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No unread posts Attachment(s) AM transistor radio from scratch

whfh99

8

151

Oct Mon 18, 2021 12:17 pm

ACORNVALVE View the latest post

No unread posts Attachment(s) How to alter your air variable capacitor.

lennyshere

9

3437

Oct Mon 18, 2021 7:44 am

OldRelic View the latest post

No unread posts Attachment(s) Medium Wave AM Transmitter Ideas & Circuits. Post Them Here.

Dare4444

11

456

Oct Mon 18, 2021 1:06 am

Dare4444 View the latest post

No unread posts Does anyone have the schematic for the Tom Kipgen radio

mrx

8

246

Oct Sun 17, 2021 7:28 pm

battradio@ View the latest post

No unread posts Attachment(s) Can someone help me identify this?

robroot61

11

227

Oct Sun 17, 2021 7:15 pm

battradio@ View the latest post

No unread posts Attachment(s) Popular Electronics 1955 "One Tube Wallop"

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transoceanic 8523

27

5709

Oct Sat 16, 2021 8:28 pm

Max Brandt View the latest post

No unread posts Antenna for QRP pixie kit

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whfh99

22

2034

Oct Sat 16, 2021 5:14 pm

whfh99 View the latest post

No unread posts Attachment(s) Looking for two beta testers for AM Transmitter

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Macrohenry

83

2570

Oct Sat 16, 2021 4:52 pm

Dare4444 View the latest post

No unread posts Doerle 3 tube signal gripper question

ehjohnny

7

315

Oct Fri 15, 2021 2:29 pm

Weanedontubes View the latest post

No unread posts Attachment(s) PS design for vintage low frequency receiver

SmoothOscillator

5

275

Oct Thu 14, 2021 3:41 am

SmoothOscillator View the latest post

No unread posts Attachment(s) TRF HOMEBREW RADIO

ACORNVALVE

9

2621

Oct Wed 13, 2021 6:34 pm

bb.odin View the latest post

No unread posts Attachment(s) Redesigning/Improving the Talking House Transmitter

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cc333

46

894

Oct Wed 13, 2021 11:57 am

Dare4444 View the latest post

No unread posts Attachment(s) Tecsun 2P3 troubleshooting

ohiotech

6

1619

Oct Sat 09, 2021 7:50 pm

Saturn5tony View the latest post

No unread posts Attachment(s) 2n7000 X 3 , Class E Part15 Transmitter Idea

Dare4444

6

277

Oct Fri 08, 2021 6:11 am

Dare4444 View the latest post

No unread posts Attachment(s) Actual radiated power of part 15 AM Transmitters?

Dare4444

2

164

Oct Fri 08, 2021 12:55 am

Dave Doughty View the latest post

No unread posts Attachment(s) Eight Crystal Controlled Frequencies for MW band. No PLL!

Dare4444

2

144

Oct Thu 07, 2021 2:30 am

Dare4444 View the latest post

No unread posts Attachment(s) Anyone ever tried base mod. for AM? Circuit..

Dare4444

3

249

Oct Wed 06, 2021 11:31 pm

Dare4444 View the latest post

No unread posts Attachment(s) 1.5V AM Transmitter with 100% modulation

Dare4444

3

320

Oct Wed 06, 2021 3:33 pm

SkyKing View the latest post

No unread posts VHF low-band TV transmitter circuits

neazoi

1

172

Oct Wed 06, 2021 2:44 am

Dare4444 View the latest post

No unread posts Ideas for a 12 - 13,5 VDC to 12 - 13,5 VAC inverter?

SIXMILLION DOLLARMAN

4

174

Oct Tue 05, 2021 1:31 pm

ACORNVALVE View the latest post

No unread posts Attachment(s) "Free" at VOMARC today

Rich, W3HWJ

1

195

Oct Sat 02, 2021 11:22 pm

mblack View the latest post

No unread posts Attachment(s) 74HC04 Franklin Osc based AM Transmitter. (Cool circuit!)

Dare4444

9

386

Oct Sat 02, 2021 4:59 am

Dare4444 View the latest post

No unread posts Attachment(s) One transistor part 15 AM Transmitter!

Dare4444

5

329

Oct Fri 01, 2021 2:26 pm

ACORNVALVE View the latest post

No unread posts Attachment(s) Another Part 15 AMTX idea. Would step down transformer work?

Dare4444

6

269

Sep Wed 29, 2021 10:06 pm

ACORNVALVE View the latest post

No unread posts Attachment(s) 300% positive modulation from 4 transistor AMTX

Dare4444

9

386

Sep Tue 28, 2021 11:43 pm

Dare4444 View the latest post

No unread posts Attachment(s) Question: headphones and protecting the OPT transformer

allthumbs

13

340

Sep Sun 26, 2021 4:53 pm

BikenSwim View the latest post

No unread posts Attachment(s) 2n2219A based 2m ham band amplifier

Dare4444

4

261

Sep Fri 24, 2021 11:34 am

vu2nan View the latest post

No unread posts anyone have any info on the Gibbons radio circuit?

mrx

0

147

Sep Thu 23, 2021 6:00 am

mrx View the latest post

No unread posts Attachment(s) New AM Transmitter Circuit Idea (Schematics).

Dare4444

8

293

Sep Wed 22, 2021 11:30 pm

Dare4444 View the latest post

No unread posts Attachment(s) 8 channel crystal controlled AM broadcast transmittet

Dare4444

0

130

Sep Wed 22, 2021 5:26 pm

Dare4444 View the latest post

No unread posts Attachment(s) Vectronics 1290K Revisited with pushpull 2n7000

Dare4444

4

223

Sep Wed 22, 2021 5:13 pm

Dare4444 View the latest post

No unread posts screen bias for the control grid of a 12sk7 tube?

currentresident75

3

196

Sep Tue 21, 2021 5:29 pm

currentresident75 View the latest post

No unread posts Attachment(s) BUILD AN AM TRANSMITTER FOR USE WITH ANTIQUE RADIOS

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Dare4444

20

606

Sep Tue 21, 2021 1:40 am

Dare4444 View the latest post

No unread posts Speaker level converter

Tube Radio

0

127

Sep Mon 20, 2021 1:32 pm

Tube Radio View the latest post

No unread posts Attachment(s) Spider coil forms

jimbob

12

728

Sep Sun 19, 2021 10:48 am

COM-NAV-ECM View the latest post

No unread posts Speaker Box Project

ZenithRadios

7

351

Sep Sat 18, 2021 7:08 pm

Tube Radio View the latest post

No unread posts Attachment(s) How to build an AM antenna optimized for a single frequency?

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soloapollo

49

1062

Sep Fri 17, 2021 8:11 am

Dare4444 View the latest post

No unread posts Frequency counter

jimbob

7

361

Sep Thu 16, 2021 10:21 pm

BobWeaver View the latest post

This topic is locked, you cannot edit posts or make further replies. Does Anyone Know What Has Happened To theradioboard.com?

LM386

2

297

Sep Wed 15, 2021 2:19 am

LM386 View the latest post

No unread posts Attachment(s) VFO Isolation Buffer Simulation

Dare4444

13

504

Sep Tue 14, 2021 6:44 pm

Dare4444 View the latest post

No unread posts Capacitor mounting brackets

jimbob

2

146

Sep Tue 14, 2021 4:26 pm

Chas View the latest post

No unread posts Attachment(s) Cascoded J310 MW band active antenna

Dare4444

2

164

Sep Tue 14, 2021 1:46 pm

Dare4444 View the latest post

No unread posts Attachment(s) Solid State Transformer Substitute: Update

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JnTX

28

7057

Sep Mon 13, 2021 11:18 am

ACORNVALVE View the latest post

No unread posts Attachment(s) Outputs treatment with a CD4060

Macrohenry

19

584

Sep Sun 12, 2021 4:48 pm

Macrohenry View the latest post

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

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beast775

35

2811

Sep Sun 12, 2021 7:29 am

beast775 View the latest post

This topic is locked, you cannot edit posts or make further replies. Reason for removal of my 0.5mW FM TX?

Dare4444

3

302

Sep Sat 11, 2021 5:59 pm

Dare4444 View the latest post

No unread posts Attachment(s) Help rebiasing my bagpipes to Si!

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Timmy73

23

1285

Sep Wed 01, 2021 7:59 am

ACORNVALVE View the latest post

No unread posts AC Hum Modulation Buster Questions

Macrohenry

2

563

Aug Tue 31, 2021 5:13 am

Audioman View the latest post

No unread posts Attachment(s) AM LOOP Antenna

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fifties

34

17858

Aug Mon 30, 2021 12:28 pm

Dalton View the latest post

No unread posts Attachment(s) Heathkit WA-P2 power supply build questions

Govee

14

1311

Aug Sat 28, 2021 12:15 pm

COM-NAV-ECM View the latest post

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