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No unread posts Greymark 515 A.M. Transmitter full wave rectifier conversion

JukeBoxDenny

5

774

Feb Fri 07, 2020 1:58 am

35Z5 View the latest post

No unread posts Can I turn a mono AM/FM tube radio into FM stereo?

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gmcjetpilot

41

14694

Feb Thu 06, 2020 7:53 pm

westcoastjohn View the latest post

No unread posts Attachment(s) richfair's audio processor for part 15 transmitter

richfair

7

1715

Feb Tue 04, 2020 2:00 am

richfair View the latest post

No unread posts Low Power FM Transmitter Schematic

Dare4444

2

758

Feb Mon 03, 2020 1:52 pm

Dare4444 View the latest post

No unread posts Attachment(s) iPod Amplifier built from 1920's components.

ACORNVALVE

11

1256

Feb Mon 03, 2020 5:07 am

westcoastjohn View the latest post

No unread posts Attachment(s) POWER SUPPLY FOR NATIONAL 1-10A RADIO

ACORNVALVE

2

799

Feb Sun 02, 2020 8:38 am

ACORNVALVE View the latest post

No unread posts Attachment(s) Test battery power 2P2 tube at 6V , 12V 24V

sougisyou

2

752

Feb Sat 01, 2020 6:10 pm

sougisyou View the latest post

No unread posts Attachment(s) richfair's am transmitter

richfair

10

2170

Feb Sat 01, 2020 5:35 pm

richfair View the latest post

No unread posts Analog Devices SSM2167 for AM micro-TX?

Peter Bertini

2

712

Feb Sat 01, 2020 4:02 pm

richfair View the latest post

No unread posts Output transformers in series?

westcoastjohn

15

1951

Feb Sat 01, 2020 1:34 am

radiotechnician View the latest post

No unread posts Attachment(s) Alignment/IF issues

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GoldenAgeOfRadio

25

2261

Feb Sat 01, 2020 1:26 am

Usually Lurking View the latest post

No unread posts Attachment(s) Buffer amp

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Tube Radio

23

3843

Jan Thu 30, 2020 2:56 pm

Tube Radio View the latest post

No unread posts Attachment(s) AM trans, audio distortion related to antenna matching?

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richfair

28

2622

Jan Wed 29, 2020 8:11 pm

richfair View the latest post

No unread posts Another 1mW High Stability FM Transmitter Idea

Dare4444

2

710

Jan Wed 29, 2020 3:55 am

Dare4444 View the latest post

No unread posts Attachment(s) Transmitting Loop antenna for Pantry Transmitters.

ACORNVALVE

2

620

Jan Sun 26, 2020 6:35 am

ACORNVALVE View the latest post

No unread posts Why a grounded center tap on the 6.3 winding?

westcoastjohn

4

782

Jan Sat 25, 2020 11:52 pm

westcoastjohn View the latest post

No unread posts Attachment(s) Motor build

Tube Radio

0

733

Jan Fri 24, 2020 5:57 pm

Tube Radio View the latest post

No unread posts Attachment(s) 6888 AM broadcaster with PCB

[ Go to pageGo to page: 1 ... 5, 6, 7 ]

bill hamre

130

50961

Jan Thu 23, 2020 2:03 am

Macrohenry View the latest post

No unread posts Attachment(s) High Stability FM Transmitter (7 - 10mW) design.

[ Go to pageGo to page: 1, 2 ]

Dare4444

30

2986

Jan Wed 22, 2020 10:53 pm

Dare4444 View the latest post

No unread posts Radio Shack 15-1118 antenna amplifier mod

anbitet66

2

609

Jan Wed 22, 2020 4:04 am

anbitet66 View the latest post

No unread posts Attachment(s) Silver Mica vs. NP0 I am confused

Dare4444

16

1875

Jan Tue 21, 2020 2:51 pm

Dare4444 View the latest post

No unread posts Attachment(s) Amplifier build

Tube Radio

9

946

Jan Tue 21, 2020 1:30 am

Tube Radio View the latest post

No unread posts HV PS FROM MICROWAVE SMPS

Jack Cureton

8

773

Jan Mon 20, 2020 8:16 pm

infomet View the latest post

No unread posts Attachment(s) TRF HOMEBREW RADIO

ACORNVALVE

8

1110

Jan Mon 20, 2020 12:46 am

Colin Ames View the latest post

No unread posts Attachment(s) HOMEBREW FETRON RADIO

ACORNVALVE

8

812

Jan Sat 18, 2020 4:34 pm

pauls.ironhorse View the latest post

No unread posts Attachment(s) first amp to build 60fx5 (2)

j8000

15

1556

Jan Fri 17, 2020 1:59 am

Jim Mueller View the latest post

No unread posts Attachment(s) Vintage broadcasts for antique radios?

audioengr

5

996

Jan Thu 16, 2020 7:47 am

Mike Toon View the latest post

No unread posts Attachment(s) Microcontroller Based Signal Generator

[ Go to pageGo to page: 1 ... 9, 10, 11 ]

louhaskell

213

51034

Jan Thu 16, 2020 6:40 am

BobWeaver View the latest post

No unread posts Attachment(s) PNP transistor for power supply

classicelectronicsguy

7

879

Jan Tue 14, 2020 5:56 pm

classicelectronicsguy View the latest post

No unread posts Attachment(s) 6888 Transmitter stereo to mono input

Mike Toon

16

1311

Jan Tue 14, 2020 2:55 am

Mike Toon View the latest post

No unread posts Need Help With "EasyEDA" PCB Program

transoceanic 8523

9

1245

Jan Sat 11, 2020 5:43 pm

n3uvt View the latest post

No unread posts How To Safely Connect IPhone To Zenith AM Transmitter.

transoceanic 8523

2

495

Jan Sat 11, 2020 5:16 pm

transoceanic 8523 View the latest post

No unread posts Attachment(s) Phase splitter idea

Tube Radio

8

965

Jan Fri 10, 2020 2:01 pm

Tube Radio View the latest post

No unread posts Attachment(s) Ring Choke Converter(RCC) For vacuum tube amplifier?

sougisyou

0

354

Jan Fri 10, 2020 10:49 am

sougisyou View the latest post

No unread posts Attachment(s) Help troubleshooting a a Korg NuTube 6P1 audio input buffer

htolino

9

977

Jan Fri 10, 2020 6:30 am

sougisyou View the latest post

No unread posts Commercial Simulator Now Free

flyboy71

1

513

Jan Thu 09, 2020 2:00 pm

peter scott View the latest post

No unread posts Attachment(s) A single valve 9VDC Am Xmitter

[ Go to pageGo to page: 1, 2 ]

Beach11

20

1839

Jan Wed 08, 2020 10:46 pm

Beach11 View the latest post

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

Tube Radio

6

1510

Jan Wed 08, 2020 1:10 pm

Tube Radio View the latest post

No unread posts Attachment(s) Attempting to build a low voltage tube amplifier

[ Go to pageGo to page: 1, 2 ]

928GTS

35

3170

Jan Sun 05, 2020 10:58 pm

sougisyou View the latest post

No unread posts Attachment(s) Norm's 6888 transmitter with 6C4

Sirtar

18

1688

Jan Sun 05, 2020 4:34 pm

35Z5 View the latest post

No unread posts Attachment(s) Building a radio

Brinks

8

1461

Dec Tue 31, 2019 3:16 am

SkyKing View the latest post

No unread posts Attachment(s) Dekatron spinner circuit and other neon circuits

Tube Radio

4

1207

Dec Fri 27, 2019 11:59 pm

Tube Radio View the latest post

No unread posts Attachment(s) 3 tube superhet

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azenithnut

34

7547

Dec Fri 27, 2019 1:47 pm

azenithnut View the latest post

No unread posts Three different 6888 & 6GY6 xmitt versions...

[ Go to pageGo to page: 1, 2 ]

35Z5

37

27810

Dec Wed 25, 2019 6:08 am

j8000 View the latest post

No unread posts Attachment(s) Unreliable Output - Field Strength Meter

RCAProduction

7

823

Dec Tue 24, 2019 11:09 pm

RCAProduction View the latest post

No unread posts Attachment(s) Hardware Help For Mounting Loopstick Coils

transoceanic 8523

12

1151

Dec Tue 24, 2019 4:22 pm

Peter Bertini View the latest post

This topic is locked, you cannot edit posts or make further replies. Field Strength Meter

RCAProduction

5

716

Dec Mon 23, 2019 6:01 pm

Peter Bertini View the latest post

No unread posts Attachment(s) FM tuner modification

Tube Radio

0

518

Dec Sat 21, 2019 11:03 pm

Tube Radio View the latest post

No unread posts Attachment(s) Old radio

radiorich123

6

1204

Dec Sat 21, 2019 7:44 am

john8750 View the latest post

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

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

pentagrid

55

21032

Dec Thu 19, 2019 10:09 pm

azenithnut View the latest post

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