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Announcements
No unread posts Attachment(s) We're back ... What happened.

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Alan Voorhees

59

17603

Apr Thu 25, 2019 10:45 pm

Dude111 View the latest post

Topics
No unread posts Attachment(s) Another Little Prince- tube preamp

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john8750

204

2758

Apr Fri 26, 2019 12:39 am

john8750 View the latest post

No unread posts Calculating dropping resisitor for zener diodes

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Yeti575

20

212

Apr Thu 25, 2019 6:08 pm

upsss View the latest post

No unread posts Attachment(s) A Deluxe Receiver for the DX Operator

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Norm Johnson

72

9020

Apr Thu 25, 2019 12:46 pm

KA8GEF View the latest post

No unread posts How do bidirectional amps work?

Macrohenry

6

149

Apr Thu 25, 2019 12:35 am

Macrohenry View the latest post

No unread posts Attachment(s) Amplifier question

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Tube Radio

21

218

Apr Wed 24, 2019 1:31 am

Tube Radio View the latest post

No unread posts Attachment(s) Super-Duper Simple single-FET external AM-BCB booster...

xrhonda91

15

677

Apr Wed 24, 2019 1:29 am

xrhonda91 View the latest post

No unread posts Attachment(s) AM Transmitter schematic

jim campbell

9

319

Apr Wed 24, 2019 1:14 am

Audioman View the latest post

No unread posts Attachment(s) AM PLL Transmitter kit

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Ed in SoDak

51

3556

Apr Tue 23, 2019 5:22 pm

Tube Radio View the latest post

No unread posts Attachment(s) Scope clock modification

Tube Radio

0

43

Apr Mon 22, 2019 7:23 pm

Tube Radio View the latest post

No unread posts Attachment(s) Homebrew 1920s-'30s record player...I'm clueless. Ideas?

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VanEpsFan1914

52

1356

Apr Mon 22, 2019 3:38 am

Tube Radio View the latest post

No unread posts Is there a ferrite rod/material for use on HF frequencies?

oldlongwave

4

164

Apr Sat 20, 2019 12:47 am

BobWeaver View the latest post

No unread posts Attachment(s) Demod probe results

allthumbs

8

222

Apr Fri 19, 2019 3:35 pm

Chas View the latest post

No unread posts Attachment(s) Tubeless FM Converter

Mike C.

4

170

Apr Thu 18, 2019 5:56 pm

pauls.ironhorse View the latest post

No unread posts Attachment(s) Metered soft start with digital meter

Sal Brisindi

4

170

Apr Wed 17, 2019 5:55 pm

Mike Toon View the latest post

No unread posts Attachment(s) Building the Stancor Williamson Amp: 807 PP

Greenhorn

16

2223

Apr Sat 13, 2019 5:11 am

Greenhorn View the latest post

No unread posts Making a 1937 Airline radio chassis now on Youtube

Buzz1151

6

475

Apr Fri 12, 2019 10:34 pm

Buzz1151 View the latest post

No unread posts Attachment(s) Op Amp problems

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Dennis H.

72

1037

Apr Fri 12, 2019 2:28 pm

pixellany View the latest post

No unread posts Attachment(s) AM flat loop antenna

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neondave

28

1039

Apr Fri 12, 2019 6:55 am

db gain View the latest post

No unread posts schematic for CLC filtered power supply wanted

williampage

14

252

Apr Sun 07, 2019 6:21 pm

OldWireBender View the latest post

No unread posts Attachment(s) CRT circuit question

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Tube Radio

47

3524

Apr Fri 05, 2019 4:18 am

Tube Radio View the latest post

No unread posts 250 volt power supply info needed.

williampage

15

745

Apr Thu 04, 2019 1:47 am

Rich, W3HWJ View the latest post

No unread posts Attachment(s) Questions about Laplace transforms in LTSpice.

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benman94

24

812

Apr Mon 01, 2019 9:31 pm

benman94 View the latest post

No unread posts Attachment(s) AA5's on 24v wall transformers

jimsp

6

433

Apr Mon 01, 2019 7:47 pm

35Z5 View the latest post

No unread posts Layout and Routing

rmileham

5

193

Apr Mon 01, 2019 7:44 pm

flyboy71 View the latest post

No unread posts Attachment(s) Poll: Preparing for a Circlotron amplifier build - 6V6 vs 6BG6G?

benman94

14

585

Apr Mon 01, 2019 5:21 pm

benman94 View the latest post

No unread posts Attachment(s) DIY Bluetooth to AM With Off The Shelf Parts

lewiss

9

571

Apr Mon 01, 2019 2:32 am

Tube Radio View the latest post

No unread posts 1CP1 scope tube

Tube Radio

10

4044

Apr Mon 01, 2019 2:15 am

Tube Radio View the latest post

No unread posts Attachment(s) To ground or not to ground

breadbox

7

322

Mar Sun 31, 2019 5:05 am

westcoastjohn View the latest post

No unread posts Attachment(s) Tim's AM tube transmitter build

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TV MAN

79

7392

Mar Sat 30, 2019 3:57 pm

infzqi View the latest post

No unread posts Attachment(s) AM transmitter question

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Tube Radio

60

1281

Mar Sat 30, 2019 3:49 am

Tube Radio View the latest post

No unread posts Attachment(s) Stacking Transformers

Michael Janis

1

243

Mar Sat 30, 2019 12:28 am

westcoastjohn View the latest post

No unread posts Attachment(s) Ferrite Sleeve Loop antennas: Are they for real?

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pentagrid

51

16240

Mar Wed 27, 2019 4:35 am

BobWeaver View the latest post

No unread posts Attachment(s) Tube circuits on copper clad board

allthumbs

10

335

Mar Mon 25, 2019 3:58 am

Elvirafan View the latest post

No unread posts Attachment(s) 12AV6-12CS6 Transmitter(Revised Schematic)

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35Z5

687

141566

Mar Sun 24, 2019 3:39 pm

bill hamre View the latest post

Moved topic Moved: Inexpensive spectrum analyzer GQ EMF-380 V2

KA

0

168

Mar Sun 24, 2019 5:13 am

KA View the latest post

No unread posts Antique Earphones

onlyrick

9

583

Mar Fri 22, 2019 4:17 am

VanEpsFan1914 View the latest post

No unread posts Attachment(s) My Solid State Magic Eye

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upsss

49

6106

Mar Wed 20, 2019 9:26 pm

anchorman View the latest post

No unread posts Attachment(s) Signal tracer question.

Wrenchtwister

4

440

Mar Tue 19, 2019 5:28 am

LM386 View the latest post

No unread posts Attachment(s) Power supply redesign

Tube Radio

10

471

Mar Tue 19, 2019 12:57 am

Tube Radio View the latest post

No unread posts My four transistor FMTX

Dare4444

19

625

Mar Sun 17, 2019 6:49 pm

Dare4444 View the latest post

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

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35Z5

973

176378

Mar Sun 17, 2019 6:32 am

radiorich View the latest post

No unread posts Attachment(s) Homebrew pin to phone plug adapter

crgrbrts

1

209

Mar Fri 15, 2019 3:05 pm

processhead View the latest post

No unread posts Attachment(s) Infinite impedance detector radio project(s)...

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xrhonda91

28

15185

Mar Mon 11, 2019 4:45 pm

xrhonda91 View the latest post

No unread posts Attachment(s) Tube Biasing Question

ErikD

9

469

Mar Sun 10, 2019 5:17 pm

Usually Lurking View the latest post

No unread posts Attachment(s) Din Cable for Telefunken Jubilate Delux

C1wlou

3

201

Mar Sat 09, 2019 5:24 am

majoco View the latest post

No unread posts Attachment(s) 807 Williamson amp

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john8750

1105

40302

Mar Fri 08, 2019 12:16 am

john8750 View the latest post

No unread posts Attachment(s) BC-455A BFO

Tube Radio

8

340

Mar Thu 07, 2019 12:41 am

shinkuukan View the latest post

No unread posts Attachment(s) How about this 6L6 amplifier

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FStephenMasek

42

1504

Mar Tue 05, 2019 5:21 am

FStephenMasek View the latest post

No unread posts Attachment(s) Stereo unbalanced to mono balanced adapter

Tube Radio

13

346

Mar Sun 03, 2019 6:28 am

Tube Radio View the latest post

No unread posts Attachment(s) My two transistor FMTX

Dare4444

17

3080

Mar Sat 02, 2019 9:09 pm

Dare4444 View the latest post

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