RF, Microwave, Ham Radio

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RoGeorge, TheUnnamedNewbie, Solder_Junkie and 67 Guests are viewing this board.
	where can I get a 145MHz helical filter these days?	bd139	6 Replies 3139 Views	April 27, 2018, 11:11:57 pm by bd139
	(Help need) 433.92MHz Remote controller strange issue	BD1QMP	3 Replies 1018 Views	February 02, 2023, 10:50:36 pm by AFTORF
	What 2m/79/cm combo ham mobile/base radio (no handheld) should I buy « 1 2 All »	Beamin	25 Replies 3165 Views	February 06, 2021, 08:33:29 am by Beamin
	Making a 75' bamboo antenna for HF or 25' horizontal long wire	Beamin	4 Replies 2372 Views	October 26, 2017, 05:15:14 pm by Beamin
	Do they have radio "hide and go seek"?	Beamin	8 Replies 1978 Views	October 01, 2017, 12:45:01 am by David Hess
	visualizing e and h fields	Beamin	6 Replies 1125 Views	August 02, 2019, 09:22:43 pm by radiolistener
	Where can you buy this stuff? SR111 navy VLF radio	Beamin	3 Replies 1424 Views	August 28, 2018, 04:02:39 pm by chris_leyson
	New SDRPlay SAS Spectrum analyzer	Beamin	3 Replies 2316 Views	October 11, 2018, 01:44:31 pm by 9aplus
	Has any one added an amplifier to a broadband (verizon fios ) box?	Beamin	6 Replies 1900 Views	October 26, 2017, 04:48:04 pm by Beamin
	Do they make USB range extenders or wireless USB hubs?	Beamin	11 Replies 2416 Views	October 19, 2018, 03:30:40 pm by David Hess
	Understanding Radiation planes:	Beamin	14 Replies 3090 Views	January 15, 2019, 03:58:29 am by amyk
	Why do weak signals boost strong ones on HF? See explanation below	Beamin	7 Replies 1468 Views	November 14, 2019, 02:03:36 pm by radiolistener
	Why no police scanner for SDR?	Beamin	10 Replies 2662 Views	July 29, 2018, 02:07:44 pm by Lord of nothing
	Would it be possible to make radio controled subs > few feet depth?	Beamin	14 Replies 2388 Views	September 25, 2018, 11:04:06 pm by coppercone2
	How much $ to get into SW with more then 5 watts Tx?	Beamin	20 Replies 3023 Views	October 15, 2018, 06:33:41 pm by coppercone2
	When building antenna do you use the speed of light in vacuum or copper (0.66)	Beamin	9 Replies 7429 Views	June 11, 2018, 02:40:02 pm by Beamin
	Setting up SDR to get rid of FM broadcast ghosts...again?	Beamin	3 Replies 1117 Views	October 13, 2018, 03:33:35 pm by radioactive
	Using an audio amp for amateur ULF radio?	Beamin	12 Replies 1992 Views	June 02, 2019, 10:31:10 pm by David Hess
	How do you get rid of the ghost signal always on the center on the SDRPlay?	Beamin	3 Replies 1639 Views	October 16, 2018, 11:01:04 pm by TheBay
	How would you make this data transmitter wireless?	Beamin	5 Replies 1432 Views	June 14, 2018, 07:05:05 pm by Beamin
	Can you use to SDR's on the samecomputer at the same time?	Beamin	2 Replies 895 Views	March 19, 2018, 06:21:04 pm by Lord of nothing
	Feeding signal generator into IF to get subcarrier radio?	Beamin	5 Replies 1756 Views	September 16, 2018, 02:36:10 pm by Beamin
	Can you make your own wifi router or dedicated data link for the internet? « 1 2 3 All »	Beamin	52 Replies 8925 Views	April 12, 2018, 04:48:19 pm by KD4PBS
	Why am I a better antenna then my antenna? « 1 2 All »	Beamin	36 Replies 4226 Views	December 28, 2019, 08:34:04 am by BrianHG
	Did anyone hear anything strange on SW during the last eclipse?	Beamin	2 Replies 984 Views	May 21, 2018, 09:18:53 am by babysitter
	Intel I7 1.99GHz not fast enough for 2mhz+ bandwidth on HDSDR /SDRPlay?	Beamin	11 Replies 2980 Views	October 27, 2018, 08:07:43 am by RoGeorge
	Is there a way to send HDMI signals wirelessly a short distance?	Beamin	5 Replies 1431 Views	July 23, 2018, 05:58:31 am by a59d1
	If you have the space isn't a full wave legnth best?	Beamin	2 Replies 1215 Views	January 01, 2022, 10:35:32 pm by Whales
	Why does the air hum/buzz around the WWV transmitter site?	Beamin	7 Replies 1862 Views	September 30, 2018, 08:07:17 pm by LaserSteve
	Idea for weak signal decoding at or below noise floor « 1 2 All »	Beamin	27 Replies 4642 Views	November 30, 2018, 02:46:13 am by rhb
	What kind of decoder/encoder will work with these tx/rx modules?	Beamin	6 Replies 2541 Views	November 05, 2017, 04:00:03 pm by JimRemington
	Strange antennas ... ???	Beamin	1 Replies 1296 Views	October 16, 2018, 06:08:24 pm by tkamiya
	Will adding an amp to my SDR offer any benefit?	Beamin	16 Replies 5801 Views	October 15, 2017, 06:04:15 am by Beamin
	What do you think the mystery RF sparks were in MrCarlson's lab?	Beamin	20 Replies 2443 Views	February 07, 2020, 05:52:13 am by David Hess
	Making DX VHF?UHF ham radio contacts by relaying and handing off a message	Beamin	11 Replies 1042 Views	September 13, 2019, 12:24:22 pm by Beamin
	300ohm ladderline dipole antenna fed with ladderline...	Beamin	15 Replies 3904 Views	August 28, 2018, 12:14:00 am by vk6zgo
	Living in an old victorian mansion in the city:VHFUHF or HF HAM? (General class)	Beamin	6 Replies 1141 Views	November 14, 2020, 08:49:24 am by A.Z.
	How to add this amplifier to these tx/rx pairs?	Beamin	9 Replies 1913 Views	November 03, 2017, 12:10:47 pm by Mjolinor
	Any good ways to find out what SW signals you are listening to?	Beamin	4 Replies 1407 Views	December 02, 2018, 12:52:31 am by Beamin
	SW HAM Veterans: how much does the sunspot cycle effect the experience?	Beamin	6 Replies 1281 Views	August 26, 2018, 08:25:46 pm by vk3yedotcom

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