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Re: The Mode B tradition



I only tried direction finding but it wasn't obvious which house was the 
culprit. If AO-40 had lasted longer, I would have spent more time searchng.

73,

John
KD6OZH

----- Original Message ----- 
From: "John Champa" <k8ocl@hotmail.com>
To: <kd6ozh@comcast.net>; <domenico.i8cvs@tin.it>; <ka1ajf@cox.net>; 
<bill@hsmicrowave.com>; <g0mrf@aol.com>; <brobertson@mta.ca>; 
<amsat-bb@amsat.org>
Sent: Friday, September 15, 2006 05:21 UTC
Subject: RE: [amsat-bb] Re: The Mode B tradition


> John,
>
> The WiFi QRM you experienced on Mode S was probably a WiFi Channel 1 
> device.
> Some APs use that for a default channel, although most use Channel 6.
>
> Did you try using NetStumbler (free software) to determine location?  At 
> 100 mW
> nominal maximum RF power it must be a very local source.  Many times you 
> can just
> ask them to move to one of the channels 7 - 11 (simple software toggle), 
> which in
> the US, is outside the 2.4 GHz Amateur Band.
>
> Just a suggestion.  It's kind of like solving a TVI problem, but in 
> reverse (HI).
>
> 73,
> John - K8OCL
>
>
>
>>From: "John B. Stephensen" <kd6ozh@comcast.net>
>>To: "i8cvs" <domenico.i8cvs@tin.it>, "george abbott" <ka1ajf@cox.net>, 
>>"'Bill Ress'" <bill@hsmicrowave.com>,        "G0MRF David Bowman" 
>><g0mrf@aol.com>, <brobertson@mta.ca>,        "AMSAT-BB" 
>><amsat-bb@amsat.org>
>>Subject: [amsat-bb] Re: The Mode B tradition
>>Date: Fri, 15 Sep 2006 01:51:17 -0000
>>
>>The European contacts are similar to my experience in the U.S. Are you
>>certain that the contacts outside Europe weren't cross-band -- one end UV
>>and the other US or LS? These would also have been completed on UV.
>>
>>My biggest concern about the S downlink is that it is becoming 
>>increasingly
>>harder to use in many parts of the world so that it becomes less and less
>>useful over the life of the Eagle satellites (2010-2030). When AO-13 was 
>>in
>>orbit I could use the S downlink all the time, but by the time AO-40 was 
>>in
>>orbit, I had S9 WiFi interference for hours at a time -- even with 3-foot
>>dish and feed. The dish was fairly deep (0.33 f/d) and the feed shielded 
>>so
>>sidelobes were low.
>>
>>Some in the U.K. say that we'd be better off flyng an S2 downlink
>>(3400-3410MHz).
>>
>>73,
>>
>>John
>>KD6OZH
>>
>>----- Original Message -----
>>From: "i8cvs" <domenico.i8cvs@tin.it>
>>To: "John B. Stephensen" <kd6ozh@comcast.net>; "george abbott"
>><ka1ajf@cox.net>; "'Bill Ress'" <bill@hsmicrowave.com>; "G0MRF David 
>>Bowman"
>><g0mrf@aol.com>; <brobertson@mta.ca>; "AMSAT-BB" <amsat-bb@amsat.org>
>>Sent: Friday, September 15, 2006 01:13 UTC
>>Subject: Re: [amsat-bb] Re: The Mode B tradition
>>
>>
>> > ----- Original Message -----
>> > From: "John B. Stephensen" <kd6ozh@comcast.net>
>> > To: "george abbott" <ka1ajf@cox.net>; "'Bill Ress'"
>> > <bill@hsmicrowave.com>;
>> > <G0MRF@aol.com>; <brobertson@mta.ca>; <amsat-bb@amsat.org>
>> > Sent: Friday, September 15, 2006 1:19 AM
>> > Subject: [amsat-bb] Re: The Mode B tradition
>> >
>> >> You're right. P3E and Eagle will operate similarly to AO-10 and AO-13
>>on
>> >> mode B and P3E is similar to AO-13 on mode S. I don't remember making 
>> >> a
>> >> single S-band contact outside the U.S. on AO-13.
>> >
>> > clipped
>> >
>> >> 73,
>> >>
>> >> John
>> >> KD6OZH
>> >
>> >
>> > Hi John, KD6OZH
>> >
>> > Just for record i have included belowe a list of  OSCAR-13
>> > operators with their call letters and antennas used for downlink
>> > Mode-S from 2400.711 to 2400.747 MHz during the lifetime
>> > of this glourious  U/S transponder
>> >
>> > The power of OSCAR-13  mode-S was only 1,5 W pep and the
>> > satellite antenna was an helix with G=10 dBi and so EIRP=15 W
>> > pep
>> >
>> > In comparison the power of the S1 TX  on AO40 was 50 W
>> > pep and the antenna was an helix with G=10 dBi and so
>> > EIRP=500 W pep
>> > The power of the next P3E will be 38 watt pep with a similar
>> > antenna.
>> >
>> > The mode-S transponder of OSCAR-13 was "hard limited",in
>> > other words no AGC was in it and so the 1,5 W pep
>> > available for all users was proportional to the uplink power.
>> >
>> > At epoch time of this list,uptodate by W4FJ on 14 jan 1994
>> > it was very difficult if not impossible to find ready to operate
>> > preamplifiers/converters antennas/antenna feeds for 2.4 GHz
>> > and the most part of  the equipments  where necessarily hombrew
>> > by amateurs.
>> >
>> > In addition,at that time about 12 years ago,the best GaAsFET
>> > available at amateur price showed a noise figure not less than
>> > 1 dB at 2400 MHz
>> >
>> > Even though the list of users is very long.
>> >
>> > Please read it
>> >
>> > 73 de i8CVS Domenico
>> >
>> > ----------------------------------------------------------------
>> > AMSAT OSCAR 13 mode "S" STATION LIST
>> > Originated by W4FJ last uptodate 14 Jan,' 94
>> > ----------------------------------------------------------------
>> > Sources: K0RZ, DB2OS, JR8XPV, JA6AUX,
>> >              ON6UG, W6ABN, W4FJ
>> > ----------------------------------------------------------------
>> >  CALL        NAME     DOWNLINK ANTENNA
>> >                                        2400.7 MHz
>> > ----------------------------------------------------------------
>> > DA1AF         Bob          4 x 45 loop  yagi
>> > DL1BEM       Andy        1,2 m dish
>> > DL1FCU        Hardy       1,0 m dish
>> > DJ1KM          Rene               ?
>> > DK1KQ         Uwe          67 loop  yagi
>> > DD1US         Mat           19 loop yagi
>> > DF2BX         Theo          3,0 m dish
>> > DK2UT         Archim       0,6 m dish
>> > DK3AX         Gerd          4 x 16 el yagi
>> > DG4IAF       Archim       1,6 m dish
>> > DF4TA         Armin                ?
>> > DL4YCC      Klaus         1,5 m dish
>> > DF5DP        Bert            2 x 39 el yagi
>> > DL5EH        Wilhelm               ?
>> > DJ7FJ          Joseph       1,2 m dish
>> > DC7KY        Klaus         2,0 m dish
>> > DL8NL         Hardy          2,7 m dish
>> > DC8UG        Harold         1,5 m dish
>> > DL9GU         Ed              1,5 m dish
>> > DL9GZ         Egon           4 x 39 ele yagi
>> > DC9HR        Hatman       1,2 m dish
>> > DJ9PC         Peter          1,5 m dish
>> >
>> > EA4LE        Toni           0,6 m dish helix fed
>> >
>> > F6CBC        Jean            1,0 m dish
>> > F8HLG        Georges      18 turn helix
>> > FM5AB       Jean             1,2 m dish
>> >
>> > G1IRG         Simon          1,5 m dish
>> > G2BFO        David           1,2 m dish
>> > G3CDK        Rod             1,2 m dish
>> > G3RUH        James          66 cm dish helix fed
>> > G4EEO        Phil             1,5 m dish
>> > GW3XYW    Stuart           6,0 m dish
>> >
>> > HB9AQZ      Hans            26 turn helix
>> > HB9MGI       Ernst           1,5 m dish helix fed
>> >
>> > i1CDB          Peter            67 loop  yagi
>> > i2BEM          Elio             1,2 m dish
>> > i3EEL           Lodovico      1,2 m dish
>> > iN3HER        Raimund      1,5 m dish
>> > iK3VZS         Vinicio         1,0 m dish
>> > iN3WZF        Joseph         1,5 m dish
>> > iW5ABE       Alex             4 x 18 turn Helix
>> > i5MPK          Peter            4,0 m dish
>> > i6CGE          Alfio              1,2 m dish
>> > i6DRZ           Mario            1,0 m dish helix fed
>> > i6PNN          Amato           1,2 m dish
>> > i7LIT             Rino              1,2 m dish
>> > i7UGO          Ugo               1,0 m dish
>> > i8CVS          Domenico       1,2 m dish helix fed
>> >
>> > JA1ANG       Harry              16 turn helix
>> > JA1ANP        Aky               12 turn helix
>> > JA1AOY        Masaji           2.0 m dis
>> > JR1BDG        Oishi             1.5 m dish helix fed
>> > JA1BLC         Fumie            17 loop yag
>> > JL1CHX         Toshido          3.0 m dish
>> > JA1GYT        Tad                 2 x 37 loop yagi
>> > JK1HIX          Tom               2.0 m dish
>> > JH1LVN         Masa             2 x 45 loop yagi
>> > JH1PEF         Mak              2.4 m dish
>> > JA1QQN        Kazu             36 loop yagi
>> > JA1SYK         Hiro              1.2 m dish
>> > JA1UHY         Hisa              3.0 m dish
>> > JR1WZI          Ken               1.5 m dish
>> > JA2ORW       Jin                  24 turn helix
>> > 7N2RWX        Tada              29 turn helix
>> > JH3EAD         Takao                  ?
>> > JA3THL          Taka              56 loop yagi
>> > JA3GCI             ?                 2 x 23 turn helix
>> > JA4AEP         Ken                1.5 m dish
>> > JA4BLC          Row               6.0 m dish
>> > JR4BRS         Toshi              4.0 m dish
>> > JA4CMZ         Iwata              3.0 m dish
>> > JA4GVA         Shin               0.7 m dish
>> > JA4HZN          Mata              2.0 m dish
>> > JA5LG            Kiyo               2 x 50 loop yagi
>> > JA6AUX          Masa              36 loop yagi
>> > JR6BLW         Mori               4 x 55 loop yagi
>> > JA6CZH          Yamada         1.2 m dish
>> > JE6DBI           Yuu               1.6 m dish
>> > JA6ELW         Sou               4 x 55 loop yagi
>> > JA6FTL             ?                 1.0 m dish
>> > JA7EC            Shoji              2.0 m dish
>> > JH7JKW          Nikio             4.0 m dish
>> > JA8ERE          Terui              3.0 m dish
>> > JA8KCM          Hiro               1.2 m dish
>> > JA8PL             Masa             3.6 m dish
>> > JA8UJR           Masa             2 x 37 loop yagi
>> > JR8XPV           Tango            2 x 40 loop yagi
>> >
>> > OE3JIS            Josef             45 loop yagi
>> > OE5BKL            Al                  ? loop yagi
>> > OE9DGV         Guntran          68 loop yagi
>> > ON4DY            Bob               1.0 m dish
>> > ON6UG            Freddy           2.0 m dish
>> >
>> > OZ8QI              Freddy                 ?
>> >
>> > PE1MGS         Juan                     ?
>> > PT9FH             Tony              2.0 m dish helix fed
>> >
>> > SM7BCL          Lars              2 x 45 loop yagi
>> > SM0SFV          Stig               1.2 m dish
>> >
>> > SV3KH             Nik                2.0 m dish
>> > SV5QR            Panos            1.0 m dish helix fed
>> >
>> > VE1CKE          Norm              1.2 m dish helix fed
>> > VE2LI              George           1.2 m dish  helix fed
>> > VE3GTF          George            2 x 45 loop yagi
>> > VE3NPC          Clare              1.2 m dish helix fed
>> > VE3VC            Ken                1.0 m dish
>> > VE7BGG          Cor                6.0 m dish
>> > VE7CLD           Gunter           4.8 m dish
>> > VE7VHF           Bill                2.4 m dish helix fed
>> > VE7VL             Val                0.8 m dish helix fed
>> > VK4KZR           Rod                         ?
>> > VK4ZQ             Roy               2.8 m dish
>> > VK6BMD          Bruce            1.0 m dish
>> > VK6ZAY           Al                            ?
>> > VK6ZWF          Allen                        ?
>> >
>> > N1AXB             Larry              4 x 45 loop yagi
>> > W1NU             Vic                2 x 45 loop yagi
>> > W1PEA           Judd               2 x 45 loop yagi
>> > W1QJR            Ken               0.6 m dish helix fed
>> > WA1QXR         Ken               1.0 m dish helix fed
>> > W1YN             Ed                 0.6 m dish helix fed
>> > W1SNN           Stirling           4 x 16 turn helices
>> > N1IQU             Mack             8.0 m dish helix fed
>> > K2IYQ             Steve             0.6 m dish helix fed
>> > N2MB             Barry              2.4 m dish helix fed
>> > NQ2O             Walt               2 x 45 loop yagi
>> > W2UHI            Frank             1.0 m dish
>> > N3CEV           Mike                ?     dish
>> > N3FLY             Paul               45 loop yagi
>> > KA3HPQ          Phil                        ?
>> > KK3K              Jim                 1.2 m dish helix fed
>> > W3PM             Gene              1.2 m dish helix fed
>> > W3PRB           Jonny             1.2 m dish
>> > W3QBK           Stan               1.2 m dish helix fed
>> > W3TMZ            Jack               0.6 m dish helix fed
>> > K3VDB            Charlie            0.6 m dish helix fed
>> > KJ4BF             Grady             Conifer dish
>> > KC4CQR          Jerry               3.0 m dish
>> > N4DTB             Lee                 4 x 45 loop yagi
>> > W4FJ               Ted                1.5 m dish helix fed
>> > W4KSB           Larry               2 x 45 loop yagi
>> > AB4NJ             Dale                3.0 m dish
>> > N4NR               Dennis                     ?
>> > N4LC                Ken                4 x 45 loop yagi
>> > WD4O              Bernice           4 x 45 loop yagi
>> > W4ODW           Gene              3.0 m dish helix fed
>> > K4RZB              Jim                4 x 45 loop yagi
>> > WA4VHF          Chip               1.2 m dish helix fed
>> > N5BF               Courtney          45 loop yagi
>> > W5GEL            Bob                 1.2 m dish helix fed
>> > WB5GQM         Fred               0.6 m dish helix fed
>> > W5IU                Keith              1.0 m dish helix fed
>> > K5RHR             Dick                0.6 m dish helix fed
>> > WA5RTL           "BW"                         ?
>> > W6ABN            Stan               1.2 m dish helix fed
>> > W6CCY            John               0.6 m dish helix fed
>> > AB6DT              Bob                        ? loop yagi
>> > WB6GYD          Eric               1.5 m dish
>> > NK6K                Harold            4 x 45 loop yagi
>> > W6KAG            Butch             3.0 m dish helix fed
>> > WB6LLO           Dave              1.0 m dish helix fed
>> > N6OVP             Dave                           ?
>> > W6YVO            Dick                           ?
>> > AA7A                Ed                 0.6 m dish helix fed
>> > WA7ABP          Lynn              1.2 m dish helix fed
>> > KB7CNN            Bill                2 x 45 loop yagi
>> > W7IUV              Larry              3.0 m dish helix fed
>> > KE7NR              Don               2 x 45 loop yagi
>> > N7RYW             Bill                2.0 m dish
>> > K7ZTM              Pete              2 x 45 loop yagi
>> > N8AJD              Steve             45 loop yagi
>> > K8TL                 Tom               1.2 m dish helix fed
>> > WA8WBP          Ralph            1.2 m dish helix fed
>> > K8YAH              Ron               2 x 45 loop yagi
>> > WJ9F                Russ              2 x 45 loop yagi
>> > W9FMW            John              2 x 45 loop yagi
>> > KA9LNV             Ed                0.6 m dish helix fed
>> > WA9MTO           Jack              2 x 45 loop yagi
>> > AB9V                 Mike              45 loop yagi
>> > W0DQY             Smitty            4 x 45 loop yagi
>> > WD0E                Jim                0.6 m dish helix fed
>> > W0HHE              Al                  2.0 m dish
>> > K0KE                 Eric                2.0 m dish
>> > N0LEF                Stu                2 x 45 loop yagi
>> > KA0OOQ            Jerry              4 x 45 loop yagi
>> > K0RR                 Lew                2 x 45 loop yagi
>> > K0RZ                  Bill                1.2 m dish helix fed
>> > K0VTY                Joe               1.2 m dish helix fed
>> > N0WX                 Charlie           2 x 45 loop yagi
>> >
>> > ZL2ALP               Paul              45 loop yagi
>> >
>> > ZS6JT                 Peter              0.6 m dish helix fed
>> >
>> > NOTE:
>> > This list of OSCAR-13 Mode-S operators was
>> > uptodated by Ted W4FJ on 14 january 1994
>> >
>> >
>> > 73"  de
>> >
>> > i8CVS Domenico
>> >
>> >
>> >
>>
>>_______________________________________________
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>
> 

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