From nobody Fri Nov 19 19:11:16 2021 X-Original-To: freebsd-net@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 69988189D1F1 for ; Fri, 19 Nov 2021 19:11:31 +0000 (UTC) (envelope-from jim@netgate.com) Received: from mail-io1-xd2f.google.com (mail-io1-xd2f.google.com [IPv6:2607:f8b0:4864:20::d2f]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1D4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4HwmVW0kn1z4WVb for ; Fri, 19 Nov 2021 19:11:30 +0000 (UTC) (envelope-from jim@netgate.com) Received: by mail-io1-xd2f.google.com with SMTP id p23so14087476iod.7 for ; Fri, 19 Nov 2021 11:11:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=netgate.com; s=google; h=content-transfer-encoding:from:mime-version:subject:date:message-id :references:cc:in-reply-to:to; bh=awQVbJkpG9BwPYifQ77rTAoetG2TDJ3FuHTwx93eZV8=; b=jjf/VArL9umzGxPyXLt2zp1Jf+QNtQMhg6Ag8A+u2nqPi+5GWxu0zQfS1LcJhP2sqN aZAQ/IQ4b5s/LIXKmoP/Na8C2W0lknyNugZDnBH4LWCZUElq47ZLVTRzn8tMwwqPli/D Ib+HRo3QD6n5lpliBaQvqTTIlt1lRzwCegFCE= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:content-transfer-encoding:from:mime-version :subject:date:message-id:references:cc:in-reply-to:to; bh=awQVbJkpG9BwPYifQ77rTAoetG2TDJ3FuHTwx93eZV8=; b=jS5hf4CvLcM2rjxKWOYSvtRAhlX7nEazP48MKpkxvj1F4s9e5YjjezCAX9D4p9pvSU 7qgJdaUbnvTdHcZ8tdBKYc4f6Ni+xx4ctKkbjoBlM25uQJTrVk8/J8zRw/nVVtpMUJ4L Z1FLYSg+JB7AkxHOzWAtCigsN5oh6C2SMVGTgkCYDujt9IDwZZjLSlVXRI4ug9Duxoq4 vf2TzIj33MaNq+eyX6FVl/dxHxxZGO8Re0vb6N0jLnyHtq1uVJ4WOJ9WB5zg9PUtGeJi qEaALwhwAOaObwzc/HOqVP1b3sH2ywTHYY7IkgXOBCnTbmYx3s5ZWixCpMaa+UtQ21f2 4YQg== X-Gm-Message-State: AOAM532yR/Az44l4o0rZhmdNPCrTc5OMfNOjkH664tzErkikTnbUSNke qmGA1spt4Smkmt+oMPooPM+RrAw4jaLq4Q== X-Google-Smtp-Source: ABdhPJwpPImewWEqa6muxhoKfkQXWH/70m66gH5MsmmxYx9fcH8ke+urnNYXKIDqEVfDNtoltF2HXw== X-Received: by 2002:a05:6602:134d:: with SMTP id i13mr7390675iov.164.1637349081219; Fri, 19 Nov 2021 11:11:21 -0800 (PST) Received: from smtpclient.apple ([2601:280:5b80:b910:95dc:9601:31e7:66fa]) by smtp.gmail.com with ESMTPSA id i1sm445606iov.10.2021.11.19.11.11.19 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 19 Nov 2021 11:11:20 -0800 (PST) Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@freebsd.org Mime-Version: 1.0 (1.0) Subject: Re: Splitting antenna Date: Fri, 19 Nov 2021 12:11:16 -0700 Message-Id: <70CD396F-2067-4EC1-9190-9D61E0AE1720@netgate.com> References: Cc: freebsd-net@freebsd.org In-Reply-To: To: D'Arcy Cain X-Mailer: iPhone Mail (19B81) X-Rspamd-Queue-Id: 4HwmVW0kn1z4WVb X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; none X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[] Reply-To: jim@netgate.com From: Jim Thompson via freebsd-net X-Original-From: Jim Thompson X-ThisMailContainsUnwantedMimeParts: N (When did FreeBSD-net become about antenna theory?) The answer (of course) is, =E2=80=9Cit depends=E2=80=9D. Mostly on =E2=80=9C= what bands=E2=80=9D though your antenna and cables will have some effect as w= ell.=20 Some WiFi cards these days employ a form of beamforming or even MIMO. Older= cards could use selection diversity to enhance reception. Some cards are,= as you say, architected to have a 2.4ghz chain on one antenna and a 5ghz ch= ain on another.=20 So we=E2=80=99d have to know more about your wifi card as well.=20 Jim > On Nov 19, 2021, at 11:26 AM, D'Arcy Cain wrote: >=20 > =EF=BB=BFI am using my FreeBSD box as my main ingress to my RV trailer. W= e move around and sometimes use Ethernet, sometimes PPP directly on DSL and s= ometimes we connect to a local wifi hotspot. To get the best connection I h= ave mounted an external, multi-band antenna on the trailer and connect it to= one of the antenna connections on the wifi card. >=20 > My question is, can I split the antenna connection and use both antenna co= nnectors on the wifi card (or three if I have that kind of card) or will tha= t mess up the connection. I know that each connection is for a different ba= nd. Different camp grounds use different bands and sometimes I need to swit= ch the antenna to get a better Internet connection. It would be nice if I c= ould just have both of then connected to the external antenna. >=20 > Cheers. >=20 > --=20 > D'Arcy J.M. Cain | Democracy is three wolves > https://www.google.com/url?q=3Dhttp://www.druid.net/darcy/&source=3Dgmail-= imap&ust=3D1637951204000000&usg=3DAOvVaw3DZfT_F4PSDdMhMGL1LuAe = | and a sheep voting on > +1 416 788 2246 (DoD#0082) (eNTP) | what's for dinner. > IM: darcy@VybeNetworks.com, VoIP: sip:darcy@druid.net