770 |
39 |
2327 |
Jun Mon 27, 2022 7:12 am
pehamel
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455KHz IF oscillator with only three parts
|
Dare4444 |
7 |
665 |
Jun Thu 23, 2022 5:22 pm
maxequat
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Zenith console mod question
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Tube Radio |
3 |
1905 |
Jun Mon 20, 2022 6:57 pm
Tube Radio
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Magnavox AMP-142AB restore and mods
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Tube Radio |
8 |
1665 |
Jun Mon 20, 2022 3:57 am
Tube Radio
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Antique Car Stereo Bluetooth Audio Retrofit with ESP32
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jcrubin |
3 |
417 |
Jun Sat 18, 2022 12:42 am
jcrubin
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A.M. BROADCASTER: MORE PROBLEMS
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catsimon |
6 |
456 |
Jun Fri 17, 2022 2:54 pm
Tim Tress
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Mic pre-amp ideas?
|
GuitarDick |
2 |
217 |
Jun Fri 17, 2022 2:03 am
wazz
|
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Some of my work on one-tube transmitters
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K6RRE |
5 |
404 |
Jun Thu 16, 2022 2:55 pm
forumuser
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Hat Radio replica
|
jtn050 |
12 |
536 |
Jun Tue 14, 2022 11:59 pm
Mr. Detrola
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Audio half of regen rcvr - advice?
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allthumbs |
15 |
918 |
Jun Tue 14, 2022 6:30 pm
allthumbs
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What Is It With 2 4 8 16 Pill RF Amps??
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Yorkman |
7 |
544 |
Jun Tue 14, 2022 3:56 pm
K4PIH
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Hey Thumbs
|
jimbob |
1 |
234 |
Jun Tue 14, 2022 1:20 am
allthumbs
|
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Homebrew tube lighting counter
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sv3ora |
9 |
414 |
Jun Mon 13, 2022 11:00 pm
Macrohenry
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Semi-universal replacement
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Kim N. |
8 |
483 |
Jun Sun 12, 2022 10:37 pm
mblack
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Does Anyone Have Information About theradioboard.com?
|
LM386 |
18 |
2270 |
Jun Sun 12, 2022 8:41 am
aurel
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New transmitter
|
Tatem180 |
3 |
462 |
Jun Fri 10, 2022 9:22 pm
Colin Ames
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Audio Output Transformer choices
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Scota4570 |
2 |
331 |
Jun Thu 09, 2022 5:43 pm
battradio@
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Dave's 1D8GT
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jimbob |
9 |
640 |
Jun Wed 08, 2022 9:18 pm
jimbob
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Can you over filter a power supply?
|
Mike Toon |
19 |
1140 |
Jun Wed 08, 2022 4:32 am
Pbpix
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Long wire ( random wire) and ground proximity
[ Go to page: 1, 2, 3, 4 ]
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poulsbobill |
78 |
18329 |
Jun Sun 05, 2022 11:38 pm
Marcc
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Guitar amp schematic
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Scota4570 |
13 |
1126 |
Jun Fri 03, 2022 8:23 pm
NW2K
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Low voltage tube crystal oscillator ALC
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neazoi |
6 |
345 |
Jun Fri 03, 2022 2:32 am
Jim Mueller
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Interesting noise blanking circuit
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Dare4444 |
0 |
195 |
Jun Thu 02, 2022 12:46 am
Dare4444
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Center tap on secondary RF coils, what purpose are they?
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crabeapple |
12 |
780 |
May Tue 31, 2022 7:12 pm
infomet
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UNUNs, lightning arrestors but for MW
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sgath92 |
6 |
399 |
May Tue 31, 2022 4:23 pm
madlabs
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New FM PLL idea
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Dare4444 |
0 |
227 |
May Mon 30, 2022 11:29 am
Dare4444
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Need help identifying
|
robroot61 |
17 |
1083 |
May Sun 29, 2022 4:39 pm
robroot61
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Reflex Receiver with MOSFETs
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Dare4444 |
1 |
376 |
May Wed 25, 2022 7:05 pm
OldWireBender
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D shaped variable capacitor shafts
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jimbob |
3 |
350 |
May Wed 25, 2022 4:29 pm
Mike Toon
|
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Can anyone possibly help me to identify this homebrew rig?
|
Big Nick |
12 |
4141 |
May Wed 25, 2022 6:10 am
john8750
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control amp for a 300B
[ Go to page: 1 ... 4, 5, 6 ]
|
john8750 |
103 |
7206 |
May Wed 25, 2022 5:58 am
john8750
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Frequency counter
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jimbob |
7 |
534 |
May Mon 23, 2022 4:31 pm
mblack
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15 watt solid state amp kit question
|
Tube Radio |
14 |
736 |
May Wed 18, 2022 9:01 pm
Tube Radio
|
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Extracting 5V DC from a Bias-T to power a LNA
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avicci |
1 |
214 |
May Wed 18, 2022 12:49 pm
richfair
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Another PLL FM Transmitter (3 Transistor RF Stage + PLL)
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Dare4444 |
0 |
186 |
May Sun 15, 2022 3:50 pm
Dare4444
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simple space charge rf preamplifier does not work
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sv3ora |
17 |
641 |
May Fri 13, 2022 11:38 pm
ACORNVALVE
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Adding antenna to a ferrite rod ??
|
6tom |
8 |
725 |
May Fri 13, 2022 6:33 pm
Tube Radio
|
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what is this part on this Two Transistor Reflex Radio
|
6tom |
6 |
668 |
May Mon 09, 2022 10:56 pm
6tom
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PLL Hum Cancellation Circuit
|
Dare4444 |
4 |
336 |
May Sun 08, 2022 7:53 am
OldWireBender
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