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No unread posts Biased diode detectors.

Felix

5

862

Oct Sat 15, 2016 10:36 pm

Frank512 View the latest post

No unread posts Calculating the tickler coil L

BakelitePete

2

516

Oct Sat 15, 2016 8:34 pm

BakelitePete View the latest post

No unread posts Attachment(s) 12 Volt EF97 shortwacve superhet

nico

3

616

Oct Fri 14, 2016 8:12 am

nico View the latest post

No unread posts Attachment(s) leds in parallel and switched NPN transistors

Betty99

7

913

Oct Fri 14, 2016 4:00 am

OldWireBender View the latest post

No unread posts Biasing A Diode Detector

Frank512

0

391

Oct Wed 12, 2016 4:50 am

Frank512 View the latest post

No unread posts Attachment(s) Radio converted to guitar amp?

k9uw

12

1393

Oct Mon 10, 2016 12:05 am

BikenSwim View the latest post

No unread posts Adding a power supply to a battery powered circuit

ccomer1955

4

613

Oct Sat 08, 2016 1:40 am

Chas View the latest post

No unread posts Attachment(s) 6BK7-6DT6 BCB Transmitter

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35Z5

77

10592

Oct Fri 07, 2016 4:14 am

Audioman View the latest post

No unread posts Attachment(s) Smartpone Speaker

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Flipperhome

26

4112

Oct Mon 03, 2016 5:38 am

hydrolisk1792 View the latest post

No unread posts Attachment(s) TNT, TGTP and Hartley self excited transmitters?

zarco

9

1055

Oct Sun 02, 2016 4:09 pm

Radioroslyn View the latest post

No unread posts Motor speed control circuit design (video added)

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Tube Radio

23

2425

Sep Fri 30, 2016 1:15 am

Tube Radio View the latest post

No unread posts Attachment(s) Simple antenna tuner

tube42

13

1282

Sep Thu 29, 2016 11:17 pm

aj2x View the latest post

No unread posts Attachment(s) field strength meter

anchorman

13

1032

Sep Wed 28, 2016 11:29 pm

BobWeaver View the latest post

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

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xrhonda91

26

7007

Sep Mon 26, 2016 8:57 am

Felix View the latest post

No unread posts Attachment(s) Uh-oh

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Macrohenry

70

17132

Sep Sun 25, 2016 11:44 pm

Macrohenry View the latest post

No unread posts Attachment(s) Need simple tube audio amp circuit

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ChrisRI

54

5029

Sep Sun 25, 2016 3:47 am

Tube Radio View the latest post

No unread posts Attachment(s) Flea Market Refugee Ham Station

Geoff Fors

14

1690

Sep Sun 18, 2016 3:33 am

aj2x View the latest post

This topic is locked, you cannot edit posts or make further replies. Attachment(s) Hammarlund SP-600 JX-17 HFO mod

Tube Radio

3

699

Sep Wed 14, 2016 5:33 pm

Tube Radio View the latest post

No unread posts Pam 29 build

archeus68

0

474

Sep Tue 13, 2016 5:01 am

archeus68 View the latest post

No unread posts Attachment(s) Converting an old VTVM Case into a Signal Tracer

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wrnewton

33

6071

Sep Thu 01, 2016 2:49 pm

wrnewton View the latest post

No unread posts Attachment(s) Homebrew headphones?

TDane

11

3187

Aug Wed 31, 2016 2:02 pm

HomebrewHeadphones View the latest post

No unread posts Attachment(s) Voltage circuit question

Tube Radio

5

785

Aug Fri 26, 2016 6:34 pm

Tube Radio View the latest post

No unread posts SSTRAN AMT3000 kit not working after assembly

Dylan Berichon

5

1032

Aug Thu 25, 2016 10:34 am

wrnewton View the latest post

No unread posts Phone line antenna

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jimbob

20

2307

Aug Sat 20, 2016 1:47 pm

BlewMagikSmoak View the latest post

No unread posts Attachment(s) B+ options

Macrohenry

19

1504

Aug Sat 20, 2016 4:07 am

Flipperhome View the latest post

No unread posts Attachment(s) TRF Tuner Project

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mbear2k

33

2382

Aug Fri 19, 2016 2:18 am

BobWeaver View the latest post

No unread posts Attachment(s) Mystery Radio Kit Need Help

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Radio-Parrot

21

1796

Aug Wed 17, 2016 10:15 pm

Tim Tress View the latest post

No unread posts Is it kit-worthy?

bill hamre

3

698

Aug Sat 13, 2016 6:25 pm

Norm Leal View the latest post

No unread posts Attachment(s) Neighbors using (LM386) tranceivers?

Mike Toon

11

2219

Aug Sat 13, 2016 5:56 pm

bill hamre View the latest post

No unread posts Attachment(s) How i can connect a ferrite core antenna

dimis

13

1157

Aug Sun 07, 2016 6:08 am

LM386 View the latest post

No unread posts Attachment(s) Cigar Box Battery Portable

kc5gym

4

7638

Aug Sun 07, 2016 2:15 am

kc5gym View the latest post

No unread posts Attachment(s) Designing an amp

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tube42

81

7680

Aug Fri 05, 2016 10:13 pm

Flipperhome View the latest post

No unread posts Stylus type

john8750

6

769

Aug Fri 05, 2016 4:14 am

john8750 View the latest post

No unread posts Frankencrafters SP-44

EarlyRadioMan

3

718

Aug Thu 04, 2016 5:42 pm

Eickerman View the latest post

No unread posts Attachment(s) coil winding

spider89119

6

956

Aug Wed 03, 2016 3:38 pm

tjugofyra View the latest post

No unread posts Attachment(s) Radio Shack 273-1380 Substitution ??

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BikeNEPA

21

4456

Aug Tue 02, 2016 4:47 am

Pbpix View the latest post

No unread posts Amplifiers using non-standard output tubes

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Tube Radio

59

3371

Aug Mon 01, 2016 5:24 am

Audioman View the latest post

No unread posts Attachment(s) 6volt 3amp Power supply

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cparsons2391

23

2176

Jul Sat 30, 2016 10:35 pm

fifties View the latest post

No unread posts Attachment(s) 31 m , 9400–9900 kHz Coil information WANTED

dimis

13

1422

Jul Fri 29, 2016 5:32 pm

Rich, W3HWJ View the latest post

No unread posts Replacing 45v battery with 5 9v batteries

BakeliteManCA

5

942

Jul Wed 27, 2016 11:22 pm

aa5nut View the latest post

No unread posts A Different Kind of FM Receiver Who can or has done it?

Audioman

5

853

Jul Wed 27, 2016 7:46 pm

Audioman View the latest post

No unread posts Indoor antenna idea

jimbob

12

1273

Jul Tue 26, 2016 11:27 pm

Alfredo_T View the latest post

No unread posts Attachment(s) 5902 Amp Build

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john8750

721

44165

Jul Tue 26, 2016 6:25 am

radiorich View the latest post

No unread posts Attachment(s) dB Question for Remote Controlled Volume Unit

Macrohenry

19

2117

Jul Sun 17, 2016 9:33 pm

Macrohenry View the latest post

No unread posts Attachment(s) MY FIRST TUBE AMP BUILD--FAVORITE BASS TREBEL CIRCUIT?

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jukeboxman

41

5460

Jul Sat 16, 2016 3:31 am

john8750 View the latest post

No unread posts Attachment(s) Small, simple, audio amplifier circut.

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Themoretubesthemarrier

32

2705

Jul Fri 15, 2016 8:51 pm

Tube Radio View the latest post

No unread posts Attachment(s) One-Dollar-Tube Guitar Amp

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mrriggs

42

3828

Jul Tue 12, 2016 9:24 pm

mrriggs View the latest post

No unread posts Attachment(s) My Latest Homebrew-built for Brian Wilson

Macrohenry

8

1781

Jul Sat 09, 2016 7:06 pm

Macrohenry View the latest post

No unread posts Attachment(s) ECC 85 FM tuner question

dimis

5

861

Jul Wed 06, 2016 8:30 am

Jim Mueller View the latest post

No unread posts Pi circuit/coil calculations for carrier current xmtr

N0BST

14

1323

Jul Fri 01, 2016 3:37 pm

Mr. Detrola View the latest post

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