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 61 
 on: April 12, 2014, 02:11:30 PM 
Started by av8tor172 - Last post by InterpreDemon
George, can that program allow transmission on 49 mHz? If so, you could use an old portable, battery operated baby monitor receiver. I did that years ago with a radio shack model that had a belt clip. You could also just use a portable scanner, but that little receiver was great and the 9v battery lasted forever. I'll dig one out of the junk pile and get a model#, I had about three of them I used after their primary mission ended. Bypassed the mic input on the transmitter and fed line audio. The great thing was that the transmitter had a very fast attack, slow-decay AGC for the audio, a dynamic range of about 30db, and it was perfect for monitoring HF sideband on my big old tube rigs that did not have product detectors... could just set the RF gain way down low and let the baby monitor take care of the rest.

That monitor in it's designed configuration (listening to our daughter 26 years ago) was very, very sensitive. I remember listening from the shack in the wee hours of the night, the monitor was on the second floor, and I could actually hear the motorized zoning valves in the basement winding open before the circulator and boiler kicked on.

 62 
 on: April 12, 2014, 02:26:08 AM 
Started by av8tor172 - Last post by bbrasmussen
Love it George! Awesome. Keep the cool projects coming! Thanks for sharing them.

 63 
 on: April 12, 2014, 02:25:46 AM 
Started by jvnanu - Last post by tyketto
25R/7L is inactive. As such, when inactive, the runway becomes a taxiway, which falls under the control of the ground controller.
So how does Vegas Ground refer to that new "taxiway" then? "Runway" followed by the numbers of whichever departure end the pilot happens to be closest to based on a quick glance/guess?

They refer to it as the runway name parallel to the one active. In this case, with configuration #3, it would be runway 25R. Though this would be used with Back-Taxi phraseology, as defined in the P/CG.

In Configuration #2, they use the 1L/1R for landing, with 7L for IFR departures, and 1L at Whiskey for VFR aircraft. That leaves 7R not used, but not inactive, so they would also refer to it as the parallel runway to the one that is active, so in this case it would also be 7R.

...Is Tower giving the crossing instruction? My understanding is that if a given runway is inactive, control of the inactive runway falls to the Ground controller.
In my case (KROA, Class C), it's always Ground giving the taxi instructions.  I never talk to Tower until I reach the departure runway.  (Although often the same voice on both frequencies!)

That's fine there, but if the runway is inactive, it should fall under the jurisdiction of the ground controller, not tower. Back to Vegas for the example. If the 1s and 25L are being used for arrivals, Tower will instruct aircraft to hold short of runway 25R, and contact Ground. Unless coordinated, Tower won't give the crossing instruction for an inactive runway.

BL.

 64 
 on: April 11, 2014, 11:32:02 PM 
Started by medflight5 - Last post by frcabot
"I sure hope the NTSB never writes a probable cause determination like that in my case."

I sure hope the NTSB never has a need to write any probable cause determination in my case... or yours smiley
Touche.

 65 
 on: April 11, 2014, 08:10:03 PM 
Started by Squawk 7700 - Last post by Squawk 7700
Yes Ron it's hard to manage a remote feed but with some perseverance it can be done as in your example.  grin

Turns out the MCA204M Splitter may have gone out? It's been replaced with an 8 port MCA208M and all is fine now.

Ken

 66 
 on: April 11, 2014, 03:12:44 PM 
Started by jvnanu - Last post by Rick108
...Is Tower giving the crossing instruction? My understanding is that if a given runway is inactive, control of the inactive runway falls to the Ground controller.
In my case (KROA, Class C), it's always Ground giving the taxi instructions.  I never talk to Tower until I reach the departure runway.  (Although often the same voice on both frequencies!)

 67 
 on: April 11, 2014, 03:01:49 PM 
Started by jvnanu - Last post by swa4678
25R/7L is inactive. As such, when inactive, the runway becomes a taxiway, which falls under the control of the ground controller.
So how does Vegas Ground refer to that new "taxiway" then? "Runway" followed by the numbers of whichever departure end the pilot happens to be closest to based on a quick glance/guess?

 68 
 on: April 11, 2014, 02:58:23 PM 
Started by jvnanu - Last post by tyketto
I've never really thought about this before, but since this thread started, I've been paying closer attention.  It seems (at least at my home airport) that when referring to the active runway, they use the just the approach end (i.e. "cleared to cross runway 24"), whereas when I'm cleared across an inactive runway, they give BOTH ends (i.e. "cleared to cross runway 6/24").  Maybe it's just a local custom, but in thinking about it, it does make some sense.

That's interesting..

Is Tower giving the crossing instruction? My understanding is that if a given runway is inactive, control of the inactive runway falls to the Ground controller.

For example, when Las Vegas goes into Configuration 3, runways 1L and 1R are used for arrivals and departures, while 25L is used for arrivals only. 25R/7L is inactive. As such, when inactive, the runway becomes a taxiway, which falls under the control of the ground controller.

Now, this may just be SOP for LAS, but I'll look in the latest revision of the .65 to see if that is consistent.

BL.

 69 
 on: April 11, 2014, 02:57:45 PM 
Started by av8tor172 - Last post by av8tor172
I've assembled the parts, the software (all free & not customized) and in a few hours had myself a functioning standalone Mode-S / ADS-B Mapping system on a 7" TFT screen.

This was built using a cheap RTL-Dongle, Raspberry Pi computer, and a 7" TFT Touchscreen display.  If you wanted you could put this in a small enclosure and mount it in your car.

First came Car Radios, then Mobile Scanners, and now a Mobile Aircraft Radar System for your car!

You can see more about this project including a video here:
http://milaircomms.com/raspberry_pi_portable_aircraft_radar_system.html

Enjoy
George
www.MilAirComms.com

 70 
 on: April 11, 2014, 11:44:39 AM 
Started by av8tor172 - Last post by av8tor172
Going through my older Military Air recordings and found this one that you might be interested in. 

This was recorded on Sept. 12, 2002 off a Grumman Flight Test frequency (might have been 275.200 Mhz, sorry didn't write it down).

I"m not sure of aircraft type, something at the time lead me to believe it might have been an F-14.  He was flying off the coast of St. Augustine, FL.

Enjoy
George
www.MilAirComms.com

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