616
North American Shortwave Pirate / Re: Zeke's Attic/KNEW 4122 USB 2315 UTC 19 Jan 2019
« on: January 19, 2020, 2340 UTC »
jba 2338z
Shortwave Pirate Radio In North America And Around The World, And Other Signals That Go Bump In The Night
We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations.
Always consult with the appropriate authorities if you have questions concerning what is permissable in your locale.
Yer, I'd wanna see inside before spending, mebbe a rtl inside it run by a timex sinclair 8088.
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617
Amateur Radio / Re: QRP contacts
« on: January 19, 2020, 2325 UTC »
I recently got a new qrp rig;
https://www.youtube.com/watch?v=m5le1ZFcGE8
not me, just an example
Prior to that had a Ten Tec 509 I never made a contact with, and a few years ago had a Icom 703. The 509 and 703 are similar in power out, with the Icom having a transmatch built in. The Icom matched a few loops of wire around a window frame in the bedroom providing for ssb contacts with Michigan and elsewhere, the 703s a nice rig but the finals are sensitive and I am brutish to equipment, so you know how that went.
The G90 has much tougher finals as well as a wideband transmatch with the addition of a full 20w out and of course the tiny fish finder.
In cw work, 5w will in many cases make over 90 percent of contacts heard, where 1w will be heard only 10 percent of the time.
The corollary to ssb work is 20w will give you about 90 percent heard call success, where 5w will only be about 10 percent successful.
Cw has other advantages for low power work as many cw ops use headsets rather than a desktop speaker, allowing for better sound detail and noise negation, and the obvious benefit of concentration of energy within a few hundred Hz of filter bandwidth.
https://www.youtube.com/watch?v=m5le1ZFcGE8
not me, just an example
Prior to that had a Ten Tec 509 I never made a contact with, and a few years ago had a Icom 703. The 509 and 703 are similar in power out, with the Icom having a transmatch built in. The Icom matched a few loops of wire around a window frame in the bedroom providing for ssb contacts with Michigan and elsewhere, the 703s a nice rig but the finals are sensitive and I am brutish to equipment, so you know how that went.
The G90 has much tougher finals as well as a wideband transmatch with the addition of a full 20w out and of course the tiny fish finder.
In cw work, 5w will in many cases make over 90 percent of contacts heard, where 1w will be heard only 10 percent of the time.
The corollary to ssb work is 20w will give you about 90 percent heard call success, where 5w will only be about 10 percent successful.
Cw has other advantages for low power work as many cw ops use headsets rather than a desktop speaker, allowing for better sound detail and noise negation, and the obvious benefit of concentration of energy within a few hundred Hz of filter bandwidth.
618
Utility / Re: For your SIGINT Library
« on: January 19, 2020, 2219 UTC »
The Tools of Owatatsumi;
Japan’s Ocean Surveillance and Coastal Defence Capabilities
link added
Japan’s Ocean Surveillance and Coastal Defence Capabilities
link added
619
Utility / Re: 11175 USB
« on: January 19, 2020, 2115 UTC »
PIONEER 08 calling MAINSAIL for pp 2105Z 19JAN20
Andrews requests PIONEER 08 qsy to discrete 09120
Pp traffic ensues on 9120
Andrews requests PIONEER 08 qsy to discrete 09120
Pp traffic ensues on 9120
620
Equipment / Re: Belka-DSP : miniature DSP receiver
« on: January 18, 2020, 2259 UTC »Never trust a Commie !
Yer, I'd wanna see inside before spending, mebbe a rtl inside it run by a timex sinclair 8088.
621
General Radio Discussion / Re: Hinsdale Neighbors Fight Plans To Install 5G Cell Service, Citing Health Worries
« on: January 18, 2020, 2248 UTC »
If they can just get these things to mimic direct to brain penguin envenomation symptoms.
622
General Radio Discussion / Re: Reports: iHeartMedia undergoing layoffs, including at Syracuse, Rochester radio
« on: January 18, 2020, 2248 UTC »
Surely there will be no rise in monopolies because of these shenanigans.
623
General Radio Discussion / Re: Huge military exercise could jam GPS for small planes flying in the Southeast
« on: January 18, 2020, 2244 UTC »
USN as well as the rest of US services know they will have to fight in a gps-degraded battlefield if we face off with Russia and/or China, so best to get your stuff tested before you need it.
624
General Radio Discussion / Re: Reception based on East coast/West coast
« on: January 18, 2020, 2241 UTC »
For the more permanent verticals, it may pay to drive a ground rod to the water table, if the table is within reach.
Suppose same could be said for any ground rod.
Keep in mind after a few inches below the surface there's no rf due loss, you might get more benefit if you buried the ground rod or wire horizontally and only an inch or two under the surface.
Suppose same could be said for any ground rod.
Keep in mind after a few inches below the surface there's no rf due loss, you might get more benefit if you buried the ground rod or wire horizontally and only an inch or two under the surface.
625
VHF/UHF Logs, including satellites and radiosondes / Re: UHF mil air
« on: January 17, 2020, 2013 UTC »
I'd have to have a i/q of the entire sig to run it thru the batputer. Top o' me head says this was from the Sentry, with the BUFF you mention a close second.
As to the tacamo wideband mux, it's always wideband fm, 60kc wide I think, with various amplitude modulated sigs superimposed on the channelised mux stream. There will be two mux flowing, uplink and downlink, I'm not in range of any uplink that I know of, haven't heard any. There has been mention of a digital version to replace the analog wideband fm link but have yet to see it here. Somewhere around the start of this thread are some video links to steps taken by a monitor to extract specific channels from the mux, so you might take a look at them if you haven't.
As to the tacamo wideband mux, it's always wideband fm, 60kc wide I think, with various amplitude modulated sigs superimposed on the channelised mux stream. There will be two mux flowing, uplink and downlink, I'm not in range of any uplink that I know of, haven't heard any. There has been mention of a digital version to replace the analog wideband fm link but have yet to see it here. Somewhere around the start of this thread are some video links to steps taken by a monitor to extract specific channels from the mux, so you might take a look at them if you haven't.
626
Shortwave Broadcast / Re: RTM Sarawak FM 9835 am 1731 utc 16 Jan 2020
« on: January 17, 2020, 1949 UTC »
Noice!
627
Utility / Re: 11175 USB
« on: January 16, 2020, 1953 UTC »
BEN HOGAN being checked into the net by EXTRADITE
1953Z 16JAN20
1953Z 16JAN20
628
Propagation / Re: Grey line map (real time)
« on: January 16, 2020, 1935 UTC »
https://www.amazon.com/Geochron-Standard-World-Goatskin-Silver/dp/B00XYYFBF8
for the well-heeled nerd
for the well-heeled nerd
629
Propagation / Re: Poor conditions (noob)
« on: January 16, 2020, 1931 UTC »
The hell it is, 40 and 80 were dead last night. Must be my timing.
630
VHF/UHF Logs, including satellites and radiosondes / Re: UHF mil air
« on: January 16, 2020, 1929 UTC »
Hi Mike, nice to have another ear aboard. Didn't have 351 in the rx, will see if anything pops up.
