My GoTo RX antenna system is what Tim mentions above (pre-amp and matching unit) plus the AVA-2. I think that is now replaced by the DXE-AVA-3.
It really does a number on QRN and give you a bit more SNR. I have used 2 of them at the same site on a FLEX-6600 in Diversity and it is fun to hear the signals walk around in your head from ear to ear especially if you can get some distance between them. Or, I use the main 160M TX antenna on one receiver and the AVA-2 on the other. You'd be surprised how it varies from RX to RX over the space of a few seconds. At the Urban site (north Toronto) I have one out in the woods behind the house and it just makes Urban HF operation a bit more doable. I don't do HF from the Urban site much, but I know others that do and it makes the difference between hearing and not hearing. Mike va3mw On Thu, Oct 3, 2024 at 11:18 PM Tim Duffy <[email protected]> wrote: > Hello Mike; > > I use this preamp in the shack - at the end of the 50 ohm Heliax that > feeds my RX antennas (very low loss): > https://www.dxengineering.com/parts/dxe-z10046b-pm > > I also match my 75 ohm RX antennas to 50 ohms using this: > https://www.dxengineering.com/parts/dxe-rx75-50-xfmr > > The TS-590SG is an excellent radio > > 73 > Tim K3LR > > -----Original Message----- > From: Mike Fischer [mailto:[email protected]] > Sent: Thursday, October 3, 2024 10:54 PM > To: Tim Duffy > Subject: Re: Topband: VE3DO loop > > Tim, may I trouble you with one more question? > > Could you recommend a low noise preamp that you would use with the VE3DO > (if you would use one of course). > > My rig is a TS-590SG and has a dedicated rx ant port as you probably know… > > Thanks > > Mike > Sent from my iPhone > > > On Oct 1, 2024, at 10:58, Tim Duffy <[email protected]> wrote: > > > > Hello Mike; > > > > There are a few different "receiver guards" out there. If your receiver > guard is a RG5000HD from DX Engineering, you should be OK. As a test, I > have put as much as 25 watts into the RG5000HD and it did not damage the RX > front end. > > > > https://www.dxengineering.com/parts/dxe-rg5000hd > > > > > 73 > > Tim K3LR > > > > -----Original Message----- > > From: Topband [mailto:[email protected]] On > Behalf Of Mike Fischer via Topband > > Sent: Tuesday, October 1, 2024 12:47 PM > > To: [email protected] > > Subject: Topband: VE3DO loop > > > > Hi Tim > > > > Is my receiver guard enough ‘protection’ from my 160 inv L approx 60’ > away from a VE3DO loop? > > > > Thank you sir! > > 73 > > Mike, K7XH > > > > Hello Ed > > > > There is very little interaction between nearby loops. We are studying > > interlaced loops that are 90 degrees to each other for four azimuth > > coverage. I would keep the loops at least 25 feet away from other > radiators. > > Also be careful of RX overload from nearby TX. > > > > 73 > > Tim K3LR > > > > Sent from my iPhone > > > > _________________ > > Searchable Archives: http://www.contesting.com/_topband - Topband > Reflector > > > > > _________________ > Searchable Archives: http://www.contesting.com/_topband - Topband > Reflector > _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
