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No unread posts Attachment(s) LM317 regulator design

mhamiton

13

1539

Jun Sat 19, 2021 3:25 am

Jthorusen View the latest post

No unread posts Attachment(s) Update - My Vacuum Tube Frequency Synthesizer

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BobWeaver

20

2742

Jun Fri 18, 2021 10:02 pm

mblack View the latest post

No unread posts Attachment(s) This $1 piezo disc ROCKS! as a horn driver.

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Robert Lozier

34

3001

Jun Fri 18, 2021 4:09 am

hwhall View the latest post

No unread posts Attachment(s) converting an old radio into Bluetooth speaker with FM radio

rocky22

17

1792

Jun Sat 12, 2021 2:20 pm

jimsp View the latest post

No unread posts Attachment(s) UPDATE #2: RC-30 Manual television Cabinet Almost done!

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Mr. Highlander

46

9078

Jun Thu 10, 2021 12:25 am

tym View the latest post

Moved topic Attachment(s) Moved: Is this called a machinist adjustable square ?

pauls.ironhorse

5

801

Jun Tue 08, 2021 2:57 pm

pauls.ironhorse View the latest post

No unread posts Magnetic loop antenna to regen interface?

Sparks62

2

520

Jun Thu 03, 2021 11:35 pm

Sparks62 View the latest post

No unread posts New winner for impossible translation in transistor kit?

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Robert Lozier

23

2081

Jun Thu 03, 2021 2:47 pm

Robert Lozier View the latest post

No unread posts PCB hole sizes to be ordered

Macrohenry

6

845

May Sat 29, 2021 4:48 am

Macrohenry View the latest post

Moved topic Moved: An Afternoon with John Rollins, W1FPZ

AE2EA

0

393

May Fri 28, 2021 2:57 pm

AE2EA View the latest post

No unread posts Attachment(s) Constant current power supply

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Tube Radio

23

5544

May Mon 24, 2021 1:56 am

Tube Radio View the latest post

No unread posts Attachment(s) Another crystal radio find

Mike Toon

9

1233

May Mon 17, 2021 5:02 pm

Rich, W3HWJ View the latest post

Moved topic Attachment(s) Moved: 3-channel Am Transmitter 1mhz 3mhz 5mhz $16

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Mike Toon

46

8692

Jun Sat 19, 2021 5:01 pm

ZenithRadios View the latest post

No unread posts "Hum" noise in transmitter When listening to it on AM radio

sv3ora

9

986

May Sun 09, 2021 9:11 pm

BobWeaver View the latest post

No unread posts Vectronics 1290K, more trouble than it is worth? Help!

TickingMind

4

630

May Fri 07, 2021 5:24 pm

richfair View the latest post

No unread posts Attachment(s) Antique Wireless Assoc. AM tx board

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Rich, W3HWJ

82

9027

May Fri 07, 2021 5:07 am

hwhall View the latest post

No unread posts Toroid question

jimbob

5

743

May Thu 06, 2021 1:45 pm

ACORNVALVE View the latest post

No unread posts Attachment(s) single tube 6gy6 bcb transmitter

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anchorman

25

1769

May Wed 05, 2021 6:44 pm

anchorman View the latest post

No unread posts Attachment(s) Wouldn't it be nice

jimbob

9

1622

May Wed 05, 2021 5:04 am

JGTubeamps View the latest post

No unread posts Battery eliminator for A, B, C batteries.

anchorman

3

595

May Sun 02, 2021 11:24 pm

Chas View the latest post

No unread posts Help designing 6sj7/6sn7 input stage for 6v6 PP amplifier

Michiganamps

4

674

May Sat 01, 2021 1:50 am

Mr. Detrola View the latest post

No unread posts Attachment(s) PA output transformer for HiFi application?

classicelectronicsguy

10

844

Apr Fri 30, 2021 4:21 am

BikenSwim View the latest post

No unread posts Attachment(s) Tube Regen

PNeidlinger

10

1139

Apr Thu 29, 2021 9:51 am

ACORNVALVE View the latest post

No unread posts Attachment(s) [Solved] Help needed with IF stage oscillation/motorboatin

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szoftveres

27

3626

Apr Wed 28, 2021 10:34 pm

ACORNVALVE View the latest post

No unread posts 12AH8 as regen amplifier working at low voltage

dr pepper

6

719

Apr Wed 28, 2021 2:06 pm

dr pepper View the latest post

No unread posts Attachment(s) 6GY6 transmitter in a computer power supply box

N0BST

14

2813

Apr Tue 27, 2021 12:30 am

anchorman View the latest post

No unread posts Part15 sheet beam transmitter

Audioman

7

1252

Apr Sat 24, 2021 4:23 pm

mblack View the latest post

No unread posts Attachment(s) Using turrent boards in HIFI amp

Michiganamps

11

915

Apr Fri 23, 2021 12:52 pm

John Bartley View the latest post

No unread posts Not necessarily antique, but close-scanning

kimsleep100

2

607

Apr Fri 23, 2021 4:19 am

Macrohenry View the latest post

No unread posts Attachment(s) Pine Board to Chassis Conversion

Loose_coupler

4

944

Apr Fri 23, 2021 2:03 am

Scott Madison View the latest post

No unread posts Dual 6c4 triode sw

jimbob

0

383

Apr Sun 18, 2021 6:14 pm

jimbob View the latest post

No unread posts Attachment(s) Looking for Project: Have PP 5k Pri Output Xfrmr

Greenhorn

7

825

Apr Fri 16, 2021 6:34 pm

BikenSwim View the latest post

No unread posts A New $5 circuit for an AM Modulator and Generator

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louhaskell

21

2106

Apr Mon 12, 2021 2:02 am

richfair View the latest post

No unread posts Attachment(s) Richfair's am transmitter build

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richfair

39

4441

Apr Wed 07, 2021 8:19 pm

Dare4444 View the latest post

Moved topic Moved: 42IF transformers source

Rich, W3HWJ

4

881

Apr Thu 08, 2021 5:09 pm

Rich, W3HWJ View the latest post

No unread posts TR SWITCH BUILD

HAMmer

2

682

Apr Fri 02, 2021 1:06 pm

HAMmer View the latest post

No unread posts Attachment(s) Historical Radio Society AM TX

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ACORNVALVE

24

2962

Mar Tue 30, 2021 8:39 pm

bb.odin View the latest post

No unread posts Attachment(s) 365 pf alternative - can you translate this listing?

Robert Lozier

1

594

Mar Tue 30, 2021 12:01 am

egg View the latest post

No unread posts Attachment(s) Most sensitive(power efficient) small loudspeaker in 1930s

Robert Lozier

15

1764

Mar Sun 28, 2021 2:57 am

Robert Lozier View the latest post

No unread posts Attachment(s) Crystal based AM Transmitter with 2n7000

Dare4444

2

822

Mar Sat 27, 2021 11:29 am

Dare4444 View the latest post

No unread posts Attachment(s) J310 mixer and SSB

Dare4444

2

647

Mar Fri 26, 2021 3:55 am

Dare4444 View the latest post

No unread posts Attachment(s) Simple DSB transceiver.

Dare4444

10

1211

Mar Tue 23, 2021 7:12 pm

Dare4444 View the latest post

No unread posts Attachment(s) AM transmitter prototype

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Erich Loepke

32

11486

Mar Tue 23, 2021 4:54 pm

ai6vx View the latest post

No unread posts Attachment(s) CD4007 single chip 3-21 MHz DC RX

Dare4444

13

966

Mar Tue 23, 2021 6:38 am

Dare4444 View the latest post

No unread posts Attachment(s) How to simulate basic radio circuits

Radiator

13

1265

Mar Sun 21, 2021 5:48 pm

anchorman View the latest post

No unread posts Attachment(s) Tuned loop Am antenna

drworry

17

2427

Mar Thu 18, 2021 4:53 am

tomb123 View the latest post

No unread posts Attachment(s) rf chokes

jimbob

18

2328

Mar Thu 18, 2021 4:47 am

Dare4444 View the latest post

No unread posts Attachment(s) 3RP1 Based TV Set

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IlikeTech

108

5737

Mar Thu 18, 2021 12:09 am

ACORNVALVE View the latest post

No unread posts Attachment(s) Help needed CD4053 specs

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Dare4444

81

6796

Mar Fri 12, 2021 11:20 pm

Dare4444 View the latest post

No unread posts Attachment(s) first amp to build 6v6 with 6sn7

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j8000

40

6482

Mar Fri 12, 2021 9:36 pm

j8000 View the latest post

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