If you run Ham Radio Delux I believe it calculates the SWR and displays it on the screen in the upper left corner.
Greg AB7R -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of William Bordy Sent: Tuesday, December 06, 2005 3:16 PM To: 'Christoph - HB9AJP'; 'Wallace Watson'; FlexRadio@flex-radio.biz Subject: Re: [Flexradio] ATU not tuning Hi Chris, Where are you measuring the SWR? If it is external to the SDR1000, I don't believe you will see a change. The SWR should change at the 100W amp output. The only way to check this is to read the FWD and REV power readings on the PowerSDR console and do a SWR calculation. When the ATU is installed, PowerSDR does not provide an SWR reading. It seems that it could do the calculation, but a SWR output meter reading is not provided. 73, Bill NJ1H -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Christoph - HB9AJP Sent: Tuesday, December 06, 2005 4:26 PM To: Wallace Watson; FlexRadio@flex-radio.biz Subject: Re: [Flexradio] ATU not tuning Hello Wally, when hiting TUN the carrier gets on (10W), then comes the red led and after abt 1s the red goes off. After a fraction of a second the red geos on again while the relays start clicking. After abt 1s the green led starts to flicker. Then the relays stop clicking and at the same time the red gets off and the green stays on permanently. Then the carrier gets off and after a fraction of a second the green led gets off. During the whole time the VSWR stays unchanged (e.g. 1:3) and the power meter moves a little bit. So I guess the behaviour of the tuning cycle seems to be ok but still it does not tune. (I also located and checked the jp1 jumper pads: the resistance reads infinity). Any suggestions? 73 Chris, HB9AJP Wallace Watson schrieb: > Greetings Christoph, > I also experienced the problem you have described when I obtained my > SDR-ATU and installed it in the SDR-1000 in May 2005. My version of the > ATU did not contain the red and green LED's which indicate the status of > the ATU. After several exchanges with Gerald Youngblood, he advised > that several of the early ATU Z-100's obtained from LDG were assembled > without the addition of these LED's. This I corrected by obtaining the > LED's from Gerald at Flex-Radio and installing them on my ATU unit. > > In order for the ATU to function correctly, you must be using PowerSDR > verion 1.4.5 Beta 6 or later due to a software bug discovered in the > earlier versions of software. What indication on the RED and GREEN > LED's are you observing when you tune the SDR? > > The problem that I eventually discovered was a solder bridge short on > the bottom of the 100W Amp board at the point of the ATU jumper pads. I > read a .2 ohm short with the jumper cut and should have read infinity on > my digital ohmmeter. I discussed this discovery with Gerald from > Flex-Radio and we concluded that a short must exist, Gerald advised the > procedure for removing the 100W amp from the SDR case and removal of the > printed circuit board from the Amps heat-sink. Upon performing this > disassembly I found a blob of solder bridging the jumper pads on the > bottom of the 100W Amp circuit board. I removed the solder bridge and > reassembled the AMP circuit board with the heat-sink and remounted the > Amp in the SDR radio cabinet. The ATU then performed flawlessly when > tested subsequent to this troubleshooting and correction. > > I am presently on Holiday at my future retirement home in Florida until > after Christmas, after which my spouse and I return to the U.K. and > resume work. > > Advise if I can be of additional assistance in troubleshooting your ATU > unit? > > 73's, Wally - M0ZAZ. > > > > > > At 09:12 PM 12/4/2005 +0100, you wrote: > >> My ATU is not working properly: I hear the relays but when finished, >> there was >> no tuning. Is there a way to test the ATU manually or is there a >> toubleshooting >> procedure? I am using the sdr-100O with 100W and ATU installed, >> purchased in >> September 05, Delta44, v1.4.5 Beta7. Actually it never worked until >> now, was not >> sure from the readings if I still should wait for updates(?). >> Chris, HB9AJP >> >> _______________________________________________ >> FlexRadio mailing list >> FlexRadio@flex-radio.biz >> http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > > > _________________________________________ > Wallace A. Watson - [EMAIL PROTECTED] > _________________________________________ > > _______________________________________________ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz _______________________________________________ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
