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| Topics |
Author |
Replies |
Views |
Last post |
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 Polyakov mixer working for DSB generation?
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sv3ora |
2 |
113 |
Jul Thu 29, 2021 10:16 am
Dare4444
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High Voltage Regulator Design Issue
[  Go to page: 1, 2 ]
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Jthorusen |
32 |
508 |
Jul Thu 29, 2021 8:10 am
ACORNVALVE
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Solid state 1920's speaker amplifier revisited
|
Tube Radio |
10 |
2367 |
Jul Thu 29, 2021 7:56 am
ACORNVALVE
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Antennae question
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keith1898 |
7 |
222 |
Jul Thu 29, 2021 2:06 am
fifties
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simple formulas for calculating tank circuit values?????????
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shockedagain75 |
10 |
692 |
Jul Thu 29, 2021 12:28 am
KK6GM
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SSB transceiver idea
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Dare4444 |
19 |
418 |
Jul Wed 28, 2021 3:41 am
Dare4444
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AM with IN4148 double balanced mixer
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Dare4444 |
2 |
133 |
Jul Mon 26, 2021 9:19 pm
Dare4444
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38 as regenerative detector
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allthumbs |
13 |
1058 |
Jul Mon 26, 2021 7:56 pm
err ducks
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Another regen 1D8 tube.
|
ballroad |
3 |
235 |
Jul Sat 24, 2021 12:16 am
mrx
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Schematic for regen utilizing an 815 tube?
|
KA8GEF |
3 |
146 |
Jul Fri 23, 2021 11:41 pm
N0BST
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Tube IF transformers
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dr pepper |
15 |
1450 |
Jul Fri 23, 2021 3:21 am
ACORNVALVE
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Variable Frequency Synthesized Source for AM Transmitters
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NW2K |
1 |
187 |
Jul Thu 22, 2021 9:35 pm
Colin Ames
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diy FM superhet without audio ?
|
aurel |
0 |
120 |
Jul Thu 22, 2021 2:26 pm
aurel
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Power ON indicator for battery tube sets.
|
Robert Lozier |
14 |
660 |
Jul Wed 21, 2021 6:38 pm
Tube Radio
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2m receiver ideas
|
Dare4444 |
6 |
585 |
Jul Wed 21, 2021 2:56 pm
Dare4444
|
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Single-end output amp schematic using 211 output tubes?
|
soloapollo |
4 |
289 |
Jul Sun 18, 2021 1:04 pm
NW2K
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Relay circuit question
[ Go to page: 1, 2 ]
|
Tube Radio |
22 |
1238 |
Jul Sun 18, 2021 9:17 am
Tube Radio
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Tickler Question
|
jimbob |
3 |
225 |
Jul Sat 17, 2021 9:49 pm
Jim Mueller
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AMT-MW207 525-1605kHz kit built - OK sort of...
|
Robert Lozier |
0 |
164 |
Jul Thu 15, 2021 8:47 pm
Robert Lozier
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Homebuild Reinartz tuner amp.
[ Go to page: 1, 2 ]
|
beast775 |
32 |
1686 |
Jul Wed 14, 2021 11:44 pm
mrx
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Antenna for QRP pixie kit
[ Go to page: 1, 2 ]
|
whfh99 |
21 |
789 |
Jul Wed 14, 2021 7:18 pm
whfh99
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My recent one tube regen
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ballroad |
10 |
773 |
Jul Wed 14, 2021 12:34 am
ballroad
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input impedance for BNC to opamp
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mhamiton |
11 |
489 |
Jul Tue 13, 2021 12:57 am
Jim Mueller
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Subharmonic SDR idea with schematic.
|
Dare4444 |
5 |
277 |
Jul Mon 12, 2021 11:33 pm
Dare4444
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Untested SSB SDR Idea. Any feedback or suggestions please
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Dare4444 |
5 |
175 |
Jul Sun 11, 2021 11:48 pm
Dare4444
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SDR Transceiver Idea with 2n7000
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Dare4444 |
1 |
144 |
Jul Sun 11, 2021 8:30 am
Dare4444
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ZX81
|
jsweinrich |
9 |
811 |
Jul Wed 07, 2021 2:45 am
Ed in SoDak
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LM386N MK-XI BCB Transmitter
[ Go to page: 1 ... 51, 52, 53 ]
|
35Z5 |
1046 |
307544 |
Jul Tue 06, 2021 8:43 am
Retrotube
|
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Loop antenna question
[ Go to page: 1, 2 ]
|
whfh99 |
20 |
891 |
Jul Sun 04, 2021 7:41 pm
OldWireBender
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Construction 3 tubes Audion 1923, all concert, patent Audion
[ Go to page: 1, 2 ]
|
yan_sk |
38 |
3547 |
Jul Sun 04, 2021 3:02 am
mrx
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All tube AM Transmitter
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jim campbell |
2 |
486 |
Jul Thu 01, 2021 4:38 pm
rxradio
|
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Crystal Radio Set
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Blustar1 |
17 |
7085 |
Jun Tue 29, 2021 6:50 am
Nivagues
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Heathkit White Solid Hookup Wire - What Gauge Was It ?
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Frank512 |
2 |
250 |
Jun Tue 29, 2021 1:05 am
Frank512
|
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Moved: Anyone collect Crystal radios?
[ Go to page: 1, 2, 3 ]
|
whfh99 |
51 |
2088 |
Jul Fri 09, 2021 7:28 am
BobWeaver
|
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Home brew 2.5 mH Choke (and Other Considerations) For Regen
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krystallo |
13 |
803 |
Jun Thu 24, 2021 1:04 am
shinkuukan
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Regen radio coil question
|
SkyKing |
6 |
627 |
Jun Wed 23, 2021 4:17 am
Macrohenry
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Flyback Driver Questions
|
Macrohenry |
10 |
844 |
Jun Mon 21, 2021 10:17 pm
ACORNVALVE
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LM317 regulator design
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mhamiton |
13 |
1005 |
Jun Sat 19, 2021 3:25 am
Jthorusen
|
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Update - My Vacuum Tube Frequency Synthesizer
[ Go to page: 1, 2 ]
|
BobWeaver |
20 |
2078 |
Jun Fri 18, 2021 10:02 pm
mblack
|
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This $1 piezo disc ROCKS! as a horn driver.
[ Go to page: 1, 2 ]
|
Robert Lozier |
34 |
2250 |
Jun Fri 18, 2021 4:09 am
hwhall
|
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converting an old radio into Bluetooth speaker with FM radio
|
rocky22 |
17 |
1207 |
Jun Sat 12, 2021 2:20 pm
jimsp
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UPDATE #2: RC-30 Manual television Cabinet Almost done!
[ Go to page: 1, 2, 3 ]
|
Mr. Highlander |
46 |
8116 |
Jun Thu 10, 2021 12:25 am
tym
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Moved: Is this called a machinist adjustable square ?
|
pauls.ironhorse |
5 |
543 |
Jun Tue 08, 2021 2:57 pm
pauls.ironhorse
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Magnetic loop antenna to regen interface?
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Sparks62 |
2 |
393 |
Jun Thu 03, 2021 11:35 pm
Sparks62
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New winner for impossible translation in transistor kit?
[ Go to page: 1, 2 ]
|
Robert Lozier |
23 |
1526 |
Jun Thu 03, 2021 2:47 pm
Robert Lozier
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How To Properly Install a On Off Slide Switche ?
|
Frank512 |
8 |
669 |
Jun Thu 03, 2021 1:17 pm
ACORNVALVE
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Assistance requested with a superhet build.
|
928GTS |
16 |
2873 |
May Sun 30, 2021 3:47 pm
928GTS
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PCB hole sizes to be ordered
|
Macrohenry |
6 |
657 |
May Sat 29, 2021 4:48 am
Macrohenry
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Moved: An Afternoon with John Rollins, W1FPZ
|
AE2EA |
0 |
298 |
May Fri 28, 2021 2:57 pm
AE2EA
|
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Constant current power supply
[ Go to page: 1, 2 ]
|
Tube Radio |
23 |
4880 |
May Mon 24, 2021 1:56 am
Tube Radio
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