Alarm SWR - No RX on OpenHpsdr 3.4.6 and / Firm 4.9 / ANAN 100D

Thierry
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Alarm SWR - No RX on OpenHpsdr 3.4.6 and / Firm 4.9 / ANAN 100D

Postby Thierry » Sun Dec 10, 2017 9:14 pm

Hello,

I use the version of OpenHpsdr 3.4.6 and the firmare 4.9

And at times I happen to have a SWR alarm and when I release the microphone I have no reception ... I have to press the microphone again for the reception to return.

Is there a setting on the side of the options : tx delay, delay mox, rf delay, delay pt and T / R delay ...

Or is it possible that there is a bug ?

Thanks in advance,

Thierry F4FPQ
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w-u-2-o
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Re: Alarm SWR - No RX on OpenHpsdr 3.4.6 and / Firm 4.9 / ANAN 100D

Postby w-u-2-o » Sun Dec 10, 2017 10:32 pm

It could be a bug. Or it could be a stuck relay.

Or it could be that, the relays being controlled by a pseudo-SPI bus, if there was EMI in the radio due to excessive reverse power, it's conceivable that the SPI bus could be interfered with in a way that prevented proper relay switching.

73,

Scott
Thierry
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Joined: Sun Dec 10, 2017 7:52 pm

Re: Alarm SWR - No RX on OpenHpsdr 3.4.6 and / Firm 4.9 / ANAN 100D

Postby Thierry » Mon Dec 11, 2017 6:04 am

Hello Scott,

And thank you for answering me, this problem is random the ros of my antenna is 1.2 / 1 .... and by the time the problem comes back ... just change the delay that is originally tx delay 2, delay mox 2, rf delay 2, delay ptt 2 and T / R delay 2, has tx delay 4, delay mox 4, rf delay 4, delay ptt 4 and T / R delay 4 and the problem disappears .. this problem makes me think has a faulty relay T / R but it disappears when I change the timing option.

It's curious.

Thank you,


Thierry
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w-u-2-o
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Re: Alarm SWR - No RX on OpenHpsdr 3.4.6 and / Firm 4.9 / ANAN 100D

Postby w-u-2-o » Mon Dec 11, 2017 2:21 pm

With the timing change working, that seems to imply it could be RFI. If a high VSWR condition is normal for your antenna during tuning, you might try a few snap-on ferrites on the RF cable right where it comes into the radio.
Thierry
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Re: Alarm SWR - No RX on OpenHpsdr 3.4.6 and / Firm 4.9 / ANAN 100D

Postby Thierry » Mon Dec 11, 2017 3:10 pm

Ok Scott,

I use a tri band yagi 10-15-20 meters I have no ros 1/1 ... 1/2 max, so no alarm normally ROS.

I have the impression that it is a relay that has trouble making contact ... once I have more reception another time I have a ROS alarm ...

It's very random and just change the time to find a normal function ....

I did not dismount the ANAN-100D do you know if there is a ferrite on the cable SPI ...?

Can you give me the ideal time in the option part ?

Thanks again

Thierry
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w-u-2-o
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Re: Alarm SWR - No RX on OpenHpsdr 3.4.6 and / Firm 4.9 / ANAN 100D

Postby w-u-2-o » Mon Dec 11, 2017 5:58 pm

Thierry,

I'm suggesting you put ferrites on the coaxial cable to minimize any currents on the shield and prevent their intrusion into the radio.

Their is no optimum timing, any timing should work fine in the absence of RFI.

73,

Scott
Thierry
Posts: 13
Joined: Sun Dec 10, 2017 7:52 pm

Re: Alarm SWR - No RX on OpenHpsdr 3.4.6 and / Firm 4.9 / ANAN 100D

Postby Thierry » Mon Dec 11, 2017 10:23 pm

Good evening Scott,

And thank you for your advice it would seem that you are right ... I am in a building on the top floor and the yagi antenna and just above my head (6 meters) ...
The problem this evening after many test has disappeared ..

Thing curious for 3 days it rains enorment and the roof and the antenna is very wet .. the rain is stopped since 19:30 and everything works without incident ..

I will extend the tests because I moved the power cables transceiver and the cable antenna during all these tests ..

It seems that is a good return hf.

I simulate the problem by pressing the ANTENNA CONTROL in Ant / filter and I have in tx and rx mode the same problem.

thanks again

I test the firmware 6.0 and no pur signal..73.

Thierry
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w-u-2-o
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Re: Alarm SWR - No RX on OpenHpsdr 3.4.6 and / Firm 4.9 / ANAN 100D

Postby w-u-2-o » Tue Dec 12, 2017 1:22 am

Regarding the FW 6.0 problem, see this thread.

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