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No unread posts Attachment(s) Direct conversion receiver tips?

zarco

18

450

Jun Thu 20, 2019 2:18 am

avictor View the latest post

No unread posts Attachment(s) This kid paid attention in shop class...

decotronix

4

289

Jun Thu 20, 2019 1:09 am

Macrohenry View the latest post

No unread posts R390A speaker match DIY

TDane

6

118

Jun Tue 18, 2019 11:22 pm

TDane View the latest post

No unread posts Attachment(s) Wanted: Frequency Synthesizer Schematic

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Jthorusen

31

840

Jun Tue 18, 2019 8:46 am

Jthorusen View the latest post

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

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Norm Johnson

87

10428

Jun Mon 17, 2019 2:10 am

Norm Johnson View the latest post

Moved topic Moved: Atwater Kent Tuning Accuracy

CR220

6

217

Jun Tue 18, 2019 4:32 pm

lorenz200w View the latest post

No unread posts Attachment(s) Modulation monitor circuit question

Tube Radio

8

203

Jun Thu 13, 2019 1:47 pm

Tube Radio View the latest post

No unread posts First tube radio [WIP]

Chryseus

5

311

Jun Sun 09, 2019 3:47 pm

Chryseus View the latest post

No unread posts Attachment(s) QST two tube superhet

M1911A1

14

686

Jun Sat 08, 2019 1:22 pm

Dennis Banker View the latest post

No unread posts Attachment(s) Decent FM band tube preamplifier?

benman94

10

398

Jun Sat 08, 2019 3:14 am

Indiana Radios View the latest post

No unread posts Attachment(s) Single ended 6L6 amplifier

Erich Loepke

8

191

Jun Fri 07, 2019 8:14 pm

Flipperhome View the latest post

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

[ Go to pageGo to page: 1 ... 13, 14, 15 ]

john8750

287

5699

Jun Fri 07, 2019 12:03 am

john8750 View the latest post

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

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FStephenMasek

62

2408

Jun Thu 06, 2019 8:49 pm

FStephenMasek View the latest post

No unread posts sylvania 302 polymeter with Hot chassis

Airwavesantiques

6

226

Jun Tue 04, 2019 3:31 pm

stevebyan View the latest post

No unread posts Ampex output transformers for DIY amp build

madlabs

6

159

Jun Tue 04, 2019 3:15 pm

madlabs View the latest post

No unread posts Attachment(s) One Tube Receiver

Als_Basement

17

504

Jun Sun 02, 2019 3:24 am

Als_Basement View the latest post

No unread posts Attachment(s) Tube Amplifier Modeling Software

FStephenMasek

18

403

May Fri 24, 2019 4:36 pm

benman94 View the latest post

No unread posts Attachment(s) Amplifier question

[ Go to pageGo to page: 1, 2 ]

Tube Radio

24

572

May Fri 24, 2019 3:31 pm

Tube Radio View the latest post

No unread posts Attachment(s) Scope clock modification

Tube Radio

5

312

May Wed 22, 2019 7:19 pm

Tube Radio View the latest post

No unread posts Attachment(s) Trick to winding tight coils?

zarco

12

431

May Tue 21, 2019 7:11 pm

Scot Armstrong View the latest post

Moved topic Moved: good quality pots wanted!

williampage

4

389

May Wed 22, 2019 10:28 pm

Barry H Bennett View the latest post

No unread posts Attachment(s) 3 Transistor AM radio idea

BitHog

3

305

May Mon 20, 2019 2:34 pm

LM386 View the latest post

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

Buzz1151

9

721

May Mon 20, 2019 4:26 am

pauls.ironhorse View the latest post

No unread posts Attachment(s) Problems with Highly Rectangular Loops ?

krystallo

5

341

May Thu 16, 2019 8:53 pm

fifties View the latest post

No unread posts Attachment(s) AM Transmitter schematic

jim campbell

12

857

May Thu 16, 2019 7:44 pm

35Z5 View the latest post

No unread posts Attachment(s) Stewart warner combination

spsquires

1

199

May Mon 13, 2019 1:07 am

spsquires View the latest post

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

oldlongwave

6

386

May Mon 13, 2019 12:39 am

Jim Mueller View the latest post

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

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

upsss

50

6776

May Sun 12, 2019 5:25 pm

engineer View the latest post

No unread posts Attachment(s) Power supply redesign

Tube Radio

18

838

May Thu 09, 2019 10:58 pm

Tube Radio View the latest post

No unread posts Attachment(s) Remote tuner for a loop antenna

michael w

4

224

May Thu 09, 2019 7:49 pm

Macrohenry View the latest post

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

[ Go to pageGo to page: 1, 2 ]

Greenhorn

20

2715

May Wed 08, 2019 4:10 am

FStephenMasek View the latest post

No unread posts Attachment(s) Single-ended push-pull Better design found?

[ Go to pageGo to page: 1, 2 ]

westcoastjohn

23

659

May Mon 06, 2019 10:55 pm

radiotechnician View the latest post

No unread posts Attachment(s) coronado 650a power supply

Rich berg

15

493

May Mon 06, 2019 2:56 pm

Rich berg View the latest post

No unread posts schematic for CLC filtered power supply wanted

williampage

18

433

May Sun 05, 2019 6:32 am

Usually Lurking View the latest post

No unread posts Reproduction KNIGHT AM BROADCASTER

w0vt

2

408

May Sat 04, 2019 5:28 pm

Mike Toon View the latest post

No unread posts Attachment(s) Westinghouse H122 has new power supply.

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

westcoastjohn

56

8319

May Fri 03, 2019 8:29 pm

westcoastjohn View the latest post

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

xrhonda91

16

1016

May Fri 03, 2019 7:02 pm

wazz View the latest post

No unread posts Attachment(s) Low pass filter addition to amplifier

[ Go to pageGo to page: 1, 2 ]

Tube Radio

39

1630

Apr Tue 30, 2019 9:43 pm

Tube Radio View the latest post

No unread posts Attachment(s) 250 volt power supply info needed.

williampage

17

941

Apr Mon 29, 2019 5:46 pm

Usually Lurking View the latest post

No unread posts Attachment(s) Op Amp problems

[ Go to pageGo to page: 1, 2, 3, 4 ]

Dennis H.

74

1434

Apr Sun 28, 2019 6:03 pm

pauls.ironhorse View the latest post

No unread posts Calculating dropping resisitor for zener diodes

[ Go to pageGo to page: 1, 2 ]

Yeti575

20

422

Apr Thu 25, 2019 6:08 pm

upsss View the latest post

No unread posts How do bidirectional amps work?

Macrohenry

6

275

Apr Thu 25, 2019 12:35 am

Macrohenry View the latest post

No unread posts Attachment(s) AM PLL Transmitter kit

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

Ed in SoDak

51

4027

Apr Tue 23, 2019 5:22 pm

Tube Radio View the latest post

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

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

VanEpsFan1914

52

1765

Apr Mon 22, 2019 3:38 am

Tube Radio View the latest post

No unread posts Attachment(s) Demod probe results

allthumbs

8

350

Apr Fri 19, 2019 3:35 pm

Chas View the latest post

No unread posts Attachment(s) Tubeless FM Converter

Mike C.

4

266

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

254

Apr Wed 17, 2019 5:55 pm

Mike Toon View the latest post

No unread posts Attachment(s) AM flat loop antenna

[ Go to pageGo to page: 1, 2 ]

neondave

28

1390

Apr Fri 12, 2019 6:55 am

db gain View the latest post

No unread posts Attachment(s) CRT circuit question

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

Tube Radio

47

3860

Apr Fri 05, 2019 4:18 am

Tube Radio View the latest post

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

[ Go to pageGo to page: 1, 2 ]

benman94

24

1072

Apr Mon 01, 2019 9:31 pm

benman94 View the latest post

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