[Elecraft] Elecraft XV transverter manual now on our web page

[Robert Friess]

Hi Ken,

Interesting that you should ask.  I intended that the LO goes off whenever a
transverter was off line.  The idea was to prevent any problem that a bunch
of unnecessary oscillator running might cause.  However, Ron the manual
writer tells me that the oscillators remain on until the main power is
turned off.  I'll check that out in the next day or so and report back to
you.

Aside from what it actually does at the present time, I think that it would
be a useful strapping option to allow the oscillators to continue to run
even if a transverter is off-line.  That is especially so if the optional
crystal oven is installed.  The next board rev will provide for that strap.

73,
Bob, N6CM


----- Original Message -----
From: "Kenneth E. Harker" <kharker@cs.utexas.edu>
To: "Eric Swartz WA6HHQ - Elecraft" <eric@elecraft.com>
Cc: "Elecraft List" <elecraft@mailman.qth.net>
Sent: Monday, August 11, 2003 1:51 PM
Subject: Re: [Elecraft] Elecraft XV transverter manual now on our web page


> On Mon, Aug 11, 2003 at 11:33:25AM -0700, Eric Swartz WA6HHQ - Elecraft
wrote:
> > Hi,
> >
> > We have just uploaded the Field Test version of the XV manual to our web
> > page. It covers the XV-50, 144 and 222 kits.  It can be found on our
> >  manual download page and the XV Transverter information page.
>
> I've read through page 72-74 ("Circuit details") but I don't really see an
> answer to a question I have had in the back of my brain.
>
> If I daisy chain three XV transverters with my K2/100, and I have the XV50
> selected, change bands to the XV144, and then return to the XV50, does the
> XV50 get turned off completely while I am using the XV144?  In particular,
> does the local oscillator power down while I'm on the other band?  Or do
> just the downconvert sections shut down?  Or is just that relays route the
> RF to the correct transverter while all the transverters are still powered
up?
>
> For VHF contesting, where you might be switching bands very frequently, it
> would be a major pain to have the local oscillator power cycling all the
time.
> On the other hand, you don't necessarily want your 222.100 transverter
> and 432.100 transverter downconvert sections both running with just a
relay
> between them - there will be bleed through on strong signals.  Downeast
> Microwave transverters have the ability to turn their downconvert sections
> on and off while leaving the local oscillator on - which may be what the
XV
> series transverters do with their switching, but it's hard to tell from
> the manual.
>
> --
> --------------------------------------------------------------------------
--
> Kenneth E. Harker      "Vox Clamantis in Deserto"
kharker@cs.utexas.edu
> University of Texas at Austin                   Amateur Radio Callsign:
WM5R
> Department of the Computer Sciences          Central Texas DX & Contest
Club
> Taylor Hall TAY 2.124                         Maintainer of Linux on
Laptops
> Austin, TX 78712-1188 USA
http://www.cs.utexas.edu/users/kharker/
> --------------------------------------------------------------------------
--
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