KRX3 independance RX Main Ant1 Sub Ant2 possible?
Locked
KRX3 independance RX Main Ant1 Sub Ant2 possible?
 
|
Hi,
using FW 3.03. KRX3 installed. Cable routed to Aux-Connecter not to KAT3. Is it possible to receive with main receiver on 80m at ANT2 e.g. and with sub receiver on 20m at ANT1. If I switch sub-receiver outside the band of main, it switches to aux connector. If I route the cable to KAT3 is it till then possible to use different antennas? 73 Frank DL2GRF |
Re: KRX3 independance RX Main Ant1 Sub Ant2 possible?
|
|
Frank,
If the frequency on the main receiver is lower than that of the sub, you may be greeted by a message that says USE AUX. There is a Low Pass Filter associated with the main receiver (and transmit signal). If that low pass filter is also placed between the sub-rx and the antenna, higher frequencies will be severely attenuated - thus the message USE AUX. The Auxiliary antenna input to the sub does not have a low pass filter in the path. 73, Don W3FPR Frank DL2GRF wrote: > Hi, > using FW 3.03. KRX3 installed. Cable routed to Aux-Connecter not to KAT3. Is > it possible to receive with main receiver on 80m at ANT2 e.g. and with sub > receiver on 20m at ANT1. If I switch sub-receiver outside the band of main, > it switches to aux connector. > If I route the cable to KAT3 is it till then possible to use different > antennas? > 73 Frank DL2GRF > > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Re: KRX3 independance RX Main Ant1 Sub Ant2 possible?
|
|
Don,
thank you for explanation! If I have selected on 20m main receiver to ANT1 (Beam) and switch the sub-receiver on 80m I have the chance to switch between AUX and ANT1. But not to ANT2 (80m Dipol). That´s not possible? Another question: At AUX connector I have an active antenna dx-one from RF systems. Transmitting during on air period is allowed from manufacturer. It would be not destroyed. But strong receive level coming through the aux input of K3. I think it is protected against own transmission. But if I transmit with an other transceiver he get the full rx level to sub receiver and could damage. What do you think? 73 Frank
|
Re: KRX3 independance RX Main Ant1 Sub Ant2 possible?
|
|
Frank,
The AUX ANT input to the sub has a COR (carrier operated relay) included as a protective device. See the antenna routing configuration possible in the manual starting at page 41. If you hear a relay clicking as you transmit, you may want to check the amount of RF that is coming from your receive antenna. The K3 T/R switching is all electronic, no relays should operate. 73, Don W3FPR Frank DL2GRF wrote: > Don, > thank you for explanation! If I have selected on 20m main receiver to ANT1 > (Beam) and switch the sub-receiver on 80m I have the chance to switch > between AUX and ANT1. But not to ANT2 (80m Dipol). That´s not possible? > Another question: At AUX connector I have an active antenna dx-one from RF > systems. Transmitting during on air period is allowed from manufacturer. It > would be not destroyed. But strong receive level coming through the aux > input of K3. I think it is protected against own transmission. But if I > transmit with an other transceiver he get the full rx level to sub receiver > and could damage. What do you think? > 73 Frank > > Don Wilhelm-4 wrote: > >> Frank, >> >> If the frequency on the main receiver is lower than that of the sub, you >> may be greeted by a message that says USE AUX. >> >> There is a Low Pass Filter associated with the main receiver (and >> transmit signal). If that low pass filter is also placed between the >> sub-rx and the antenna, higher frequencies will be severely attenuated - >> thus the message USE AUX. The Auxiliary antenna input to the sub does >> not have a low pass filter in the path. >> >> 73, >> Don W3FPR >> >> Frank DL2GRF wrote: >> >>> Hi, >>> using FW 3.03. KRX3 installed. Cable routed to Aux-Connecter not to KAT3. >>> Is >>> it possible to receive with main receiver on 80m at ANT2 e.g. and with >>> sub >>> receiver on 20m at ANT1. If I switch sub-receiver outside the band of >>> main, >>> it switches to aux connector. >>> If I route the cable to KAT3 is it till then possible to use different >>> antennas? >>> 73 Frank DL2GRF >>> >>> >>> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[hidden email] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> >> >> > > > ------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.0.238 / Virus Database: 270.11.22/2015 - Release Date: 03/20/09 19:01:00 > > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
«
Return to Elecraft
|
1 view|%1 views
| Free forum by Nabble | Edit this page |