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Messages - nickcarr3151

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1
HF Mystery Signals / New digi mode on 4207cf ?
« on: November 06, 2020, 1207 UTC »
Any ideas?

I'll try to get a wide bandwidth recording but not having much luck as yet.  I think it's transmitting at top/bottom of hour.  This was captured @ 1200z on 11-6-2020:

Full-Size image:  https://www.dropbox.com/s/6ajtlzvz20zgtgj/4207unk.JPG?raw=1


2
Equipment / Re: Icom IC-R8600 vs Icom IC7300
« on: April 03, 2020, 1935 UTC »
Quote from: gcopter1 on April 02, 2020, 2256 UTC
The R-8600, does not require me to go out and purchase another Power Supply as I already own a Radio Shack model suitable for the job.

So you'd really put your shiny & new, $2200 receiver on a R/S power supply..?

3
Utility / Re: FEMA ALE Net and SHARES HF-SSB Frequencies
« on: April 01, 2020, 2039 UTC »
Just to be clear, this is pretty dull stuff... it's not very exciting.   ;)

4
Peskies / Re: Indonesian chanting 7000 lsb Nov 21 19
« on: March 27, 2020, 1219 UTC »
This morning (3/27) they're on 7020 LSB.   ::)

5
Utility / Re: Japanese Self Defense Forces 11223 USB voice/fsk 17:13 UTC 26 March includes MP3
« on: March 26, 2020, 1910 UTC »
Nice signal Jasmine.  Yes, the Pacific is open to a lot of stations in/around the Far East in the early morning hours.  Some days are better than others.  In ancient times, there were these 'dark spots' on the surface of the Sun -- humans called them "sunspots" -- and they would actually enhance HF communications especially during the summer months. 

Of course, these sunspots are a mystery in the cold, dark misery of present-day times.

6
Utility / Re: Possible COVID19 Case-Air Transat 785 w/New York 13348 khz 19:11Z MP3 recording
« on: March 23, 2020, 1827 UTC »
Gotta love CODAR!  ::)

7
Amateur Radio / Re: HF activity is on the rise
« on: March 17, 2020, 1942 UTC »
I think it's more likely due to propagation.  At least here in the USA, the seasonal changes should be bringing a little help.  I noticed a lot of fishermen chatting in the early morning hours coming in over the Pacific ocean.

8
Amateur Radio / Re: Thoughts on HF verticals
« on: March 17, 2020, 1937 UTC »
Quote from: pinto vortando on March 17, 2020, 1926 UTC
However, performance on 15 has been excellent and on 40 it has been phenomenal.

But all verticals are usually good on one band -- and if they're not -- then you know you got a lemon.  This is just how verticals work.  (They should work well on at least 3 bands really.)  This is not due to a specific brand of vertical.  My guess is you probably have other factors that help with your perceived performance. 

9
Amateur Radio / Re: Back on HF again!
« on: March 13, 2020, 2143 UTC »
Quote from: IZS4 on March 13, 2020, 1412 UTC
I think I'll leave the 718 stock since I'll likely sell it at some point. Didn't realize 60m was that popular being it has a small amount of frequencies.

Well it's not but a few people use it to get away from those 'other' users.  I'd modify your 718 -- you'll get more selling value than leaving it stock. ;)

10
Amateur Radio / Re: Back on HF again!
« on: March 13, 2020, 1210 UTC »
Quote from: ThaDood on March 13, 2020, 0638 UTC
Really??? Your IC-718 isn't open to 5MHz on TX?

Well to be clear, he'd have to perform the MARS/CAP mod to make this work. 

READ HERE --> http://www.catlog.net/_Descarregas/Manuals/01-Icom/Icom%20718%20OBM.pdf

11
Utility / Re: Mayday transmission on 6689 khz USB 15:27 UTC - 12 March (incl SDR IQ Recording)
« on: March 12, 2020, 1835 UTC »
Quote from: jasmine on March 12, 2020, 1822 UTC
it's not proprietary. it's not an audio wave but an IQ (spectrum) recording.

Why not just provide an audio clip?  Just my .02 but you'll probably get more responses with it.

12
Utility / Re: Mayday transmission on 6689 khz USB 15:27 UTC - 12 March (incl SDR IQ Recording)
« on: March 12, 2020, 1715 UTC »
This must be a proprietary format for SDRuno.  I'm hearing only static bits.

13
Amateur Radio / Re: Thoughts on HF verticals
« on: March 11, 2020, 2111 UTC »
Quote from: 45auto on March 11, 2020, 2106 UTC
I too am looking into an HF vertical. Only interested in the 10-40meter bands only.

Stay away from these 'commercial' antennas.  They're junk.  Do searches for CHA250B and BB7V...  you'll find glowing reviews but a few people dissected their components and found that most offer very little for their steep prices.

I highly recommend Zero-Five:  https://zerofive-antennas.com/productdisplay/10-40-meter-groundplane-freestanding-vertical-antenna-unun

(This is the antenna I have...)

14
General Radio Discussion / Room Monitors
« on: March 09, 2020, 2151 UTC »
Does anyone know of a room monitoring device that operates @ 254 Mhz?  I found one in my neighborhood.  I haven't listened too long but I was able to drive around and I.D. the general street that the signal is coming from.  It's < 1.5 miles LOS from my discone.

A friend and I were thinking of some Chicom ripoff using the odd UHF frequency.  I searched Amazon but most seem to be using either WiFi or 2.4 Ghz RF -- and if they are using RF, most generally don't mention the frequency range.

15
The RF Workbench / Re: Icom 718 problems
« on: March 09, 2020, 2143 UTC »
Quote from: redhat on March 09, 2020, 1653 UTC
Sounds like either a lightning hit, or the transmit/receive switching failed to operate correctly.

...or tx'ing w/o an antenna would do the trick!

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