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No unread posts Attachment(s) Anyone have Tom Guests vibrator schematic from long ago?

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tbone8

70

11818

Mar Sun 01, 2020 1:50 pm

ACORNVALVE View the latest post

No unread posts Variable Cap Connection

n1chp

6

803

Feb Fri 28, 2020 12:42 am

Chas View the latest post

No unread posts Line level volume control for subwoofer

TJM70

9

778

Feb Fri 28, 2020 12:22 am

Macrohenry View the latest post

No unread posts Attachment(s) Low pass filter addition

Tube Radio

4

808

Feb Mon 24, 2020 5:04 pm

Tube Radio View the latest post

No unread posts Attachment(s) Radio Parts Substitutes

Motorola1

8

1020

Feb Mon 24, 2020 4:53 pm

mblack View the latest post

No unread posts Attachment(s) voltage tripler / transformer orientation and hum

breadbox

2

806

Feb Sun 23, 2020 5:37 pm

Scott Madison View the latest post

No unread posts Attachment(s) Home brew signal tracer circuit questions

Wrenchtwister

2

980

Feb Sun 23, 2020 5:33 pm

Tom Bavis View the latest post

No unread posts VR Tubes in Parallel?

Yeti575

8

1124

Feb Sat 22, 2020 10:10 pm

N0BST View the latest post

No unread posts Turret strip sources needed

N0BST

3

879

Feb Sat 22, 2020 10:02 pm

N0BST View the latest post

No unread posts Attachment(s) Time delay relay modification

Tube Radio

6

1216

Feb Thu 20, 2020 12:20 pm

Tube Radio View the latest post

No unread posts Attachment(s) Help create a simple TI904 audio preamp?

Pbpix

13

1228

Feb Thu 20, 2020 7:44 am

Pbpix View the latest post

No unread posts Attachment(s) best sw antenna

kzsteve

14

2009

Feb Thu 20, 2020 4:04 am

Robert White View the latest post

No unread posts Attachment(s) AM Transmitter

G.Brock

10

1877

Feb Tue 18, 2020 2:54 am

ACORNVALVE View the latest post

No unread posts Attachment(s) 4mW High Stability FM TX (New Design)

Dare4444

5

947

Feb Tue 18, 2020 1:17 am

Dare4444 View the latest post

No unread posts Attachment(s) Boy's Book of Crystal Sets - PDF file

John Bartley

13

1344

Feb Mon 17, 2020 6:34 pm

Rich, W3HWJ View the latest post

No unread posts Ekeradio FM radio kit ?

Hue Miller

7

1169

Feb Sun 16, 2020 5:53 am

Usually Lurking View the latest post

No unread posts Anyone build any of these kits?

audioengr

3

1123

Feb Sun 16, 2020 4:46 am

fifties View the latest post

No unread posts Attachment(s) Chinese AM Transmitter board analysis

audioengr

11

1171

Feb Fri 14, 2020 6:52 pm

Tube Radio View the latest post

No unread posts Bill Hamre - 6LE8 Transmitter kit

JukeBoxDenny

4

920

Feb Fri 14, 2020 4:31 am

35Z5 View the latest post

No unread posts Where could I find 3-4 variable capacitors

Tin Omen

6

1100

Feb Thu 13, 2020 6:48 am

fifties View the latest post

No unread posts Attachment(s) Repurpose Grow Light Transformer?

Geoff Fors

7

1085

Feb Wed 12, 2020 8:29 pm

radiotechnician View the latest post

No unread posts Attachment(s) Audio processor for all mono AM pantry transmitters

ACORNVALVE

8

1024

Feb Mon 10, 2020 2:45 pm

ACORNVALVE View the latest post

No unread posts Attachment(s) 2.5 mh choke

jimbob

17

4360

Feb Sun 09, 2020 2:48 pm

radiotechnician View the latest post

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

JukeBoxDenny

5

714

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

14303

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

1611

Feb Tue 04, 2020 2:00 am

richfair View the latest post

No unread posts Low Power FM Transmitter Schematic

Dare4444

2

695

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

1148

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

746

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

662

Feb Sat 01, 2020 6:10 pm

sougisyou View the latest post

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

richfair

10

2039

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

651

Feb Sat 01, 2020 4:02 pm

richfair View the latest post

No unread posts Output transformers in series?

westcoastjohn

15

1765

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

1970

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

3649

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

2442

Jan Wed 29, 2020 8:11 pm

richfair View the latest post

No unread posts Another 1mW High Stability FM Transmitter Idea

Dare4444

2

656

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

574

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

724

Jan Sat 25, 2020 11:52 pm

westcoastjohn View the latest post

No unread posts Attachment(s) Motor build

Tube Radio

0

693

Jan Fri 24, 2020 5:57 pm

Tube Radio View the latest post

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

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bill hamre

130

50012

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

2765

Jan Wed 22, 2020 10:53 pm

Dare4444 View the latest post

No unread posts Attachment(s) Homebrew Electrostatic TV Set.

ACORNVALVE

7

892

Jan Wed 22, 2020 5:44 pm

Norm Johnson View the latest post

No unread posts Radio Shack 15-1118 antenna amplifier mod

anbitet66

2

568

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

1718

Jan Tue 21, 2020 2:51 pm

Dare4444 View the latest post

No unread posts Attachment(s) Amplifier build

Tube Radio

9

868

Jan Tue 21, 2020 1:30 am

Tube Radio View the latest post

No unread posts HV PS FROM MICROWAVE SMPS

Jack Cureton

8

701

Jan Mon 20, 2020 8:16 pm

infomet View the latest post

No unread posts Attachment(s) TRF HOMEBREW RADIO

ACORNVALVE

8

1028

Jan Mon 20, 2020 12:46 am

Colin Ames View the latest post

No unread posts Attachment(s) HOMEBREW FETRON RADIO

ACORNVALVE

8

738

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

1409

Jan Fri 17, 2020 1:59 am

Jim Mueller View the latest post

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