Hat happen in JS8Call? - Page 1
Forum section: electronics / rf-microwave

author: Lord of nothing
author_rank: Super Contributor
timestamp: September 10, 2019, 03:57:39 pm
content: Sorry since I found no Forum or Usergroup about I still ask here.It run 24/7 on my Laptop to receive and Transmit every 2 Hour a a CQ.Today the Waterfall look like this:Why? Whats the problem with?!Thanks

author: PA0PBZ
author_rank: Super Contributor
timestamp: September 10, 2019, 06:05:13 pm
content: Looks like one of your neighbors bought a phone charger on AliExpress.

author: xrunner
author_rank: Super Contributor
timestamp: September 10, 2019, 06:33:16 pm
content: Quote from: Lord of nothing on September 10, 2019, 03:57:39 pmI'm very familiar with FT8 and WSJT-X on the ham bands -What band were you on?Did you try another band - what happened?What happened when you tuned the radio a little on the band you show - did the problem continue to show there?What do you hear on the radio i.e. is this just an artifact of the computer processing.Not very much info to go on.

author: Lord of nothing
author_rank: Super Contributor
timestamp: September 10, 2019, 06:40:40 pm
content: QuoteCBQuoteThere is just the Channel I use to communicate with other People.QuoteI cant get there that easy to play around.Its directly under the Roof and I must crawl to it.QuoteNothing I cant get there now.

author: Lord of nothing
author_rank: Super Contributor
timestamp: September 11, 2019, 05:30:57 pm
content: Today it look normal:

author: PA0PBZ
author_rank: Super Contributor
timestamp: September 11, 2019, 05:41:41 pm
content: As I said, probably broadband interference from a bad designed switching power supply, it will come and go until you hunt it down. Just take a portable radio and when you find the source let the owner hear the sound and tell them that it is a potential fire hazard, that always works for me

author: Lord of nothing
author_rank: Super Contributor
timestamp: September 11, 2019, 06:12:11 pm
content: Well there is an Apartment building across the Street.And our neighbour have a House to. My Antenna is on the Rooftop.So how to locate the noise?

author: janoc
author_rank: Super Contributor
timestamp: September 11, 2019, 06:46:51 pm
content: Ever heard about directional antennas and triangulation?

author: xrunner
author_rank: Super Contributor
timestamp: September 11, 2019, 07:08:34 pm
content: Quote from: Lord of nothing on September 11, 2019, 06:12:11 pmThe bands are spaced 137.5 or 157 Hz apart - depending on how you line up the markings on the graph with the bands. Do those frequencies mean anything in your area? I do not know.

author: Lord of nothing
author_rank: Super Contributor
timestamp: September 11, 2019, 07:10:07 pm
content: QuoteSure the are not Permit on CB here.QuoteMe to.I dont know anything. That weird think show up in a while.

author: borjam
author_rank: Unknown
timestamp: September 12, 2019, 08:43:28 am
content: Quote from: Lord of nothing on September 11, 2019, 07:10:07 pmYou're wrongIfyou use it just for reception there will be no trouble at all. They are not allowed for transmission. For reception you can do whatever you wish, even building a 100 m diameter parabolic antennaI would recommend getting a short wave radio with CB coverage, even better if it has a RF gain control. For example the Sony ICF-SW7600GR if you can find one; I think it's discontinued.It can also be a fun project to build a loop antenna for it, similar to those used for fox hunting.https://www.everythinghamradio.com/2014/07/fox-hunting/So, if using the Sony receiver, walk around your place using the attenuator to help you locate the spot where the signal is strongest.

author: Lord of nothing
author_rank: Super Contributor
timestamp: September 12, 2019, 09:12:28 am
content: QuoteWhich one have NFM on the CB Freq?I was looking for the Tecsun the dont have NFM. The same I looking for a Radio who support atleast 11khz SSB on the Radio Bands to Pipe it into my Laptop for Digi Radio.Quotewhere? On the Street?

author: borjam
author_rank: Unknown
timestamp: September 12, 2019, 09:30:57 am
content: Quote from: Lord of nothing on September 12, 2019, 09:12:28 amIf hunting for noise you don't need NFM. Actually you don't want NFM, AM or SSB are much better for that.And yes, not that you mention it, the Tecsun PL-360 or, if you want SSB, PL-365 can be good for this.Quotewhere? On the Street?Your place, the street...

author: Lord of nothing
author_rank: Super Contributor
timestamp: September 12, 2019, 09:35:30 am
content: The CB Antenna is on the Roof so how should I receive anything down on the Street?I have a Handhelt CB Radio but the Audio Ports are rubbish and got broken.

author: borjam
author_rank: Unknown
timestamp: September 12, 2019, 09:41:30 am
content: Quote from: Lord of nothing on September 12, 2019, 09:35:30 amYou want to hunt for an interference source, right?That's the point for the portable receiver and moving close to the interference source in order to locate it.

author: Lord of nothing
author_rank: Super Contributor
timestamp: September 12, 2019, 10:46:04 am
content: Since the Antenna is on the Rooftop and I am on the Ground how should the work?

author: janoc
author_rank: Super Contributor
timestamp: September 12, 2019, 03:35:40 pm
content: Quote from: Lord of nothing on September 11, 2019, 07:10:07 pmSince whenyoucare about legal issues around your radio experiments ...As said above, if you use the antenna only for receiving and don't transmit into it, there is no problem. It may not be technically legal (depends how Austrain law is written in this regard - whether it bans directional antennas as such or proscribes only radiated power above a certain limit) but since you aren't going to cause any interference with a receiver (ok, don't use a regen!), the chances of having problems with the authorities are slim.Or simply write a complaint to the local regulator about the wideband interference. They may not care about CB but they certainly will about e.g. airband or broadcast bands that are nearby.

author: janoc
author_rank: Super Contributor
timestamp: September 12, 2019, 03:39:13 pm
content: Quote from: Lord of nothing on September 12, 2019, 10:46:04 amEver heard about a "rubber duck" antenna? Or, much better, build that loop mentioned above because a loop is directional. Heck, even an untuned piece of wire stuck into the antenna jack may work - you aren't looking for the highest efficiency and lowest SWR here.

author: Lord of nothing
author_rank: Super Contributor
timestamp: September 13, 2019, 12:06:55 pm
content: Sure but how show I find someone who jamm the CB Band when the Apartment buildings are in the Grass.

author: janoc
author_rank: Super Contributor
timestamp: September 13, 2019, 03:14:49 pm
content: Quote from: Lord of nothing on September 13, 2019, 12:06:55 pmYou walk around withyour portable radio with a portable antenna attached(e.g. a whip, rubber duck, piece of wire etc., forget your rooftop antenna) and take measurements of the signal strength.If you have a directional antenna (e.g. a handheld loop - easy to DIY), you can take direction measurements from two (better more) places and draw lines on a map to see where they intersect - that's where your source of interference is. Directional antenna is preferable, because it is much more accurate and faster method than homing on the source using only the noise intensity.Not sure what is so difficult to understand on this.If your portable radio is unable to handle this, get an RTL-SDR dongle, USB OTG cable and plug it into your phone/tablet. There is software for it for Android too.

author: Lord of nothing
author_rank: Super Contributor
timestamp: September 13, 2019, 03:27:19 pm
content: I guess my Antenna pick up Signals from far away up to.Today I havent any Problems. I see that weird stuff from time to time.And even when I know the Area what should I do? The Gov ignore it.

author: janoc
author_rank: Super Contributor
timestamp: September 14, 2019, 10:49:54 am
content: Quote from: Lord of nothing on September 13, 2019, 03:27:19 pmDid you actually try to report it? Or is that only your impression? I feel that you are more keen to complain here and wait for some magic solution to be proposed than actually do much about the problem yourself.

author: Lord of nothing
author_rank: Super Contributor
timestamp: September 14, 2019, 06:24:09 pm
content: QuoteNope a friend of mine who can watch Cable TV with a USB Dongle and a pice of wire because some idiotthinka proper shielding is not required.What does the Authorise did? Nothing...

author: janoc
author_rank: Super Contributor
timestamp: September 14, 2019, 08:02:38 pm
content: Quote from: Lord of nothing on September 14, 2019, 06:24:09 pmIf you don't report it then really nothing. Regulators can't run the triangulation vans over every street all the time on the off-chance that they catch something.If you report interference, they will go after it, it is their job. Ask any HAM radio operator who got problems because a neighbor complained about interference on their TV or an old junker radio. It is an eternal fight. Or that family that got fined because their crappy baby monitor caused interference at the nearby airport frequency.Of course, you can also sit on your backside, complain about how the authorities do nothing and hope it goes away by itself ...

author: Lord of nothing
author_rank: Super Contributor
timestamp: September 15, 2019, 12:43:43 pm
content: QuoteEverything who is no Commercial the ignore it in fact.QuoteWhen the say no you cant enforce it. Maybe with a Lawyer. Trust me People sue the Gov. for more Serious thinks and loose the Trial because nobody in the Chain will be guilty.

author: janoc
author_rank: Super Contributor
timestamp: September 15, 2019, 05:21:56 pm
content: So you didn't try it but you know already that it won't work. OK. Good luck, there is no point in wasting time with you here, since you don't want to actually do anything about it, only to complain/rant.

author: borjam
author_rank: Unknown
timestamp: September 15, 2019, 06:50:27 pm
content: Quote from: Lord of nothing on September 13, 2019, 03:27:19 pmRead my messagesI mentioned one or two magical words: Attenuator and/or "RF gain"

author: Lord of nothing
author_rank: Super Contributor
timestamp: September 15, 2019, 06:56:41 pm
content: QuoteI do not know what the Radio internally do.