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 91 
 on: Yesterday at 03:45:32 PM 
Started by AD0GI - Last post by KB5FLA
I have both. The Watt's Up works fine but the EZ-Meter is much sturdier construction and includes an LED for over and undervoltage. It also comes with Anderson PowerPoles installed standard. More of a serious ham radio level of gear instead of consumer grade.

 92 
 on: Yesterday at 03:37:40 PM 
Started by NN5O - Last post by M6GOM
As mentioned diesels have digital injection and make a lot of noise too.
[/quote

My 2010 Ford Mondeo TDCi is RF silent. I can run with the pre-amp on and get no noise. The 2004 Ford Mondeo TDCi it replaces was the same.

 93 
 on: Yesterday at 03:11:19 PM 
Started by KM4ASZ - Last post by KM4ASZ
Thank JOY,
  I'm pretty much aware that its not worth more than"maybe " a few hundred tops to the right collector If they even wanted it but I just find it curious that no one has been able to tell me anything about it .
  I am really just wanting to know because no one has any idea what it is ,and I cant find even a reference on it in any catalog or magazine. I guess I shoulnt have said I was selling to get an amp and even then I am just putting spare money away to get a 600 watt amp but everything helps and gets me closer to getting my amp.

 94 
 on: Yesterday at 03:07:41 PM 
Started by KD9AXI - Last post by KD9AXI
On another forum Philip stated a major electrical storm took out his servers and it might take a while to get them back up.  I really miss being able to see my signal

 95 
 on: Yesterday at 03:00:51 PM 
Started by KK6GMN - Last post by AA4PB
"There are times when our work experiences can have positive influence on how we experience our hobby and what we contribute to the hobby."

There have also been times when my amateur radio experiences have had a positive influence on what I've contributed to work. A number of times my designs that originally started out as an amateur radio application ended up being a solution for a work application.

 96 
 on: Yesterday at 02:55:26 PM 
Started by KD0ZZX - Last post by W9FIB
And the National Electrical Code is a required minimum standard in most jurisdictions in the USA.

bear in mind that the NEC (NPFA 70) is different than the Lightning Protection Code (NFPA 780 - STANDARD FOR THE INSTALLATION OF LIGHTNING PROTECTION SYSTEMS).

NEC doesn't mention anything about lightning rods, air terminals, etc.

NEC (and NFPA 780) require that the lightning protection system (LPS) and the structure's electrical system ground be bonded together, but interestingly, they also require that they be separate systems: e.g. you cannot use the electrical safety ground conductors (green wire) as lightning safety ground.  Nor can you use your lightning protection grounding conductors as a electrical safety grounding terminal.

The antenna grounding requirements in the NEC are more about contact with power lines than lightning protection:  the bonding is all about making sure that nothing you "touch" is at an unsafe voltage, so you can wander about in damp bare feet without fear.  It's also about making sure that the fuse blows or CB trips if there's a short between power line and "touchable" stuff (e.g. metal enclosures, water pipes, fixtures).


Which is why I used the word minimum.

Here is a link to the book in pdf.

www.uscg.mil/petaluma/TPF/.../NFPA_780.pdf

Interesting but geared to setting up a lightning protection system. Not for properly grounding your equipment and feedlines. The section on tower protection is interesting, and requires further study to see what would be proper for ham towers.

However it does not relieve you of conforming to NFPA 70, since all residential units in most jurisdictions in the USA are required to comply.

 97 
 on: Yesterday at 02:47:39 PM 
Started by KD5GR - Last post by AA4PB
Be careful. Even though the HOA is dissolved, the CC&Rs that run with the land may still restrict antenna installations and any homeowner can probably ask a court to enforce that restriction on you.

 98 
 on: Yesterday at 02:41:41 PM 
Started by KK6GMN - Last post by G3RZP
K8MW,

Mike,

perhaps the greatest compliment came from a non-ham member of the German Administration.

I quote

"You are not an amateur but a real professional. You as an amateur are more professional than many of the so called professionals from administrations who are here. We need more amateurs like you"

I am proud of that comment. But also when on,  another topic (Short Range Devices) the chairman asked 'What is the Amateur's opinion? They know about these things....'

I've retired now. Be thankful that another engineer (G4FSU, RSGB HF manager) has picked up the mantel....

You only need to be able to give up to 25 days a year to do it......

 99 
 on: Yesterday at 02:39:59 PM 
Started by KF5ZYS - Last post by KF5ZYS
You could use an ultimax 100 end fed or other similar antennas with your tuner. They work on all bands with varying levels of efficiency. Eham has many reviews .
Thats looking like a good option
Thankyou

 100 
 on: Yesterday at 02:31:55 PM 
Started by KB1WSY - Last post by G3RZP
Martin,

Specs have become much tighter since 1969. Especially after the 1993 WARC, where the radio astronomers were complaining about spurious emission from Iridium satellites. This led to the setting up of  ITU-R TG1/3 which for the first time proposed limits for amateur stations, which were incorporated (by   a very complex route into the Radio Regulations in 1996) as a result of ITU-R Task Group 1/3. The FCC regulations require harmonics and spurs to be -43dBc for transmitters below 30MHz. The ITU requires in the International Radio Regulations (ITU-R SM329) that amateur transmitters operating below 30 MHz have all harmonics and spurious emissions suppressed by 43 + 10 log P dB without having to be more than 50dB down. The FCC screwed up (big surprise!) by forgetting the 10 Log P - in spite of the fact that the FCC delegate to the ITU meeting is a Ham, and the FCC guy who wrote the rule is a ham!

All of this was resulted in me ending up at ITU defending amateur radio interests at ITU Study Group 1 for the next 16 years.....as well at the CEPT Study Group Spectrum Engineering.............

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