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Alan Voorhees

0

632

Jul Fri 30, 2021 3:38 am

Alan Voorhees View the latest post

Topics
No unread posts Attachment(s) High Voltage Regulator Design Issue

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Jthorusen

52

832

Aug Mon 02, 2021 9:51 pm

OldWireBender View the latest post

No unread posts Attachment(s) Solid state 1920's speaker amplifier revisited

Tube Radio

16

2506

Aug Mon 02, 2021 3:25 pm

Tube Radio View the latest post

No unread posts Attachment(s) Low Noise DC receiver idea

Dare4444

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58

Aug Sun 01, 2021 10:27 pm

Dare4444 View the latest post

No unread posts simple formulas for calculating tank circuit values?????????

shockedagain75

11

812

Jul Sat 31, 2021 8:16 am

ACORNVALVE View the latest post

No unread posts Attachment(s) SDR Transceiver Idea with 2n7000

Dare4444

2

205

Jul Fri 30, 2021 7:36 pm

Dare4444 View the latest post

No unread posts Attachment(s) SSB transceiver idea

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Dare4444

20

529

Jul Fri 30, 2021 8:14 am

Dare4444 View the latest post

No unread posts Attachment(s) Polyakov mixer working for DSB generation?

sv3ora

6

230

Jul Fri 30, 2021 5:49 am

KX5JSC View the latest post

No unread posts Attachment(s) Antennae question

keith1898

14

345

Jul Fri 30, 2021 5:38 am

Mike Toon View the latest post

No unread posts How To Properly Install a On Off Slide Switche ?

Frank512

9

753

Jul Thu 29, 2021 4:03 pm

err ducks View the latest post

No unread posts Attachment(s) AM with IN4148 double balanced mixer

Dare4444

2

183

Jul Mon 26, 2021 9:19 pm

Dare4444 View the latest post

No unread posts Attachment(s) 38 as regenerative detector

allthumbs

13

1096

Jul Mon 26, 2021 7:56 pm

err ducks View the latest post

No unread posts Attachment(s) Another regen 1D8 tube.

ballroad

3

268

Jul Sat 24, 2021 12:16 am

mrx View the latest post

No unread posts Schematic for regen utilizing an 815 tube?

KA8GEF

3

177

Jul Fri 23, 2021 11:41 pm

N0BST View the latest post

No unread posts Attachment(s) Tube IF transformers

dr pepper

15

1494

Jul Fri 23, 2021 3:21 am

ACORNVALVE View the latest post

No unread posts Variable Frequency Synthesized Source for AM Transmitters

NW2K

1

216

Jul Thu 22, 2021 9:35 pm

Colin Ames View the latest post

No unread posts diy FM superhet without audio ?

aurel

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135

Jul Thu 22, 2021 2:26 pm

aurel View the latest post

No unread posts Attachment(s) Power ON indicator for battery tube sets.

Robert Lozier

14

694

Jul Wed 21, 2021 6:38 pm

Tube Radio View the latest post

No unread posts 2m receiver ideas

Dare4444

6

602

Jul Wed 21, 2021 2:56 pm

Dare4444 View the latest post

No unread posts Single-end output amp schematic using 211 output tubes?

soloapollo

4

316

Jul Sun 18, 2021 1:04 pm

NW2K View the latest post

No unread posts Attachment(s) Relay circuit question

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Tube Radio

22

1261

Jul Sun 18, 2021 9:17 am

Tube Radio View the latest post

No unread posts Tickler Question

jimbob

3

247

Jul Sat 17, 2021 9:49 pm

Jim Mueller View the latest post

No unread posts Attachment(s) AMT-MW207 525-1605kHz kit built - OK sort of...

Robert Lozier

0

178

Jul Thu 15, 2021 8:47 pm

Robert Lozier View the latest post

No unread posts Attachment(s) Homebuild Reinartz tuner amp.

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beast775

32

1753

Jul Wed 14, 2021 11:44 pm

mrx View the latest post

No unread posts Antenna for QRP pixie kit

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whfh99

21

815

Jul Wed 14, 2021 7:18 pm

whfh99 View the latest post

No unread posts Attachment(s) My recent one tube regen

ballroad

10

811

Jul Wed 14, 2021 12:34 am

ballroad View the latest post

No unread posts input impedance for BNC to opamp

mhamiton

11

516

Jul Tue 13, 2021 12:57 am

Jim Mueller View the latest post

No unread posts Attachment(s) Subharmonic SDR idea with schematic.

Dare4444

5

288

Jul Mon 12, 2021 11:33 pm

Dare4444 View the latest post

No unread posts Attachment(s) Untested SSB SDR Idea. Any feedback or suggestions please

Dare4444

5

190

Jul Sun 11, 2021 11:48 pm

Dare4444 View the latest post

No unread posts Attachment(s) ZX81

jsweinrich

9

840

Jul Wed 07, 2021 2:45 am

Ed in SoDak View the latest post

No unread posts Attachment(s) LM386N MK-XI BCB Transmitter

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35Z5

1046

308154

Jul Tue 06, 2021 8:43 am

Retrotube View the latest post

No unread posts Attachment(s) Loop antenna question

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whfh99

20

975

Jul Sun 04, 2021 7:41 pm

OldWireBender View the latest post

No unread posts Attachment(s) Construction 3 tubes Audion 1923, all concert, patent Audion

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yan_sk

38

3624

Jul Sun 04, 2021 3:02 am

mrx View the latest post

No unread posts All tube AM Transmitter

jim campbell

2

500

Jul Thu 01, 2021 4:38 pm

rxradio View the latest post

No unread posts Attachment(s) Crystal Radio Set

Blustar1

17

7152

Jun Tue 29, 2021 6:50 am

Nivagues View the latest post

No unread posts Heathkit White Solid Hookup Wire - What Gauge Was It ?

Frank512

2

265

Jun Tue 29, 2021 1:05 am

Frank512 View the latest post

Moved topic Attachment(s) Moved: Anyone collect Crystal radios?

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whfh99

51

2176

Jul Fri 09, 2021 7:28 am

BobWeaver View the latest post

No unread posts Attachment(s) Home brew 2.5 mH Choke (and Other Considerations) For Regen

krystallo

13

842

Jun Thu 24, 2021 1:04 am

shinkuukan View the latest post

No unread posts Attachment(s) Regen radio coil question

SkyKing

6

657

Jun Wed 23, 2021 4:17 am

Macrohenry View the latest post

No unread posts Attachment(s) Flyback Driver Questions

Macrohenry

10

896

Jun Mon 21, 2021 10:17 pm

ACORNVALVE View the latest post

No unread posts Attachment(s) LM317 regulator design

mhamiton

13

1053

Jun Sat 19, 2021 3:25 am

Jthorusen View the latest post

No unread posts Attachment(s) Update - My Vacuum Tube Frequency Synthesizer

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BobWeaver

20

2154

Jun Fri 18, 2021 10:02 pm

mblack View the latest post

No unread posts Attachment(s) This $1 piezo disc ROCKS! as a horn driver.

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Robert Lozier

34

2359

Jun Fri 18, 2021 4:09 am

hwhall View the latest post

No unread posts Attachment(s) converting an old radio into Bluetooth speaker with FM radio

rocky22

17

1253

Jun Sat 12, 2021 2:20 pm

jimsp View the latest post

No unread posts Attachment(s) UPDATE #2: RC-30 Manual television Cabinet Almost done!

[ Go to pageGo to page: 1, 2, 3 ]

Mr. Highlander

46

8190

Jun Thu 10, 2021 12:25 am

tym View the latest post

Moved topic Attachment(s) Moved: Is this called a machinist adjustable square ?

pauls.ironhorse

5

558

Jun Tue 08, 2021 2:57 pm

pauls.ironhorse View the latest post

No unread posts Magnetic loop antenna to regen interface?

Sparks62

2

405

Jun Thu 03, 2021 11:35 pm

Sparks62 View the latest post

No unread posts New winner for impossible translation in transistor kit?

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Robert Lozier

23

1569

Jun Thu 03, 2021 2:47 pm

Robert Lozier View the latest post

No unread posts Attachment(s) Assistance requested with a superhet build.

928GTS

16

2915

May Sun 30, 2021 3:47 pm

928GTS View the latest post

No unread posts PCB hole sizes to be ordered

Macrohenry

6

687

May Sat 29, 2021 4:48 am

Macrohenry View the latest post

Moved topic Moved: An Afternoon with John Rollins, W1FPZ

AE2EA

0

309

May Fri 28, 2021 2:57 pm

AE2EA View the latest post

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