Search found 11 matches
- Wed Feb 14, 2024 9:45 am
- Forum: Thetis
- Topic: Thetis and openhpsdr mrx ps and Thetis
- Replies: 2
- Views: 339
Thetis and openhpsdr mrx ps and Thetis
Hi all , question : is it OK to get Thetis and HPSDR both installed on a PC and sometimes run Thetis , sometimes run hpsdr? Actually I run only HPSDR but there is someting boring : depending how I use it , I need the setup to be different so I need to modify manually every time. So different softwar...
- Thu Sep 27, 2018 5:26 pm
- Forum: Amplifiers & Tuners
- Topic: ANAN-10 PA IMD performance
- Replies: 10
- Views: 13808
Re: ANAN-10 PA IMD performance
Hi all agn , could sort my tx problem : it was a small connector routing the tx signal from the Hermes to the amplifier which was disconnected. Now more serious. My ANAN is worse that PA5Y , IMD is -21 relative to one tone on the 3rd order and -33 on the 5th order (at 9W pep). I find it is another b...
- Mon Sep 24, 2018 2:34 pm
- Forum: Amplifiers & Tuners
- Topic: ANAN-10 PA IMD performance
- Replies: 10
- Views: 13808
Re: ANAN-10 PA IMD performance
Hi guys , not sorted of the pa problem. After firmware and software upgrade , I get the rigth power out of the Hermes , but no power at all out of the 10w amp. I can hear a relay click when I press TUNE but no power out. I reviewed all the software configuration and all looks ok. I will carry on wor...
- Sun Sep 23, 2018 4:55 pm
- Forum: Amplifiers & Tuners
- Topic: ANAN-10 PA IMD performance
- Replies: 10
- Views: 13808
Re: ANAN-10 PA IMD performance
Hi all agn , I've measured today the IMD on 28Mhz on the low power output with PA disabled. I get the same numbers than PA5Y. I could not do the measurement with the power amplifier as I have a problem there : no more output since I have upgraded to a new firmware and a new HPSDR yesterday. Will do ...
- Sun Sep 23, 2018 10:15 am
- Forum: Amplifiers & Tuners
- Topic: ANAN-10 PA IMD performance
- Replies: 10
- Views: 13808
Re: ANAN-10 PA IMD performance
Hi all , I don't know about Conrad , but in my case: I am a V/U/Shfer. The anan is used as a IF , with some power out because all my transverters are far away from the shack. There are several bands using antenna 1 and this antenna 1 port is switched on 13/6/3cm transverters. Antenna 2 goes on the 2...
- Sat Sep 22, 2018 5:34 pm
- Forum: Amplifiers & Tuners
- Topic: ANAN-10 PA IMD performance
- Replies: 10
- Views: 13808
Re: ANAN-10 PA IMD performance
Hi all ,
sorry to say , but it is not because pure signal improves IMD that the PA can be that bad without pure signal. Maybe quiescent current is wrong?
73
Dom
sorry to say , but it is not because pure signal improves IMD that the PA can be that bad without pure signal. Maybe quiescent current is wrong?
73
Dom
- Thu Sep 20, 2018 7:50 am
- Forum: Hermes Firmware (10 & 100)
- Topic: ANAN-10 TX spurs
- Replies: 17
- Views: 25834
Re: ANAN-10 TX spurs
Hi , me agn , I had a look at the 9744 datasheet. The sfdr explains the spurs we see. Probably my anan is a 10E , I don't know if it is the same ADC in this version , maybe the sfdr is 10dB worse? Anyway , if it is the case , there is no simple way to improve this. I also had a look at the filter , ...
- Thu Sep 20, 2018 5:48 am
- Forum: Hermes Firmware (10 & 100)
- Topic: ANAN-10 TX spurs
- Replies: 17
- Views: 25834
Re: ANAN-10 TX spurs
Hi again , I got some time yesterday to run more measurements. You are rigth , spur content depends on sampling. With 384K spurs are -72 (10dB better) , still not enougth and worse than Conrad anan10. A strong signal on the band is something like -30dBm in the offended receiver , then we get 4 inban...
- Wed Sep 12, 2018 8:20 pm
- Forum: Hermes Firmware (10 & 100)
- Topic: ANAN-10 TX spurs
- Replies: 17
- Views: 25834
Re: ANAN-10 TX spurs
Hello Walter , in fact I don't care abt 2Mhz spurs ( which are probably coming from the 5V switching power supply).I saw them but was not choked. My problem is in band spurs. Your spectrogram has been made on 2m , so imagine someone using such a poor tx during a major european contest with 60dBm or ...
- Sun Sep 09, 2018 6:24 pm
- Forum: Hermes Firmware (10 & 100)
- Topic: ANAN-10 TX spurs
- Replies: 17
- Views: 25834
Re: ANAN-10 TX spurs
ooooops anan10 not anan 100 like mistyped
- Sun Sep 09, 2018 6:23 pm
- Forum: Hermes Firmware (10 & 100)
- Topic: ANAN-10 TX spurs
- Replies: 17
- Views: 25834
Re: ANAN-10 TX spurs
Hi all , I saw this topic development on the forum. Should I conclude that all ANAN100are not the same? Mine is bad , generating 4 (at least) in band spurriis in the 28Mhz band and in all bands in fact. It is not a spectrum analyser problem as , to be sure , I used an RX to confirm . These products ...