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Alan Voorhees

0

11020

Jul Fri 30, 2021 3:38 am

Alan Voorhees View the latest post

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

Dare4444

7

180

Sep Mon 27, 2021 1:49 pm

Peter Bertini View the latest post

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

Dare4444

2

57

Sep Mon 27, 2021 1:42 pm

Peter Bertini View the latest post

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

Dare4444

1

64

Sep Sun 26, 2021 8:45 pm

Dare4444 View the latest post

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

allthumbs

13

221

Sep Sun 26, 2021 4:53 pm

BikenSwim View the latest post

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

Dare4444

4

127

Sep Sat 25, 2021 4:45 am

Dare4444 View the latest post

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

Dare4444

4

177

Sep Fri 24, 2021 11:34 am

vu2nan View the latest post

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

Dare4444

0

69

Sep Fri 24, 2021 10:00 am

Dare4444 View the latest post

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

[ Go to pageGo to page: 1, 2 ]

Macrohenry

28

883

Sep Thu 23, 2021 4:18 pm

Macrohenry View the latest post

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

mrx

0

84

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

201

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

79

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

170

Sep Wed 22, 2021 5:13 pm

Dare4444 View the latest post

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

Dare4444

2

149

Sep Tue 21, 2021 8:35 pm

Dare4444 View the latest post

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

currentresident75

3

132

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

459

Sep Tue 21, 2021 1:40 am

Dare4444 View the latest post

No unread posts Speaker level converter

Tube Radio

0

93

Sep Mon 20, 2021 1:32 pm

Tube Radio View the latest post

No unread posts Attachment(s) Spider coil forms

jimbob

12

607

Sep Sun 19, 2021 10:48 am

COM-NAV-ECM View the latest post

No unread posts Speaker Box Project

ZenithRadios

7

283

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?

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

soloapollo

49

886

Sep Fri 17, 2021 8:11 am

Dare4444 View the latest post

No unread posts Frequency counter

jimbob

7

293

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

243

Sep Wed 15, 2021 2:19 am

LM386 View the latest post

No unread posts Attachment(s) VFO Isolation Buffer Simulation

Dare4444

13

427

Sep Tue 14, 2021 6:44 pm

Dare4444 View the latest post

No unread posts Capacitor mounting brackets

jimbob

2

121

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

124

Sep Tue 14, 2021 1:46 pm

Dare4444 View the latest post

No unread posts Attachment(s) Tecsun 2P3 troubleshooting

ohiotech

5

1435

Sep Mon 13, 2021 6:21 pm

gearhead222 View the latest post

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

[ Go to pageGo to page: 1, 2 ]

JnTX

28

6853

Sep Mon 13, 2021 11:18 am

ACORNVALVE View the latest post

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

Macrohenry

19

509

Sep Sun 12, 2021 4:48 pm

Macrohenry View the latest post

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

[ Go to pageGo to page: 1, 2 ]

beast775

35

2615

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

243

Sep Sat 11, 2021 5:59 pm

Dare4444 View the latest post

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

[ Go to pageGo to page: 1, 2 ]

Timmy73

23

1101

Sep Wed 01, 2021 7:59 am

ACORNVALVE View the latest post

No unread posts AC Hum Modulation Buster Questions

Macrohenry

2

449

Aug Tue 31, 2021 5:13 am

Audioman View the latest post

No unread posts Attachment(s) AM LOOP Antenna

[ Go to pageGo to page: 1, 2 ]

fifties

34

17568

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

1216

Aug Sat 28, 2021 12:15 pm

COM-NAV-ECM View the latest post

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

[ Go to pageGo to page: 1, 2 ]

928GTS

21

3710

Aug Thu 26, 2021 9:40 pm

928GTS View the latest post

No unread posts Attachment(s) Choke hum on LM386 Transmitter

[ Go to pageGo to page: 1, 2 ]

Macrohenry

23

1132

Aug Tue 24, 2021 3:21 am

Macrohenry View the latest post

No unread posts Attachment(s) Two more instruments for Brian Wilson

Macrohenry

5

614

Aug Sat 21, 2021 9:41 pm

Colin Ames View the latest post

No unread posts Attachment(s) New Project: Audio/Visual Part 15 Antenna Tuning Indicator

Macrohenry

3

341

Aug Sat 21, 2021 9:14 pm

Macrohenry View the latest post

No unread posts Attachment(s) Short antenna capacitance

Macrohenry

3

2820

Aug Tue 17, 2021 6:59 pm

Macrohenry View the latest post

No unread posts Attachment(s) Stereo to monophonic conversion circuit to build?

soloapollo

18

924

Aug Tue 17, 2021 12:43 pm

ACORNVALVE View the latest post

No unread posts Attachment(s) Slope detection of broadcast FM?

[ Go to pageGo to page: 1, 2 ]

928GTS

21

2382

Aug Fri 13, 2021 11:47 pm

ACORNVALVE View the latest post

No unread posts 12au7 sw regen.

jimbob

11

1671

Aug Tue 10, 2021 2:28 pm

jimbob View the latest post

No unread posts Attachment(s) First time crystal radio build

[ Go to pageGo to page: 1 ... 4, 5, 6 ]

whfh99

117

8155

Aug Tue 10, 2021 7:05 am

vu2nan View the latest post

No unread posts Attachment(s) Signal tracer build

whfh99

11

798

Aug Sun 08, 2021 4:42 pm

whfh99 View the latest post

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

[ Go to pageGo to page: 1, 2, 3, 4, 5 ]

Jthorusen

82

3635

Aug Sat 07, 2021 11:36 pm

Jthorusen View the latest post

No unread posts Attachment(s) 3mW FM Transmitter based on Franklin Oscillator

Dare4444

0

392

Aug Sat 07, 2021 5:53 pm

Dare4444 View the latest post

No unread posts Talking House 5.0 audio overload and hum/buzz

Kramden66

8

950

Aug Sat 07, 2021 5:14 pm

Tube Radio View the latest post

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

Tube Radio

17

3078

Aug Sat 07, 2021 4:56 pm

Tube Radio View the latest post

No unread posts Attachment(s) Bluetooth, AM Transmitter

criageek

7

986

Aug Sat 07, 2021 2:10 am

criageek View the latest post

No unread posts Attachment(s) simple formulas for calculating tank circuit values?????????

shockedagain75

14

1411

Aug Fri 06, 2021 3:51 pm

KK6GM View the latest post

No unread posts Attachment(s) Antennae question

keith1898

15

849

Aug Tue 03, 2021 4:36 pm

poulsbobill View the latest post

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