| |
KB2VXA > SETI 04.12.04 02:14l 39 Lines 1475 Bytes #999 (0) @ WW
BID : 31848_WT3V
Read: GUEST
Subj: Re: VK2AAB > Pi in the ski
Path: DB0FHN<DB0MRW<DB0ERF<DB0FBB<DB0BI<DB0PRA<ON0RET<DB0RES<ON0AR<VE2RXY<
VA2BBS<VE2TOY<VA2CEV<K1UOL<K2PUT<WB2QJA<KC2COJ<WT3V
Sent: 041203/1443Z @:WT3V.#CNJ.NJ.USA.NOAM #:31848 [Lakehurst] $:31848_WT3V
From: KB2VXA@WT3V.#CNJ.NJ.USA.NOAM
To : SETI@WW
Hi Barry and ETs,
I see you didn't use the electronic quote system this time, you spelt it
"sky" instead of ski. (;->)
Yes, SETI and many other radio observation studies use two or more widely
spaced antennas to eliminate TI possibilities from corrupting the
collected data and pinpoint the source of emissions. The story I heard
was one of the receiving sites or the link to it was down and only a
single antenna was in service at the time. I guess "urban legends" have
their variations. Oh, optical systems are similarly configured for
similar and more reasons.
It sort of reminds me of the old dual diversity receiving systems used by
the military and others in the days of AM to reduce the effects of
selective fading. The R-390 receiver among others of the day have line
outputs for connecting them via dry class 1 telephone lines.
No, they're not dry in that sense, dry means no DC component as in the
common wet line you talk on normally. The old fashioned local battery and
magneto telephones used dry lines, today a common battery wet line system
is used for the copper or "local" loop.
73 de Warren, KB2VXA@WT3V.#CNJ.NJ.USA.NOAM
Powered by JCP&L atomic energy.
E-MAIL: kb2vxa@swissinfo.org
**************************************
Preserve the integrity of our network.
Stop Internet forwarding, use RADIO!
**************************************
Message timed by NIST: 14:58 on 2004-Dec-03 GMT
Read previous mail | Read next mail
| |
