Search found 7 matches

by steveschuh
Tue Apr 18, 2017 8:38 am
Forum: Ask the Engineers
Topic: Offical AMC 8 Transition Thread (was Sat. AMC-8)
Replies: 152
Views: 10179

Re: Offical AMC 8 Transition Thread (was Sat. AMC-8)

I had forgotten one detail somebody brought to my attention. It is probably a good idea but I don't know how important to pay attention to the center of box predictions for AMC-18. Will this come back to bite me?
Steve
by steveschuh
Thu Apr 13, 2017 11:48 am
Forum: Ask the Engineers
Topic: Offical AMC 8 Transition Thread (was Sat. AMC-8)
Replies: 152
Views: 10179

Re: Offical AMC 8 Transition Thread (was Sat. AMC-8)

Same problem here with the WW1 XDS. Had to change it up 01,127,000 khz. All the other XDS receivers and our Wenger were fine. It seems to be a problem with some of the older WW1 XDS receivers. All our receivers locked on and worked without doing a reboot. After the frequency change on the WW1 XDS it...
by steveschuh
Sun Oct 27, 2013 9:20 am
Forum: AM Radio
Topic: Directional Antenna NRSC Test
Replies: 9
Views: 1171

Re: Directional Antenna NRSC Test

Thanks for helping clear this up Mark. This was brought on by me retiring my old HP-141T and scope camera. I couldn't lift it anymore. I got a new Anritsu portable unit and my level of accuracy went up to the point I needed to refine my procedures. I do a lot of these tests and tracking down the mea...
by steveschuh
Sat Oct 26, 2013 5:22 pm
Forum: AM Radio
Topic: Directional Antenna NRSC Test
Replies: 9
Views: 1171

Re: Directional Antenna NRSC Test

Thanks Mark and bear with me just a little further. You get this information from the license or the FCC web site I imagine. Using what I see on the FCC web site and taking KBRF 2.2 KW night for instance. The electric field strenght shows a theoretical pattern RMS and a standard pattern RMS. Theoret...
by steveschuh
Sat Oct 26, 2013 1:40 pm
Forum: AM Radio
Topic: Directional Antenna NRSC Test
Replies: 9
Views: 1171

Re: Directional Antenna NRSC Test

I kind of understand what you are saying Mark. Take the measurement in the main lobe using the carrier field strength at that location for a reference. Then adjust the limit for the part that went over my head. (the difference between the measured IDF and the pattern RMS) In other words the limit fo...
by steveschuh
Sat Oct 26, 2013 9:35 am
Forum: AM Radio
Topic: Directional Antenna NRSC Test
Replies: 9
Views: 1171

Directional Antenna NRSC Test

I guess I need this told to me one more time. The rules give three ways to obtain a reference level on a directional measurement. When a directional antenna is used, the carrier frequency reference field strength to be used in order of preference shall be: (1) The measured nondirectional field stren...
by steveschuh
Thu Mar 17, 2011 1:19 pm
Forum: AM Radio
Topic: Bird SignalHawk PC for AM NRSC measurements?
Replies: 4
Views: 881

Bird SignalHawk PC for AM NRSC measurements?

Has anyone used one of these? It seems like it would meet the specs. and the price isn't bad.
Steve Schuh