wales@UCLA-LOCUS.ARPA (07/17/84)
From: Rich Wales <wales@UCLA-LOCUS.ARPA> For as long as I can remember, whenever I have tried to pick up the Canadian time-signal station CHU on 7.335 MHz, the signal has always been overlaid with what sounds like a very loud hum or roar. This interference is often so strong that I can't copy CHU at all. Does anyone out there know what this interference is? In case it makes any difference, I have done all my listening from California. -- Rich <wales@UCLA-LOCUS.ARPA> ucbvax!ucla-cs!wales
ron@brl-tgr.ARPA (Ron Natalie <ron>) (07/19/84)
Funny, I've always gotten CHU reception better than WWV. -Ron
karn@mouton.UUCP (07/20/84)
For me (on the East coast) I've always gotten CHU on 7.335 very well during the day. In the evenings, some high speed RTTY service comes up just below frequency, but using USB (CHU suppresses its lower sideband anyway) seems to fix that problem. Phil
parnass@ihuxf.UUCP (Bob Parnass, AJ9S) (07/20/84)
The interference may be due to radiation from neighborhood television receivers or VCRs. Try a CHU listening test at 4 am. -- =============================================================================== Bob Parnass, Bell Telephone Laboratories - ihnp4!ihuxf!parnass - (312)979-5414
parnass@ihuxf.UUCP (Bob Parnass, AJ9S) (07/22/84)
According to my records: -The US Navy is allocated 7.336 MHz for 10,000 watt coastal stations using emissions of 0.1A1, 1.24F1, 3A7J, and 2.8A3J along the Atlantic Seaboard, especially in Virginia. -The US Air Force is allocated 7333.5 MHz for fixed and mobile use USA-wide, but only for 3A3J emission at the 500 watt level. -- =============================================================================== Bob Parnass, Bell Telephone Laboratories - ihnp4!ihuxf!parnass - (312)979-5414