I'm guessing, but wouldn't this also attenuate your receive
signal?
which of course would be very undesirable.
If you can only install it on the transmit side then
no problem. The ARRL handbook also has tables for attenuators.
73,
Bill
WF4R
Tom Carney wrote:
>
> An excellent idea Ron. Here is a link to a useful web site to do the
> calculations. Looks like about 74 ft of RG-174 will do the trick.
>
> http://www.ocarc.ca/coax.htm
>
> 73 Tom KE6FI
>
> ----- Original Message -----
> From: "Rogers, Ron" <RR124640@Exchange.AtlantaGA.NCR.com>
> To: "'Rick Stoneking'" <w2rds@arrl.net>; <vhfcontesting@contesting.com>
> Sent: Tuesday, September 02, 2003 7:25 AM
> Subject: RE: [VHFcontesting] Transmit Attenuator
>
> > Calculate a length of RG-174 or RG-58 based on it's rated loss at 144 Mhz.
> > Install BNC connectors and coil it up. Makes a cheap power attenuator.
> > Verify the loss by measuring power output at the other end into 50 Ohm
> load.
> > Have done this for many a transverter and for reduced drive into high gain
> > amplifiers for repeater service.
> >
> > Ron Rogers
> > -WB8ERB-
> >
> >
> > -----Original Message-----
> > From: Rick Stoneking [mailto:w2rds@arrl.net]
> > Sent: Tuesday, September 02, 2003 10:13 AM
> > To: vhfcontesting@contesting.com
> > Subject: [VHFcontesting] Transmit Attenuator
> >
> >
> > I need to attenuate a 12W output (144MHz) down to 2W to drive a 903MHz
> > transverter. The radio's ALC circuit does not appear to be working so I
> am
> > trying to find out if there is a something I can buy or build to attenuate
> > the signal. Does anyone have any experience/suggestions?
> >
> > Thanks,
> > Rick
> > W2RDS
> >
>
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