Rather than messing with WWVB, some LORAN-C should be put back on the air. It is essentially impossible to jam, unlike GPS or WWVB.
I could easily see it with a small (1') loop and a 'scope. YMMV, -John ================== > Perry you mean like the 10' X 10' loop I put up? > It has about 800 ft of wire. > Brang the daytime signal fro 30 uv to an easy 60 +. > Compared to a 2.5 ft loop. > Yes higher power would be good. > Regards > paul > > On Sat, Jul 14, 2012 at 9:43 PM, Perry Sandeen <sandee...@yahoo.com> > wrote: > >> GM List, >> >> What has not been mentioned so far is national security needs of the >> democratic nations of the world for uninterrupted accurate >> time/frequency >> information that is not subject to interference or destruction by those >> nations diametrically opposed to personal freedom. >> >> The United States GPS system is an unparalleled success providing >> inexpensive time and frequency standards worldwide and it is relied on >> for >> innumerable critical tasks. >> >> But it requires using satellites. They are subject to destruction or >> degradation from the ground over the sovereign territory by those rouge >> states that would be so inclined. The ability to destroy a satellite >> from >> the earth has already ben demonstrated by one nation. There are >> numerous >> reports of shall we say *Malicious Tinkering* on other satellites. >> >> Setting aside the enormous expense, technical difficulties such as the >> need for sophisticated and extremely limited amount of rocket launches >> available make the system unsustainable to GPS satellites continued >> destruction or degradation from a land based source. >> >> The need for a strong viable redundancy is totally unfathomed upon those >> in the current applicable leadership of the US government. One proof of >> this was the shutting down of Loran C to save $35 M a year in a spending >> amount of several trillion dollars a year. >> >> But Loran C gave us the best and cheapest redundant alternative to GPS >> and >> perhaps might be revived. >> >> A viable WWVB signal, while a very poor third choice, provides an >> alternate backup for GPS and in a strange way that could provide >> protection >> at least for the USA GPS system. Heres why. It still is very >> difficult >> and expensive to damage/destroy satellites. That there are viable >> alternatives based on unassailable sovereign territory may discourage >> the >> rogue states from making such an effort. >> >> WWVB has a historically transmitted power of 50KW. This is the maximum >> AM >> broadcast band signal transmission power allowed in the USA IIRC for >> about >> 75 years. NIST sates the WWVB antennas having efficiencies of around 57 >> per cent. >> >> Improved transmitting tube technology would easily allow more output >> power. For example Riydah, Saudi Arabia transmits 2 MW on 1201 KHz and >> is >> heard often in North America with a R-390A receiver. >> >> So a massive increase from 50KW to say for example to 500KW and or the >> relocation of the transmitter and antennas to a more geographical >> central >> U.S. state location (such as Iowa) could extend the 100 micro-volt per >> meter signal level radiation pattern over the entire western hemisphere >> and >> provide a high enough micro-volt per meter signal that receivers could >> phase lock on the signal in North America and would not be subject to >> problems of diurnal shift or the new modulation scheme. >> >> Baring an improved WWVB signal strength us time nuts may be forced to >> install 20 to 30 ft. loop antennas when the new system is finalized for >> an >> adequate signal. >> >> Regards, >> >> Perry Sandeen >> >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
