286
WEFAX and SSTV / Re: Aviation Emercom of RUSSIA special event ham radio station R25AER
« on: May 17, 2020, 1854 UTC »
They look lovely.
Shortwave Pirate Radio In North America And Around The World, And Other Signals That Go Bump In The Night
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287
Utility / Re: 11175 USB
« on: May 16, 2020, 1905 UTC »
Might have been a Canadian NORAD contingent. Wouldn't surprise me to find more Canadian participation in these exercises, also E6s are possibly working with P8s to a degree, thickening the plot.
288
General Radio Discussion / Re: What were those antennas good for
« on: May 14, 2020, 1838 UTC »
Yeah have to get someone enarby to monitor for radioactivity. Also, even with the loss of longest elements they still work fine on the higher bands.
289
Equipment / Re: Grounding A Radio
« on: May 13, 2020, 2233 UTC »
Take some wire and touch it to ground of the ac and the rig and see what happens. Test it on a few bands. Then decide if there was an improvement or not.
290
VHF/UHF Logs, including satellites and radiosondes / Re: Nour-01 satellite frequency
« on: May 13, 2020, 2227 UTC »
Allegedly, IRGC will orbit Noor-2 in June.
292
Equipment / Re: What are you using for SWLing?
« on: May 12, 2020, 2038 UTC »
Try your hand at using an online sdr here;
http://kiwisdr.com/public/
http://kiwisdr.com/public/
293
Equipment / Re: Receiver protection from nearby xmtrs
« on: May 12, 2020, 1605 UTC »
Very nice. On the home brew jobs I think 1n4001s are going to be better than 1n4148s or other small signal diodes because they're horrific imd generators in certain instances such as nearby ambc stas, and they might not live after a pop or two from a tstorm. The 1n4001s are similar to a PIN diode in their junction, thus almost impervious to generating imd, and they're rated to handle much greater power levels than small sig diodes.
In some of my hf rigs that don't feature built in gdt protection, I place a gdt across the uhf socket(s) and a 20v mov across the dc input.
I suppose one could get away with a simple ne2 bulb across a decent inductance to ground, mounted inside a metal box and call it good. Pretty much what the polyphaser protector inline with the rig in front of me has.
In some of my hf rigs that don't feature built in gdt protection, I place a gdt across the uhf socket(s) and a 20v mov across the dc input.
I suppose one could get away with a simple ne2 bulb across a decent inductance to ground, mounted inside a metal box and call it good. Pretty much what the polyphaser protector inline with the rig in front of me has.
294
General Radio Discussion / Re: What were those antennas good for
« on: May 11, 2020, 2020 UTC »
Log periodics, mebbe 3 to 30mhz operation. Giant mofos! The one to the south of the facility seems to be having issues with the lowest frequency element.
If that's Panzer Kasserne, my uncle was there in the early 50s with the US Army Signal Corps(e). There's a few logs in and around Omaha Nebraska of that size located a few miles from downtown so as to "survive" nuclear blast I suppose, ATT owns one atop their building in downtown Omaha however, they did when I was there, might be gone now. OFFUT AFB has some rotatables at the Elkhorn Communications Detachment a few miles west of Omaha, as well as one in NP Dodge state park in north Omaha.
Might be interesting to note freqs, languages, and azimuths of these antennae when they become active (don't be surprised if certain "espione" transmissions are sent via these same behemoths).
If that's Panzer Kasserne, my uncle was there in the early 50s with the US Army Signal Corps(e). There's a few logs in and around Omaha Nebraska of that size located a few miles from downtown so as to "survive" nuclear blast I suppose, ATT owns one atop their building in downtown Omaha however, they did when I was there, might be gone now. OFFUT AFB has some rotatables at the Elkhorn Communications Detachment a few miles west of Omaha, as well as one in NP Dodge state park in north Omaha.
Might be interesting to note freqs, languages, and azimuths of these antennae when they become active (don't be surprised if certain "espione" transmissions are sent via these same behemoths).
295
For Sale / Wanted / Barter / Re: Jellyfish and Cyclops Scratch And Dent Sale
« on: May 11, 2020, 2001 UTC »
Rx only or can you push a gigawatt thru em?
296
For Sale / Wanted / Barter / Re: WTB: KiwiSDR
« on: May 11, 2020, 2000 UTC »
sometimes that smolinksi kid advertises them a ten spot cheaper
297
Equipment / Re: Beverage Antenna Optimization
« on: May 10, 2020, 1911 UTC »
It'd be neato to see plots before and after rainstorms.
298
Utility / Re: 11175 USB
« on: May 10, 2020, 1905 UTC »
HFGCS is the main player till it is simulated as having been nuked, then E4s and E6s take over - wich is what they are for, with a boomer (SSBN) having been reported in an exercise in 2017. I suppose one would have to keep track of calls heard and extrapolate from there. They (E4/6s and GEP) were also up on UHF MUX and likely the milstar sat system, milstar or a green laser sat being what I expect subs to use for such comms.
https://en.wikipedia.org/wiki/Milstar
https://en.wikipedia.org/wiki/Advanced_Extremely_High_Frequency
https://www.dote.osd.mil/Portals/97/pub/reports/FY2010/af/2010fabt.pdf?ver=2019-08-22-112948-490
https://en.wikipedia.org/wiki/Milstar
https://en.wikipedia.org/wiki/Advanced_Extremely_High_Frequency
https://www.dote.osd.mil/Portals/97/pub/reports/FY2010/af/2010fabt.pdf?ver=2019-08-22-112948-490
299
Utility / Re: 11175 USB
« on: May 07, 2020, 1908 UTC »
Quarterly Exercise SKYMASTER ongoing 1905Z 07MAY20
300
VHF/UHF Logs, including satellites and radiosondes / Re: UHF mil air
« on: May 07, 2020, 1601 UTC »
RHINO 50 (RHINO could be F-18E VF-31, CVW-14, NAS OCEANA VA or C-5A, 89th AS/445th AW, Wright-Patterson/AFRC, C-5A, 337th AS Westover ARB MA, F-15 123rd FS OR ANG Portland IAP OR, A-10 303RD FS AFRES WHITEMAN AFB MO) and MASH 82 (KC-135R 434th ARW, AFRC Grissom ARB, IN) in aar near Indy with counterpart some 30 miles away. An INDY (KC-135R 434th ARW, AFRC Grissom ARB, IN) flight is also present or indicative of a callsign change.
336.100 AM 07MAY20
336.100 AM 07MAY20