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No unread posts Attachment(s) Replacement for battery TRF audio transformer

JnTX

9

1207

Sep Fri 07, 2018 4:47 pm

A A Kent View the latest post

No unread posts Attachment(s) Solid state transformer

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

Tube Radio

71

2593

Sep Fri 07, 2018 11:55 am

Tube Radio View the latest post

No unread posts Increase gain by increasing B+?

classicelectronicsguy

9

595

Sep Thu 06, 2018 8:16 pm

Usually Lurking View the latest post

No unread posts Attachment(s) Outdoor longwire Antenna need ideas!

[ Go to pageGo to page: 1, 2 ]

radiorich

21

921

Sep Tue 04, 2018 12:14 pm

k9uwa View the latest post

No unread posts 6GY6 transmitter range

Tube Radio

18

828

Sep Tue 04, 2018 2:30 am

Tube Radio View the latest post

No unread posts Attachment(s) Simple HF Amplifier

avictor

2

435

Sep Mon 03, 2018 9:22 pm

avictor View the latest post

No unread posts Attachment(s) Vintage one tube radio ?

pauls.ironhorse

17

906

Sep Sat 01, 2018 2:50 am

Chas View the latest post

No unread posts Attachment(s) AM PLL Transmitter kit

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

Ed in SoDak

41

2264

Aug Fri 31, 2018 3:05 am

Tube Radio View the latest post

No unread posts Attachment(s) Full schematic of 35Z5 LM386 transmitter

HalliFan

11

706

Aug Wed 29, 2018 5:03 pm

Mike Toon View the latest post

No unread posts Attachment(s) SW Converter for AM Radio

Motorola1

2

429

Aug Wed 29, 2018 5:14 am

Motorola1 View the latest post

No unread posts Attachment(s) Multiplying Battery Voltage? (DC Step-Up, 1.5 to 60v)

RCAProduction

13

678

Aug Tue 28, 2018 6:13 pm

Rich, W3HWJ View the latest post

No unread posts 90 mhz fm transmitter schematic and prototype pic

Dare4444

11

592

Aug Mon 27, 2018 5:09 pm

Macrohenry View the latest post

No unread posts Homebrew tube tester on eBay

keenmaster486

4

467

Aug Sat 25, 2018 12:44 am

Barry H Bennett View the latest post

No unread posts Attachment(s) AM transmitter prototype

[ Go to pageGo to page: 1, 2 ]

Erich Loepke

31

4412

Aug Fri 24, 2018 11:52 pm

Erich Loepke View the latest post

No unread posts Scope clock build

Tube Radio

2

487

Aug Sun 19, 2018 7:52 pm

Tube Radio View the latest post

No unread posts R-390 Audio mod question

Tube Radio

3

530

Aug Sun 19, 2018 3:27 am

Sparky85 View the latest post

No unread posts Attachment(s) Pink Lizard: A Parts Goldmine!

Rich, W3HWJ

11

1609

Aug Wed 15, 2018 11:07 am

aurel View the latest post

No unread posts Attachment(s) 2 Tube Regen Receiver Questions

KA8GEF

9

759

Aug Mon 13, 2018 12:47 pm

KA8GEF View the latest post

No unread posts Attachment(s) Building an AM transmitter for part 15 - longwave?

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

keenmaster486

47

2450

Aug Sun 12, 2018 7:19 pm

keenmaster486 View the latest post

No unread posts Attachment(s) Two-Tube AM Transmitter (6AB4 & 6888)

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

Blustar1

50

11071

Aug Sat 11, 2018 3:58 am

harleythatcher View the latest post

No unread posts Attachment(s) Westinghouse H122 has new power supply.

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

westcoastjohn

55

6896

Aug Thu 09, 2018 9:19 pm

westcoastjohn View the latest post

No unread posts Attachment(s) BC-455A resistor question

Tube Radio

3

367

Aug Thu 09, 2018 11:56 am

Tube Radio View the latest post

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

[ Go to pageGo to page: 1, 2 ]

JnTX

26

1977

Aug Wed 08, 2018 7:08 pm

Tube Radio View the latest post

No unread posts Attachment(s) Scope clock

[ Go to pageGo to page: 1, 2 ]

Tube Radio

24

1767

Aug Wed 08, 2018 2:48 am

Tube Radio View the latest post

No unread posts Another scope clock build

Tube Radio

0

207

Aug Wed 08, 2018 1:14 am

Tube Radio View the latest post

No unread posts Attachment(s) Another "Variac" Build

COM-NAV-ECM

1

432

Aug Sun 05, 2018 8:48 pm

N2LXM View the latest post

No unread posts Attachment(s) Project Problem

Gary T. Lane

8

790

Aug Fri 03, 2018 7:04 pm

fifties View the latest post

No unread posts Attachment(s) 300B PP Parallel amplifier

archeus68

0

275

Aug Fri 03, 2018 1:36 am

archeus68 View the latest post

No unread posts Scope clock in a TV

Tube Radio

10

733

Aug Wed 01, 2018 11:46 am

Tube Radio View the latest post

No unread posts Attachment(s) Early complex crystal set circa 1922

albresee

2

430

Jul Mon 30, 2018 5:33 pm

albresee View the latest post

No unread posts Attachment(s) regenerative detectors

avictor

5

645

Jul Thu 26, 2018 6:06 pm

avictor View the latest post

No unread posts Attachment(s) detector differences

forumuser

7

503

Jul Tue 24, 2018 7:22 pm

forumuser View the latest post

No unread posts Attachment(s) CRT circuit question

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

Tube Radio

46

2639

Jul Wed 18, 2018 4:01 am

Tube Radio View the latest post

No unread posts Attachment(s) 117L7 and OT mismatch question

breadbox

12

906

Jul Mon 16, 2018 2:03 pm

Tube Radio View the latest post

No unread posts Attachment(s) AM transmitter pushpull 2n3904 stage Schematic

Dare4444

13

983

Jul Mon 09, 2018 10:05 pm

Peter Bertini View the latest post

No unread posts 1mW XTAL FM Transmitter

Dare4444

0

334

Jul Thu 05, 2018 12:28 am

Dare4444 View the latest post

No unread posts XTAL controlled FM Transmitter idea + schematic

Dare4444

5

606

Jul Tue 03, 2018 3:47 pm

Dare4444 View the latest post

No unread posts Attachment(s) What Is This??

jonboy55

16

1960

Jul Sun 01, 2018 3:30 pm

Tim Tress View the latest post

No unread posts Attachment(s) DIY 9 volt battery charger and indicator.

transoceanic 8523

3

575

Jun Tue 26, 2018 6:29 am

transoceanic 8523 View the latest post

No unread posts Attachment(s) low power 10 meter linear amp

[ Go to pageGo to page: 1, 2 ]

forumuser

27

1379

Jun Sat 23, 2018 3:54 am

forumuser View the latest post

No unread posts 6GY6 transmitter question

Tube Radio

12

781

Jun Sat 23, 2018 2:13 am

Tube Radio View the latest post

No unread posts Experimental 1 MHz AM Transmitter

Dare4444

5

663

Jun Fri 22, 2018 5:08 pm

Dare4444 View the latest post

No unread posts 102.4 MHZ PLL FM TX Schematic

Dare4444

1

361

Jun Fri 22, 2018 12:31 am

Macrohenry View the latest post

No unread posts Determining 1st and 2nd IF transforners

dr pepper

3

634

Jun Tue 19, 2018 12:07 am

Chris108 View the latest post

No unread posts 10 meter coil info.

Gary T. Lane

7

681

Jun Fri 15, 2018 5:32 pm

NW2K View the latest post

No unread posts Attachment(s) Depression Po' boy homebrew shortwave receiver

wazz

8

1038

Jun Mon 11, 2018 3:16 am

wazz View the latest post

No unread posts Minimal Build AM Transmitter, Muntzed

Mike Toon

8

1186

Jun Sat 09, 2018 12:20 am

fifties View the latest post

No unread posts Attachment(s) XY Scope Project

[ Go to pageGo to page: 1, 2 ]

kc5gym

24

1916

Jun Fri 08, 2018 7:04 pm

kc5gym View the latest post

No unread posts Anybody use those high voltage rechargeable batteries?

Dennis Banker

4

568

Jun Fri 08, 2018 6:19 pm

upsss View the latest post

No unread posts Attachment(s) The MK484 as a high quality AM tuner.

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

Felix

77

13806

Jun Fri 08, 2018 11:23 am

Tube Radio View the latest post

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