Re: Topband: Signal source

["Tom W8JI" <w8ji@w8ji.com>]

There are hundreds of devices in that range that are complete oscillators.


http://www.mouser.com/Passive-Components/Frequency-Control-Timing-Devices/Oscillators/_/N-7jdfi?P=1z0who4Z1z0wmtcZ1z0wntsZ1z0j6vwZ1z0z7l5Z1z0z6sr&Keyword=1.843&FS=True

----- Original Message ----- 
From: "Tree" <tree@kkn.net>
To: "George Dubovsky" <n4ua.va@gmail.com>
Cc: "Clive GM3POI" <gm3poi2@btinternet.com>; "TopBand List" 
<topband@contesting.com>
Sent: Tuesday, November 25, 2014 10:10 AM
Subject: Re: Topband: Signal source


> All good ideas thus far.
>
> This is a handy device to have for other purposes and would work well for
> your application as well Clive.
>
> http://www.elecraft.com/XG3/xg3.htm
>
> Tree N6TR
>
> On Tue, Nov 25, 2014 at 4:55 AM, George Dubovsky <n4ua.va@gmail.com> 
> wrote:
> > I should add that all of the LS04 outputs are summed through 270 Ohm
> > resistors, giving something close to 50 Ohms output. At any rate, I think 
> > I
> > get something like 0 dBm into 50 Ohms, with the switchable attenuator
> > dropping it down to -20 dBm. Good level for rx antenna experiments.
> >
> > 73,
> >
> > geo - n4ua
> >
> > On Tue, Nov 25, 2014 at 7:45 AM, George Dubovsky <n4ua.va@gmail.com>
> > wrote:
> >
> > > Nothing original here, but I use a cheap 1.8432 packaged logic-level
> > > oscillator driving all the gates of a 74LS04 in parallel, followed by a
> > > switchable 20 dB pad, all packaged up in a small minibox. I run it off 
> > > a
> > > 12V gel-cell.
> > >
> > > 73,
> > >
> > > geo - n4ua
> > >
> > > On Tue, Nov 25, 2014 at 7:29 AM, Clive GM3POI <gm3poi2@btinternet.com>
> > > wrote:
> > >
> > >> Hi, Can anyone recommend a stable low power signal source suitable for
> > >> tweaking RX antennas. I only need 160m and will only be used within 
> > >> say
> > 10
> > >> wavelengths. Preferably something off the shelf. Thanks Clive GM3POI
> > >>
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