That is what I thought but I just wanted to confirm it. Thanks, Vern
On Thu, 18 Oct 2007 09:32:46 -0600 "de W5DK" <[EMAIL PROTECTED]> wrote: > No, that black coax is plugged into the normal >connection when no preamp is > installed, the preamp would be in the hole/area to the >left of that RCA > termination you have now, you do NOT have a preamp in >that mobile. > > 73 > > Don W5DK > > > >From: [email protected] > [mailto:[EMAIL PROTECTED] On Behalf Of >[EMAIL PROTECTED] > Sent: Thursday, October 18, 2007 7:50 AM > To: [email protected] > Subject: Re: [Repeater-Builder] MASTR II > > > > I guess it would be helpful if I gave more detail on the > repeater. It's VHF and its built on a mobile MASTR II. > > Here is a picture of it. > http://www.highwayusa.com/mastrII/mastrII.jpg > > Is the block that the recv port is pluged into a preamp >or > is that the normal place for it to plug in? > > Thanks, > Vern > > On Thu, 18 Oct 2007 03:03:27 -0600 > Nate Duehr <[EMAIL PROTECTED] ><mailto:nate%40natetech.com> > wrote: >> >> On Oct 17, 2007, at 7:26 PM, [EMAIL PROTECTED] >><mailto:no6b%40no6b.com> > wrote: >> >>> The P1dB point on the UHF UHS preamp I measured was only >>>+1.5 >>> dBm. However, it's much narrower than any standalone >>>preamp you >>> can buy >>> off the shelf, so it has some inherent out-of-band >>>rejection. I >>> measured a >>> noise figure of 4.6 dB, which sounds a bit high but it's >>>a LOT >>> lower than >>> the noise figure of a stock UHF GE MVP/Mastr II/Exec II >>>RX. I just >>> installed a VHF UHS preamp in my latest 2 meter >>>portapeater & am >>> very happy >>> with its performance so far. >> >> By the way, for a photo of a UHF UHS pre-amp, or if >>you're looking to >> buy one -- assuming this one is working -- there's one >>on eBay right >> now... >> >> <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem > <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=300160564470> > &item=300160564470> >> >> It's a UHF "88-split" version. >> >> As you can see, it's just a little square-shaped board >>that installs >> in the "hole" to the right of the receiver's RCA input >>connector, if >> you're looking at the receiver with the helical casting >>and coils to >> your left. >> >> The RCA connector on it is your new "receiver/antenna >>input", and the >> little cable and male RCA goes over to the receiver >>input. The >> little red wire in the photo is to get power into it. >> >> -- >> Nate Duehr, WY0X >> [EMAIL PROTECTED] <mailto:nate%40natetech.com> >> >> >> > > >
