Re: [Repeater-Builder] Noise on UHF
Sent from my BlackBerry® smartphone -Original Message- From: Ralph S. Turk w7...@comcast.net Date: Wed, 17 Jun 2009 23:16:23 To: Repeater-Builder@yahoogroups.com Cc: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Noise on UHF Hi All Just be thankful that the Military is still using 420-450mhz. We share it and if they stop using it, Washington will sell it for something. We get a lot radar and radio location data every day and night. We live with it. Have been moving our links from 420 to 2.4GHz ham band. Ralph, W7HSG - Original Message - From: AJ aj.grant...@gmail.com To: Repeater-Builder@yahoogroups.com Sent: Wednesday, June 17, 2009 2:17:29 PM GMT -07:00 U.S. Mountain Time (Arizona) Subject: Re: [Repeater-Builder] Noise on UHF Same question - are you within line of sight of any military installations? We had a lovely buzz saw sound happen about 6 months ago interferring with some sattelite downlink equipment here in the valley and would wipe our UHF repeater up on the hill... It primarily happened between 5 and 10 pm local time... Eventually tracked it down to electronic warfare equipment onboard visiting aircraft at the air force base about 50 miles to the south... As soon as the wargames were over, the interference to both the sattelite downlink (Fox News SD in this case) and the UHF repeaters up on the hill went away. Haven't had an issue since. On Wed, Jun 17, 2009 at 2:47 PM, Adam Feuer feu...@optonline.net wrote: Yes, I'm getting it in Rockland County, NY on one of my UHF machines. I'm told that the noise I'm hearing, which I only hear every blue moon, is some sort of military radar. Adam N2ACF Chuck Kelsey wrote: Is anyone hearing a strange noise (buzz/whine) on UHF? Chuck WB2EDV Yahoo! Groups Links
Re: [Repeater-Builder] Noise on UHF
On Jun 18, 2009, at 8:09 AM, dmur...@verizon.net wrote: The buzz you are hearing on 440 is from airborn radar. I know on the B52s that they turn on ECM (Electronic Counter Measures) when leaving the coast and when returning. ECM doesn't transmit unless it's attempting to jam incoming bad things. Otherwise, ECM is a passive system, listening. If you'd said they turn on active RADAR, the comment would have made sense, and I'd agree with that. Probably a defensive flying endeavour to help them see and avoid the insane amounts of traffic at the coast. Always a nice option for the PLT if you have active radar and can see other people trying to run into you, but they're talking to ATC also... just a secondary information source. More electronic eyeballs outside the cockpit... Ironically, this indirectly means that UHF Amateur receivers apparently are an excellent way to know when certain military RADAR systems go active, and that in and of itself is a bit of an intelligence coup, if you think about it. Buy an HT if you're wondering if the big iron is up and active... :-) Amateurs on the coasts near Naval bases regularly receive unintentional interference from Navy RADAR, inland it's usually aircraft (think about the ERP/power requirements to hear OFF-FREQUENCY UHF noise on your Amateur Repeater... whew... those boys have some power on board!) or fixed installations, and can be DF'ed (if a ground source) right to the antenna. Of course, not all of it is off- frequency... depending on the RADAR or Comm system. A number of Colorado Amateurs DF'ed the EPLRS noise at Buckley AFB right up to the antenna (with appropriate permission to be on-base at the time) and later some careful negotiation with the system manager included pointing out that if he didn't notch out the Amateur repeater inputs (which the system CAN do, since it's so frequency agile), he was basically giving away the dates/times of active training missions to anyone with an Amateur UHF HT talking on a repeater in the area, along with just general begging... I hear that this is very location dependent, and probably also had to do quite a bit with the fact that one of the Amateurs talking to them was a RADAR/SIGINT expert from a past life... I think. He won't say. Hah... those of you who've done those jobs get it when I joke about that. Anyway, haven't had any EPLRS noise now for many years here in the Denver area... I'm sure one can spin the dial and still hear it in other sections of the band during missions, but not on the repeater inputs... system manager here was SMART and got it. Active transmitters means others know something useful about what you're up to... -- Nate Duehr, WY0X n...@natetech.com http://facebook.com/denverpilot http://twitter.com/denverpilot
Re: [Repeater-Builder] Noise on UHF
I can always tell when the AWACS are flying near our area Our C-band digital satellite signals crap out every ten seconds or so... My boss keeps telling me to fix the uplink transmitter I keep telling him to buy the bandpass filter Sorry for the off-topic... I STILL am looking for a good-FREE software to link two sites via ROIP. I have a local LAN with a microwave setup between sites about 2 miles apart. Receiver one end, transmitter the other. Need to send COR and audio over ROIP to control TX on the other end. Seems like it aught to be simple... -Jon - Original Message - From: Nate Duehr To: Repeater-Builder@yahoogroups.com Sent: Thursday, June 18, 2009 11:41 AM Subject: Re: [Repeater-Builder] Noise on UHF On Jun 18, 2009, at 8:09 AM, dmur...@verizon.net wrote: The buzz you are hearing on 440 is from airborn radar. I know on the B52s that they turn on ECM (Electronic Counter Measures) when leaving the coast and when returning. ECM doesn't transmit unless it's attempting to jam incoming bad things. Otherwise, ECM is a passive system, listening. If you'd said they turn on active RADAR, the comment would have made sense, and I'd agree with that. Probably a defensive flying endeavour to help them see and avoid the insane amounts of traffic at the coast. Always a nice option for the PLT if you have active radar and can see other people trying to run into you, but they're talking to ATC also... just a secondary information source. More electronic eyeballs outside the cockpit... Ironically, this indirectly means that UHF Amateur receivers apparently are an excellent way to know when certain military RADAR systems go active, and that in and of itself is a bit of an intelligence coup, if you think about it. Buy an HT if you're wondering if the big iron is up and active... :-) Amateurs on the coasts near Naval bases regularly receive unintentional interference from Navy RADAR, inland it's usually aircraft (think about the ERP/power requirements to hear OFF-FREQUENCY UHF noise on your Amateur Repeater... whew... those boys have some power on board!) or fixed installations, and can be DF'ed (if a ground source) right to the antenna. Of course, not all of it is off- frequency... depending on the RADAR or Comm system. A number of Colorado Amateurs DF'ed the EPLRS noise at Buckley AFB right up to the antenna (with appropriate permission to be on-base at the time) and later some careful negotiation with the system manager included pointing out that if he didn't notch out the Amateur repeater inputs (which the system CAN do, since it's so frequency agile), he was basically giving away the dates/times of active training missions to anyone with an Amateur UHF HT talking on a repeater in the area, along with just general begging... I hear that this is very location dependent, and probably also had to do quite a bit with the fact that one of the Amateurs talking to them was a RADAR/SIGINT expert from a past life... I think. He won't say. Hah... those of you who've done those jobs get it when I joke about that. Anyway, haven't had any EPLRS noise now for many years here in the Denver area... I'm sure one can spin the dial and still hear it in other sections of the band during missions, but not on the repeater inputs... system manager here was SMART and got it. Active transmitters means others know something useful about what you're up to... -- Nate Duehr, WY0X n...@natetech.com http://facebook.com/denverpilot http://twitter.com/denverpilot
Re: [Repeater-Builder] Noise on UHF
app_rpt is a possible.. if you have the hardware .. if not the interfaces are pretty reasonable... Doug At 01:27 PM 6/18/2009, you wrote: I can always tell when the AWACS are flying near our area Our C-band digital satellite signals crap out every ten seconds or so... My boss keeps telling me to fix the uplink transmitter I keep telling him to buy the bandpass filter Sorry for the off-topic... I STILL am looking for a good-FREE software to link two sites via ROIP. I have a local LAN with a microwave setup between sites about 2 miles apart. Receiver one end, transmitter the other. Need to send COR and audio over ROIP to control TX on the other end. Seems like it aught to be simple... -Jon
Re: [Repeater-Builder] Noise on UHF
If you're halfway Linux-savvy, Skip WB6YMH's thelinkbox should fit the bill for free and works... http://groups.yahoo.com/group/thelinkbox/ Like all powerful software, it's not plug and play, nor does it run on Windows. (GRIN!) -- Nate Duehr, WY0X n...@natetech.com On Thu, 18 Jun 2009 12:27 -0500, Jon Bivin - WB0VTM wb0...@earthlink.net wrote: I can always tell when the AWACS are flying near our area Our C-band digital satellite signals crap out every ten seconds or so... My boss keeps telling me to fix the uplink transmitter I keep telling him to buy the bandpass filter Sorry for the off-topic... I STILL am looking for a good-FREE software to link two sites via ROIP. I have a local LAN with a microwave setup between sites about 2 miles apart. Receiver one end, transmitter the other. Need to send COR and audio over ROIP to control TX on the other end. Seems like it aught to be simple... -Jon - Original Message - From: [1]Nate Duehr To: [2]repeater-buil...@yahoogroups.com Sent: Thursday, June 18, 2009 11:41 AM Subject: Re: [Repeater-Builder] Noise on UHF On Jun 18, 2009, at 8:09 AM, [3]dmur...@verizon.net wrote: The buzz you are hearing on 440 is from airborn radar. I know on the B52s that they turn on ECM (Electronic Counter Measures) when leaving the coast and when returning. ECM doesn't transmit unless it's attempting to jam incoming bad things. Otherwise, ECM is a passive system, listening. If you'd said they turn on active RADAR, the comment would have made sense, and I'd agree with that. Probably a defensive flying endeavour to help them see and avoid the insane amounts of traffic at the coast. Always a nice option for the PLT if you have active radar and can see other people trying to run into you, but they're talking to ATC also... just a secondary information source. More electronic eyeballs outside the cockpit... Ironically, this indirectly means that UHF Amateur receivers apparently are an excellent way to know when certain military RADAR systems go active, and that in and of itself is a bit of an intelligence coup, if you think about it. Buy an HT if you're wondering if the big iron is up and active... :-) Amateurs on the coasts near Naval bases regularly receive unintentional interference from Navy RADAR, inland it's usually aircraft (think about the ERP/power requirements to hear OFF-FREQUENCY UHF noise on your Amateur Repeater... whew... those boys have some power on board!) or fixed installations, and can be DF'ed (if a ground source) right to the antenna. Of course, not all of it is off- frequency... depending on the RADAR or Comm system. A number of Colorado Amateurs DF'ed the EPLRS noise at Buckley AFB right up to the antenna (with appropriate permission to be on-base at the time) and later some careful negotiation with the system manager included pointing out that if he didn't notch out the Amateur repeater inputs (which the system CAN do, since it's so frequency agile), he was basically giving away the dates/times of active training missions to anyone with an Amateur UHF HT talking on a repeater in the area, along with just general begging... I hear that this is very location dependent, and probably also had to do quite a bit with the fact that one of the Amateurs talking to them was a RADAR/SIGINT expert from a past life... I think. He won't say. Hah... those of you who've done those jobs get it when I joke about that. Anyway, haven't had any EPLRS noise now for many years here in the Denver area... I'm sure one can spin the dial and still hear it in other sections of the band during missions, but not on the repeater inputs... system manager here was SMART and got it. Active transmitters means others know something useful about what you're up to... -- Nate Duehr, WY0X [4]n...@natetech.com [5]http://facebook.com/denverpilot [6]http://twitter.com/denverpilot References 1. mailto:n...@natetech.com 2. mailto:Repeater-Builder@yahoogroups.com 3. mailto:dmur...@verizon.net 4. mailto:nate%40natetech.com 5. http://facebook.com/denverpilot 6. http://twitter.com/denverpilot 7. http://groups.yahoo.com/group/Repeater-Builder/message/92020;_ylc=X3oDMTM1cWExa2FqBF9TAzk3MzU5NzE0BGdycElkAzEwNDE2OARncnBzcElkAzE3MDUwNjMxMDgEbXNnSWQDOTIwNTgEc2VjA2Z0cgRzbGsDdnRwYwRzdGltZQMxMjQ1MzQ2MDY1BHRwY0lkAzkyMDIw 8. http://groups.yahoo.com/group/Repeater-Builder/post;_ylc=X3oDMTJwMzE1aGZiBF9TAzk3MzU5NzE0BGdycElkAzEwNDE2OARncnBzcElkAzE3MDUwNjMxMDgEbXNnSWQDOTIwNTgEc2VjA2Z0cgRzbGsDcnBseQRzdGltZQMxMjQ1MzQ2MDY1?act=replymessageNum=92058 9. http://groups.yahoo.com/group/Repeater-Builder/post;_ylc=X3oDMTJkcjc1cDV1BF9TAzk3MzU5NzE0BGdycElkAzEwNDE2OARncnBzcElkAzE3MDUwNjMxMDgEc2VjA2Z0cgRzbGsDbnRwYwRzdGltZQMxMjQ1MzQ2MDY1 10. http://groups.yahoo.com/group/Repeater-Builder/messages;_ylc=X3oDMTJkbnUzOWYyBF9TAzk3MzU5NzE0BGdycElkAzEwNDE2OARncnBzcElkAzE3MDUwNjMxMDgEc2VjA2Z0cgRzbGsDbXNncwRzdGltZQMxMjQ1MzQ2MDY1 11. http://groups.yahoo.com/group/Repeater-Builder/files;_ylc
Re: [Repeater-Builder] Noise on UHF
lol... I like that one. I actually think the noise is worse today. I am in North Central, PA about 20 miles south of the NY border. Everything cleared up about 7:00pm last night but it started again about 10:00 am this morning... It does sound like radar. I have heard it on other repeaters before but this is the most wide spread I have ever heard it. I was talking to a friend of mine down near Harrisburg who just put up a UHF machine at his house and he was hearing it as well on his UHF machine. No where near as bad as we are though. Corey N3FE On Wed, 17 Jun 2009, Nate Duehr wrote: Yeah, but usually we just call them club members. :-) -- Nate Duehr Sent from my iPhone On Jun 17, 2009, at 14:41, Chuck Kelsey wb2...@roadrunner.com wrote: Is anyone hearing a strange noise (buzz/whine) on UHF? Chuck WB2EDV
RE: [Repeater-Builder] Noise on UHF
Is anyone hearing a strange noise (buzz/whine) on UHF? I have not read all the threads on this , But did this Problem happen just after the Switch over to DTV . I did read somewhere that Problem have been noticed on Some Freqs after the Switch Happy repeater Building Don KA9QJG PS Sorry if this has already been brought up
Re: [Repeater-Builder] Noise on UHF
It may have been military PAVE PAWS if we had an exceptional band opening. Look at Wikipedia for a description. Joe Nate Duehr wrote: On Jun 18, 2009, at 8:09 AM, dmur...@verizon.net wrote: The buzz you are hearing on 440 is from airborn radar. I know on the B52s that they turn on ECM (Electronic Counter Measures) when leaving the coast and when returning.
Re: [Repeater-Builder] Noise on UHF
Years ago, when the president was coming to the area, something was fired up in the Westover Mass air base area. It wiped out UHF spectrum for many miles. Maybe they were testing a jammer for possible use during his visit, or forgot to turn something off. When I worked for Nextel, we had interference near the US Sub base in Groton. It wiped out the cell site in the direction of the base. A call to someone at the base made it stop in about 5 minutes. I never found out what it was. Joe dmur...@verizon.net wrote: I know that all B52s when leaving the coast and returning will sweep the area with radar.
RE: [Repeater-Builder] Noise on UHF
Do a search on the Cisco site for EFI. This will do what you want over an IP link. -Kevin _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Jon Bivin - WB0VTM Sent: Thursday, June 18, 2009 1:27 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Noise on UHF I can always tell when the AWACS are flying near our area Our C-band digital satellite signals crap out every ten seconds or so... My boss keeps telling me to fix the uplink transmitter I keep telling him to buy the bandpass filter Sorry for the off-topic... I STILL am looking for a good-FREE software to link two sites via ROIP. I have a local LAN with a microwave setup between sites about 2 miles apart. Receiver one end, transmitter the other. Need to send COR and audio over ROIP to control TX on the other end. Seems like it aught to be simple... -Jon - Original Message - From: Nate Duehr mailto:n...@natetech.com To: Repeater-Builder@yahoogroups.com Sent: Thursday, June 18, 2009 11:41 AM Subject: Re: [Repeater-Builder] Noise on UHF On Jun 18, 2009, at 8:09 AM, dmur...@verizon. mailto:dmur...@verizon.net net wrote: The buzz you are hearing on 440 is from airborn radar. I know on the B52s that they turn on ECM (Electronic Counter Measures) when leaving the coast and when returning. ECM doesn't transmit unless it's attempting to jam incoming bad things. Otherwise, ECM is a passive system, listening. If you'd said they turn on active RADAR, the comment would have made sense, and I'd agree with that. Probably a defensive flying endeavour to help them see and avoid the insane amounts of traffic at the coast. Always a nice option for the PLT if you have active radar and can see other people trying to run into you, but they're talking to ATC also... just a secondary information source. More electronic eyeballs outside the cockpit... Ironically, this indirectly means that UHF Amateur receivers apparently are an excellent way to know when certain military RADAR systems go active, and that in and of itself is a bit of an intelligence coup, if you think about it. Buy an HT if you're wondering if the big iron is up and active... :-) Amateurs on the coasts near Naval bases regularly receive unintentional interference from Navy RADAR, inland it's usually aircraft (think about the ERP/power requirements to hear OFF-FREQUENCY UHF noise on your Amateur Repeater... whew... those boys have some power on board!) or fixed installations, and can be DF'ed (if a ground source) right to the antenna. Of course, not all of it is off- frequency... depending on the RADAR or Comm system. A number of Colorado Amateurs DF'ed the EPLRS noise at Buckley AFB right up to the antenna (with appropriate permission to be on-base at the time) and later some careful negotiation with the system manager included pointing out that if he didn't notch out the Amateur repeater inputs (which the system CAN do, since it's so frequency agile), he was basically giving away the dates/times of active training missions to anyone with an Amateur UHF HT talking on a repeater in the area, along with just general begging... I hear that this is very location dependent, and probably also had to do quite a bit with the fact that one of the Amateurs talking to them was a RADAR/SIGINT expert from a past life... I think. He won't say. Hah... those of you who've done those jobs get it when I joke about that. Anyway, haven't had any EPLRS noise now for many years here in the Denver area... I'm sure one can spin the dial and still hear it in other sections of the band during missions, but not on the repeater inputs... system manager here was SMART and got it. Active transmitters means others know something useful about what you're up to... -- Nate Duehr, WY0X n...@natetech. mailto:nate%40natetech.com com http://facebook. http://facebook.com/denverpilot com/denverpilot http://twitter. http://twitter.com/denverpilot com/denverpilot
Re: [Repeater-Builder] Noise on UHF
Yes, I'm getting it in Rockland County, NY on one of my UHF machines. I'm told that the noise I'm hearing, which I only hear every blue moon, is some sort of military radar. Adam N2ACF Chuck Kelsey wrote: Is anyone hearing a strange noise (buzz/whine) on UHF? Chuck WB2EDV Yahoo! Groups Links
Re: [Repeater-Builder] Noise on UHF
Yes, it has been on and off for the past few weeks in Western New York and very bad today. Sounds like the radar we had on our cross state M/W in the 90,s. Dick Message sent from Sprint Pre 3g device.Chuck Kelsey wrote: Is anyone hearing a strange noise (buzz/whine) on UHF? Chuck WB2EDV
Re: [Repeater-Builder] Noise on UHF
OK, I was afraid of that. It's almost wiping out several repeaters here and can even be heard on simplex transmissions. Western NY and Western PA. Chuck WB2EDV - Original Message - From: Adam Feuer feu...@optonline.net To: Repeater-Builder@yahoogroups.com Sent: Wednesday, June 17, 2009 4:47 PM Subject: Re: [Repeater-Builder] Noise on UHF Yes, I'm getting it in Rockland County, NY on one of my UHF machines. I'm told that the noise I'm hearing, which I only hear every blue moon, is some sort of military radar. Adam N2ACF Chuck Kelsey wrote: Is anyone hearing a strange noise (buzz/whine) on UHF? Chuck WB2EDV Yahoo! Groups Links Yahoo! Groups Links
Re: [Repeater-Builder] Noise on UHF
Thanks Dick. Do you know where it originates? Chuck WB2EDV - Original Message - From: wb2...@aol.com To: Repeater-Builder@yahoogroups.com Sent: Wednesday, June 17, 2009 4:49 PM Subject: Re: [Repeater-Builder] Noise on UHF Yes, it has been on and off for the past few weeks in Western New York and very bad today. Sounds like the radar we had on our cross state M/W in the 90,s. Dick Message sent from Sprint Pre 3g device. -- Chuck Kelsey wrote: Is anyone hearing a strange noise (buzz/whine) on UHF? Chuck WB2EDV
Re: [Repeater-Builder] Noise on UHF
Same question - are you within line of sight of any military installations? We had a lovely buzz saw sound happen about 6 months ago interferring with some sattelite downlink equipment here in the valley and would wipe our UHF repeater up on the hill... It primarily happened between 5 and 10 pm local time... Eventually tracked it down to electronic warfare equipment onboard visiting aircraft at the air force base about 50 miles to the south... As soon as the wargames were over, the interference to both the sattelite downlink (Fox News SD in this case) and the UHF repeaters up on the hill went away. Haven't had an issue since. On Wed, Jun 17, 2009 at 2:47 PM, Adam Feuer feu...@optonline.net wrote: Yes, I'm getting it in Rockland County, NY on one of my UHF machines. I'm told that the noise I'm hearing, which I only hear every blue moon, is some sort of military radar. Adam N2ACF Chuck Kelsey wrote: Is anyone hearing a strange noise (buzz/whine) on UHF? Chuck WB2EDV Yahoo! Groups Links
Re: [Repeater-Builder] Noise on UHF
Rockland County is north of New York City. My county is at the opposite end of the state between Erie, PA and Buffalo, NY. It's either two different sources of interference or has one heck of a footprint. Chuck WB2EDV - Original Message - From: AJ To: Repeater-Builder@yahoogroups.com Sent: Wednesday, June 17, 2009 5:17 PM Subject: Re: [Repeater-Builder] Noise on UHF Same question - are you within line of sight of any military installations? We had a lovely buzz saw sound happen about 6 months ago interferring with some sattelite downlink equipment here in the valley and would wipe our UHF repeater up on the hill... It primarily happened between 5 and 10 pm local time... Eventually tracked it down to electronic warfare equipment onboard visiting aircraft at the air force base about 50 miles to the south... As soon as the wargames were over, the interference to both the sattelite downlink (Fox News SD in this case) and the UHF repeaters up on the hill went away. Haven't had an issue since. On Wed, Jun 17, 2009 at 2:47 PM, Adam Feuer feu...@optonline.net wrote: Yes, I'm getting it in Rockland County, NY on one of my UHF machines. I'm told that the noise I'm hearing, which I only hear every blue moon, is some sort of military radar. Adam N2ACF Chuck Kelsey wrote: Is anyone hearing a strange noise (buzz/whine) on UHF? Chuck WB2EDV Yahoo! Groups Links
Re: [Repeater-Builder] Noise on UHF
What ever it is it is also affecting the KB3DOL/N2HLT repeater system of the finger lakes area of New york state and the northern tier of Pa, so it is definitely wide area interference. So bad this afternoon that you could barely hold a conversation. Actually I thought that I had a repeater issue until I read the post. Thank You. John Installer/Tech Midstate Communications 1st Lieut, S.T.V.F.D. KB3DOL www.midstatecomm.com http://stvfd.homestead.com/ www.repeater.net/n2hlt --- On Wed, 6/17/09, wb2...@aol.com wb2...@aol.com wrote: From: wb2...@aol.com wb2...@aol.com Subject: Re: [Repeater-Builder] Noise on UHF To: Repeater-Builder@yahoogroups.com repeater-builder@yahoogroups.com Date: Wednesday, June 17, 2009, 4:49 PM Yes, it has been on and off for the past few weeks in Western New York and very bad today. Sounds like the radar we had on our cross state M/W in the 90,s. Dick Message sent from Sprint Pre 3g device.Chuck Kelsey wrote: Is anyone hearing a strange noise (buzz/whine) on UHF? Chuck WB2EDV
RE: [Repeater-Builder] Noise on UHF
It sounds like the down looking radar that we have been commonly experiencing for decades in Florida. It is operated from an aircraft for spotting low flying aircraft that are below the beam of ground based radar. Down here, the primary target is smuggling aircraft and border security. Doug K4AC
Re: [Repeater-Builder] Noise on UHF
Hi All Just be thankful that the Military is still using 420-450mhz. We share it and if they stop using it, Washington will sell it for something. We get a lot radar and radio location data every day and night. We live with it. Have been moving our links from 420 to 2.4GHz ham band. Ralph, W7HSG - Original Message - From: AJ aj.grant...@gmail.com To: Repeater-Builder@yahoogroups.com Sent: Wednesday, June 17, 2009 2:17:29 PM GMT -07:00 U.S. Mountain Time (Arizona) Subject: Re: [Repeater-Builder] Noise on UHF Same question - are you within line of sight of any military installations? We had a lovely buzz saw sound happen about 6 months ago interferring with some sattelite downlink equipment here in the valley and would wipe our UHF repeater up on the hill... It primarily happened between 5 and 10 pm local time... Eventually tracked it down to electronic warfare equipment onboard visiting aircraft at the air force base about 50 miles to the south... As soon as the wargames were over, the interference to both the sattelite downlink (Fox News SD in this case) and the UHF repeaters up on the hill went away. Haven't had an issue since. On Wed, Jun 17, 2009 at 2:47 PM, Adam Feuer feu...@optonline.net wrote: Yes, I'm getting it in Rockland County, NY on one of my UHF machines. I'm told that the noise I'm hearing, which I only hear every blue moon, is some sort of military radar. Adam N2ACF Chuck Kelsey wrote: Is anyone hearing a strange noise (buzz/whine) on UHF? Chuck WB2EDV Yahoo! Groups Links
Re: [Repeater-Builder] Noise on UHF
Isn't 2.4 GHz also shared with the federal government? Chuck WB2EDV - Original Message - From: Ralph S. Turk To: Repeater-Builder@yahoogroups.com Cc: Repeater-Builder@yahoogroups.com Sent: Wednesday, June 17, 2009 7:16 PM Subject: Re: [Repeater-Builder] Noise on UHF Hi All Just be thankful that the Military is still using 420-450mhz. We share it and if they stop using it, Washington will sell it for something. We get a lot radar and radio location data every day and night. We live with it. Have been moving our links from 420 to 2.4GHz ham band. Ralph, W7HSG
RE: [Repeater-Builder] Noise on UHF
Radar buzz (colloquial name around here is the bees). We get it quite often here in eastern PA/NJ/DE/MD/NY. 440 propagation has been a bit enhanced today (I wouldn't say wide open), but hearing stations in NYC and LI here in Philly. --- Jeff -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Chuck Kelsey Sent: Wednesday, June 17, 2009 4:42 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Noise on UHF Is anyone hearing a strange noise (buzz/whine) on UHF? Chuck WB2EDV No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.339 / Virus Database: 270.12.61/2167 - Release Date: 06/17/09 05:53:00
Re: [Repeater-Builder] Noise on UHF
Yep. It went away at 7:00 PM. Six meters has been open most of the evening, too. Chuck WB2EDV - Original Message - From: Jeff DePolo j...@broadsci.com To: Repeater-Builder@yahoogroups.com Sent: Wednesday, June 17, 2009 9:19 PM Subject: RE: [Repeater-Builder] Noise on UHF Radar buzz (colloquial name around here is the bees). We get it quite often here in eastern PA/NJ/DE/MD/NY. 440 propagation has been a bit enhanced today (I wouldn't say wide open), but hearing stations in NYC and LI here in Philly. --- Jeff -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Chuck Kelsey Sent: Wednesday, June 17, 2009 4:42 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Noise on UHF Is anyone hearing a strange noise (buzz/whine) on UHF? Chuck WB2EDV No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.339 / Virus Database: 270.12.61/2167 - Release Date: 06/17/09 05:53:00 Yahoo! Groups Links
Re: [Repeater-Builder] Noise on UHF
I am hearing it here in North Central PA as well It gets very bad at times. Corey N3FE On Wed, 17 Jun 2009, Chuck Kelsey wrote: OK, I was afraid of that. It's almost wiping out several repeaters here and can even be heard on simplex transmissions. Western NY and Western PA. Chuck WB2EDV - Original Message - From: Adam Feuer feu...@optonline.net To: Repeater-Builder@yahoogroups.com Sent: Wednesday, June 17, 2009 4:47 PM Subject: Re: [Repeater-Builder] Noise on UHF Yes, I'm getting it in Rockland County, NY on one of my UHF machines. I'm told that the noise I'm hearing, which I only hear every blue moon, is some sort of military radar. Adam N2ACF Chuck Kelsey wrote: Is anyone hearing a strange noise (buzz/whine) on UHF? Chuck WB2EDV Yahoo! Groups Links Yahoo! Groups Links
Re: [Repeater-Builder] Noise on UHF
Yes. Point to point works well with 1 watt and 6-8ft some time 10 ft grid dishes over 80 mile paths. So far no problems except for DTV getting into the Mux cards. But thats another story. Ralph - Original Message - From: Chuck Kelsey wb2...@roadrunner.com To: Repeater-Builder@yahoogroups.com Sent: Wednesday, June 17, 2009 5:04:36 PM GMT -07:00 U.S. Mountain Time (Arizona) Subject: Re: [Repeater-Builder] Noise on UHF Isn't 2.4 GHz also shared with the federal government? Chuck WB2EDV - Original Message - From: Ralph S. Turk To: Repeater-Builder@yahoogroups.com Cc: Repeater-Builder@yahoogroups.com Sent: Wednesday, June 17, 2009 7:16 PM Subject: Re: [Repeater-Builder] Noise on UHF Hi All Just be thankful that the Military is still using 420-450mhz. We share it and if they stop using it, Washington will sell it for something. We get a lot radar and radio location data every day and night. We live with it. Have been moving our links from 420 to 2.4GHz ham band. Ralph, W7HSG
Re: [Repeater-Builder] Noise on UHF
Yeah, but usually we just call them club members. :-) -- Nate Duehr Sent from my iPhone On Jun 17, 2009, at 14:41, Chuck Kelsey wb2...@roadrunner.com wrote: Is anyone hearing a strange noise (buzz/whine) on UHF? Chuck WB2EDV
