[amsat-bb] (no subject)
n6jsx at yahoo.com
Sun Feb 19 20:09:07 UTC 2017
FT-767GX, IC-271/471, IC-7000, only my IC-9100 can do this (Set Mode items 45/46/47 'pre-amp', unknown voltage/max-current as manual does not state).
Hence why most older radios need to have a shack external coax-VDC injector/RF-filter device to make work.
Dale Kubichek, MS-EET, N6JSX
From: Greg D <ko6th.greg at gmail.com>
To: Dale Kubichek <N6JSX at Yahoo.com>; "amsat-bb at amsat.org" <amsat-bb at amsat.org>
Sent: Sunday, February 19, 2017 2:39 PM
Subject: Re: [amsat-bb] (no subject)
What rig are you using in the shack? Many of them have the option to
power a pre-amp via the coax, though sometimes this requires opening the
box up to move a jumper.
Dale Kubichek via AMSAT-BB wrote:
> These are very good devices (lil pricey), but an issue I found is they do not sell the shack-coax-end 'voltage input/isolation' box/device to power these via coax.
> Just like I'd like to find a solid low-loss on-mast two-position-coax-switch to be controlled via ~12VDC from the shack coax. Making changing CP or Vet/Horz easy with only one coax feed. I want them for 2m/70cm/1.2G. MFJ has one but it's not rated for >150MHz.
> Best regards,
> Dale Kubichek, MS-EET, N6JSX
> Sidney, OH 45365 EN70vh
> Message: 2
> Date: Sat, 18 Feb 2017 20:34:38 -0500
> From: Paul Stoetzer <n8hm at arrl.net>
> To: "kb2cwn at yahoo.com" <kb2cwn at yahoo.com>
> Cc: "amsat-bb at amsat.org" <amsat-bb at amsat.org>
> Advanced Receiver Research has the most cost effective mast-mounted RF
> switched preamps.
> SSB Electronics' line of preamps might be better, but are more expensive.
> Paul, N8HM
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