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

sv3ora

9

229

May Sun 09, 2021 9:11 pm

BobWeaver View the latest post

No unread posts Attachment(s) 3-channel Am Transmitter 1mhz 3mhz 5mhz $16

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Mike Toon

24

5030

May Sun 09, 2021 5:51 pm

Macrohenry View the latest post

No unread posts 12au7 sw regen.

jimbob

7

478

May Sun 09, 2021 1:26 am

jimbob View the latest post

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

TickingMind

4

149

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

5354

May Fri 07, 2021 5:07 am

hwhall View the latest post

No unread posts Toroid question

jimbob

5

298

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

480

May Wed 05, 2021 6:44 pm

anchorman View the latest post

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

Robert Lozier

19

717

May Wed 05, 2021 3:58 pm

richfair View the latest post

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

jimbob

9

913

May Wed 05, 2021 5:04 am

JGTubeamps View the latest post

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

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whfh99

112

3047

May Mon 03, 2021 9:10 pm

whfh99 View the latest post

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

anchorman

3

199

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

323

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

316

Apr Fri 30, 2021 4:21 am

BikenSwim View the latest post

No unread posts Attachment(s) Another crystal radio find

Mike Toon

7

271

Apr Thu 29, 2021 9:22 pm

Jim Mueller View the latest post

No unread posts Attachment(s) Tube Regen

PNeidlinger

10

487

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

2637

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

270

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

1800

Apr Tue 27, 2021 12:30 am

anchorman View the latest post

No unread posts Part15 sheet beam transmitter

Audioman

7

612

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

405

Apr Fri 23, 2021 12:52 pm

John Bartley View the latest post

No unread posts Not necessarily antique, but close-scanning

kimsleep100

2

278

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

591

Apr Fri 23, 2021 2:03 am

Scott Madison View the latest post

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

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beast775

24

820

Apr Thu 22, 2021 8:06 am

beast775 View the latest post

No unread posts Dual 6c4 triode sw

jimbob

0

199

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

446

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

1258

Apr Mon 12, 2021 2:02 am

richfair View the latest post

No unread posts Attachment(s) Construction 3 tubes Audion 1923, all concert, patent Audion

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yan_sk

27

1955

Apr Sat 10, 2021 9:15 am

yan_sk View the latest post

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

928GTS

9

1761

Apr Thu 08, 2021 12:27 am

shinkuukan View the latest post

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

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richfair

39

2646

Apr Wed 07, 2021 8:19 pm

Dare4444 View the latest post

Moved topic Moved: 42IF transformers source

Rich, W3HWJ

4

458

Apr Thu 08, 2021 5:09 pm

Rich, W3HWJ View the latest post

No unread posts TR SWITCH BUILD

HAMmer

2

381

Apr Fri 02, 2021 1:06 pm

HAMmer View the latest post

No unread posts Slope detection of broadcast FM?

928GTS

15

1002

Apr Thu 01, 2021 5:13 pm

mblack View the latest post

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

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ACORNVALVE

24

1781

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

374

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

1049

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

522

Mar Sat 27, 2021 11:29 am

Dare4444 View the latest post

No unread posts Attachment(s) J310 mixer and SSB

Dare4444

2

430

Mar Fri 26, 2021 3:55 am

Dare4444 View the latest post

No unread posts Attachment(s) Simple DSB transceiver.

Dare4444

10

639

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

9952

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

499

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

679

Mar Sun 21, 2021 5:48 pm

anchorman View the latest post

No unread posts Attachment(s) Tuned loop Am antenna

drworry

17

1290

Mar Thu 18, 2021 4:53 am

tomb123 View the latest post

No unread posts Attachment(s) rf chokes

jimbob

18

1231

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

3584

Mar Thu 18, 2021 12:09 am

ACORNVALVE View the latest post

No unread posts Attachment(s) LM386N MK-XI BCB Transmitter

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35Z5

1035

288157

Mar Sun 14, 2021 11:22 pm

hwhall View the latest post

No unread posts Attachment(s) Help needed CD4053 specs

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Dare4444

81

4066

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

5146

Mar Fri 12, 2021 9:36 pm

j8000 View the latest post

No unread posts Attachment(s) Design Help for 304TL Tube Tesla Coil

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Loose_coupler

24

1463

Mar Thu 11, 2021 3:08 am

Duane B View the latest post

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

Kramden66

3

402

Mar Wed 10, 2021 11:35 pm

Kramden66 View the latest post

No unread posts Attachment(s) Homebrew mono audio amp project - Push Pull 6V6 - 12AU7

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black85vette

72

3114

Mar Tue 09, 2021 4:50 pm

John Bartley View the latest post

Post New Topic  [ 3925 topics ]  Go to page 1, 2, 3, 4, 5 ... 79  Next

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