Date: Sun, 1 Apr 2007 22:33:55 +0200
From: <[EMAIL PROTECTED]>
Subject: Re: [Flexradio] Transverters
To: "David Hilton-Jones" <[EMAIL PROTECTED]>,
"flexradio" <flexradio@flex-radio.biz>
Hi David
I have no experience with transverters on the SDRik,
I expect that a chain of 2 transverters in series
28MHz <<>> 144MHz <<>> 1296MHz
will act as one transverter from 28MHz <<>> 1296MHz
Maybe you can try it this way.
I hope that it is possible, an that the frequency counts the
right direction, not the other way, reason is then the
oscillator frequency of the transverter(s)
Sorry that I can not help you right away, Someone else on the list?
happy experimenting 73 peter pa0pvn
groeten Peter
petervn(a)hetnet.nl <mailto:[EMAIL PROTECTED]> ; pa0pvn(a)hetnet.nl
<mailto:[EMAIL PROTECTED]> ;
pa0pvn(a)gmail.com ; pa0pvn(a)amsat.org .
________________________________
Van: [EMAIL PROTECTED] namens David Hilton-Jones
Verzonden: zo 1-4-2007 14:11
Aan: flexradio
Onderwerp: [Flexradio] Transverters
I have been used to getting a reply to my queries within seconds from
the ever-helpful Flexers. The fact I haven't had a reply to my last
query makes me fear I've asked a very stupid question! I'd appreciate a
comment in response to the following:
Having had fun playing with my SDR-1000 with 1 watt on HF, it's now
time to get it tamed for VHF work, which was the object of my purchase.
I have the 144MHz DEM transverter installed. I will be using that to
drive transverters for other VHF/UHF bands. If, for example, I am using
a 144-1296 transverter, I presume I have to click on the 2 metre button
and with the 144-1296 transverter connected to the 144 connections will
be QRV on 1296. is it possible to get the display to show 1296 rather
than 144?
As far as I can tell, the XVTR Setup only works when using an HF signal
to drive the transverter from the HF output of the SDR, or am I missing
something?
73
David, G4YTL
David your thinking is correct regarding transverters to cover other bands
beyond 2 meters.
The HF block is used as the IF so we only require the card for the band of
our choice.
With the basic SDR 1000 trx hardware which I think it's a basic 160 to 10
meter standard for amateur use.
>From 2 m and up we just add another converter card to suit the band of our
choice.
For transmitting on vhf to uhf it gets a little complicated.
The design of the transverter card caters for the transmitter and the
receiver.
The hardware switching and the software upgrade is the challenge.
It's normal that the frequency readout will read the IF frequency which in
most cases the 10 meter band say 28 to 30 mhz.
cheers,
Aisea, 3D2AA
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