Maybe your transceiver. Mine have a seperate receive antenna port as built that can easily be returned to the TX antenna with a toggle switch.
The alternative is a high isolation coax relay that only needs to handle the xcvr power. There are many 12 and 24VDC versions at hamfests, etc. Carl KM1H ----- Original Message ----- From: "Michael G. Carper" <[email protected]> To: <[email protected]> Sent: Tuesday, September 06, 2011 10:59 PM Subject: Re: Topband: New entry to TopBand with antenna question > Pardon me for asking a dumb question... but how do you guys switch between > the beverage antenna and the inverted-L... given that your XCVR has only a > single antenna port for both TX/RX? > > Mike, WA9PIE > > > -----Original Message----- > From: Michael G. Carper [mailto:[email protected]] > Sent: Monday, September 05, 2011 8:01 PM > To: [email protected] > Subject: RE: Topband: New entry to TopBand with antenna question > > Okay... great responses all. Here's what I think I'm gonna do... > > I'll go vertical with an inverted L. I'm thinking to be resonant around > 1.825MHz, I'll need about 128.2' of wire. I'll go up about 70'... then > the > rest will be almost exactly horizontal. I'll go with at least a dozen > elevated radials about 134.8' long. I'll terminate those at a post where > I'll have an insulator for the "driven element" and one where the radials > terminate. I'll stick an SO-239 there to make things easy. I figure this > should be resonant at the chosen frequency. > > Later, I'll put up at least one beverage antenna for receive (but there's > no > way I'll have a chance to do that initially). Does that sound reasonable > as > a starting position? > > Thanks to all who talked me out of the B&W Folded Dipole. > > Mike, WA9PIE > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] > On Behalf Of Michael G. Carper > Sent: Sunday, September 04, 2011 11:06 PM > To: [email protected] > Subject: Topband: New entry to TopBand with antenna question > > Hey folks. > > > > I've been a ham for 37 years, but I've spent my entire ham "career" on > 80-10m (with the exception of 7 countries worked on 160m about ten years > ago). For the most part, the same obstacle has kept me off TopBand that > prevents most - antenna space. > > > > Now that I've made DXCC on all bands 80-10m (and very close on 6m). and > since we've recently moved to a place with 7-acres and a nice tall > tree-line, I figure my options for 160m are better. That said - we're > leasing this place and I've probably got 2-years here. > > > > My goal is simple - make DXCC on 160m within the next 2 years. > > > > So I'm looking for some advice about the antenna. > > > > I'm very tempted to buy a B&W folded dipole and call it done. but I'm > curious about what others are doing. I've got an amplifier, but no > high-power tuner. So I want to avoid a tuner - the folded dipole seems to > get me there and I can put it up at 70' or so in the elm trees. > > > > Thoughts? > > > > Mike, WA9PIE > > > > _______________________________________________ > UR RST IS ... ... ..9 QSB QSB - hw? BK > > > _______________________________________________ > UR RST IS ... ... ..9 QSB QSB - hw? BK > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 10.0.1392 / Virus Database: 1520/3881 - Release Date: 09/06/11 > _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK
