开云体育

Amazing thank you!!

I've also tried to join a few times and have been rejected every time.? Gave up and moved on.?

Fortunately this group has been wonderful!? :-)

Hi Oleg,

whenwillyiu post the STL files for this Vee Dipole mount?

thanks,

frank
k4fmh

On Fri, Dec 22, 2023 at 08:38 PM, AA7CL wrote:

Curious what others are seeing...

Yes, this is an old and known problem.

My friend purchased a X6100 and was over the other day demonstrating the radio. He mentioned some issues with poor transmit audio reports using the plug-in mic. I set up a local SDR receiver to listen to his audio and noticed a strong on-frequency signal on the spectrum window of the SDR receiver This occurs on all bands and all modes. The X6100 wasn't directly coupled to the receiver of course. The SDR receiver was connected to an antenna switch which has an isolation of about 50 dB. The X6100 was also connected to the same switch and switched to an outside antenna. The noted signal was significant.? I decided to measure the signal from the X6100? directly connected, using my spectrum analyzer. I found the signal which I suspect is Local oscillator leakage (LOL), to be -47dBm. If the attenuator is enabled, the signal drops to -67 dBm and even more if the preamp is enabled. I'm curious if anyone else has measured LOL on their X6100??

As you can imagine, a -43 dBm signal is an extremely high level signal. In close proximity to another receiver that could equate to S9+30dB level!?

If you don't have a spectrum analyzer, you can get a relative measurement by connecting the X6100 to one port of an antenna switch, another test receiver to the other port of the switch and a 50 ohm load to the common port of the antenna switch. Make sure the switch is selecting the X6100 to the 50 ohm load and make sure you don't transmit on the X6100. Then set both the test receiver and the X6100 on the same frequency. Make sure the Attenuator and preamp are disabled on the X6100 and both radios on the same mode. You can then tune the test receiver 1 KHz lower in frequency for USB or 1 KHz higher in frequency for LSB. Make sure the attenuator on the test receiver's is disabled also. Look at the S-meter on the test receiver. What do you see? Ideally, you should have both the X6100 and test receiver terminated in a 50 ohm load but this will provide some relative level.?

It is not uncommon to see LO Leakage on direct conversion receivers however, I think this the highest I've ever found. Curious what others are seeing...

Jim

I appreciate all the replies on this.? I have now received 3 rejection notices and have also given up.

Thank you for providing this. It should be a help for others and me. Merry Christmas and Happy New Year to your family and you.

Enjoy Life, Greg
Live Well, Laugh Often, Love Much

Thank you...very helpful

John N6TRC

It would work best near the transceiver in my opinion.

Sorry, I do not.

On Thu, Dec 21, 2023 at 09:05 PM, Mike NN3I wrote:

After much experimenting, I found the DIY antenna system in the attached photo provides excellent results.? --
Mike NN3I

Mike, are you using any kind of matching coil or transformer, or is it merely the 17' vertical and the radials (plus the 1:1)??
?
--
73 de K9NUD

On Fri, Dec 22, 2023 at 07:19 AM, Gale Smith wrote:
As mentioned earlier, using a choke helps, and if you have enough coax in the line, 6 or 7 turns in a 7" diameter held together with cable ties will help.
This RF choke that you are referring needs to be made where the antenna plug is situated at my balcony or near the transceiver's plug ? I run my antenna with a 10m rg213 and I Believe I can make 6-7 turns as a choke ... In advance I would like to THANK you all guys for trying to help me with the situation I am dealing with ...this community is very helpful and really trying to solve other people's problems..thx guys

What type of antenna are you using? I have found that common mode current can make the radio do strange things that disconnecting and shutting down the radio corrected. Make sure you add a choke close to the radio to remove common mode current.

I tried to join a few times, but was rejected. The email is correct with qrz, so I just gave up.

I have a copy of the manual, and if anyone wants to add it to the files, I have attached it to this message.
73, KD9OCL

I have found that the X6100 is very sensitive to common mode current. Adding the amp will make it worse. As mentioned earlier, using a choke helps, and if you have enough coax in the line, 6 or 7 turns in a 7" diameter held together with cable ties will help. I have an EFHW and a DX Commander classic 1/4 wave 8 band vertical. No issues using the DXC, but the EFHW has common mode current heading back into the amp without chokes. My amp would lose control of the 6100 and flash that message, the swr between radio and amp would rise, and the 6100 would transmit 0w. Chokes help, but do not eliminate it entirely. Make sure the tuner in the 6100 is off. I will turn the amp tx power off, and transmit on nfm through the amp and check swr, and push the tune button on the amp if needed. Go back to the proper mode on the radio, enable power on the amp and good to go. It's extra steps, but it tends to keep everything happier. You have to remember that the X6100 is a computer made into a radio. It's front end is not as robust as a G90. It is not nearly as forgiving as a dedicated radio.