Thanks for the video. How did you setup your desktop in sections like that?

Without a useful signal it is a meaningless test

I am currently using one of these antennas and I am making contacts all over the U.S. and various parts of the world. I have made contacts with Scotland, England, European countries, and South America, Australia, and Asia. I am only running 100 watts but I do live in a fairly high elevation. Maybe I am just lucky and maybe I should try a different antenna just to see what the difference might be. I have no connection to the manufacturer of this antenna.

this is not the correct way, so you are just attenuating all the signals without making any improvement to the SNR. The secondary antenna must be able to receive the interference (it works only on punctiform signals) and only in this way the second ADC is able to dephase and cancel.

So from your video, it sounds like you are not a fan of the Comet 250B antenna. At 4:22 into the video you hear the DX Expedition conversation. If I understand correctly the antenna on the bottom is the 250B antenna showing very little signal strength as compared to the top window\antenna. Is that correct ? I have a 250B antenna and I am not happy with it either.

Brilliant

WOW! What an excellent (and interesting) video! Really enjoyed that. Thanks Nige.

My room atomiser blocks my d a b signal ??? any idea how this is possible

How did they achieve the same tap in such a wide band in a directional coupler? Is there a strip line? And how is the compensation for the non-linearity of the frequency response done?

Did you find the source of this? I have the same i suspect it's solar panels it goes away then returns. Same sound in AM

I have been getting the same problem, its just started only a year ago, only last for a few hours then goes off. But i think its only seen when i use my longwire, the a99 does not seem to be effected.

Thank you for taking the time for making this. It has helped me with all of my Flex radios!

All I can say is: It’s better than a wet noodle. Lol! De: NC4TN

Thank you very much, Nige, very impressive.

Where is Nigel now?

72,11 is BR Radius FM from Minsk

I am looking for a vertical antenna that is wide band and doesn't require tuning. This will go way up a tree. I was looking at the comet 250 until I found your review. Is there another vertical wide band antenna I should look at as well. I need wide band, and no need for tuner etc. Thanks Bob Olympia WA, USA

All I can see is a mouse pointer going about and sound levels going up and down and speaking which can't be heard because the radio is on.

nice but a demo with receiving a station ???

Brilliant illustration. Thanks. Can't wait to try this tomorrow. You have another subscriber thanks. M0XMX 73

Hi, I have a question - my old Selena B-216 radio works in the OIRT range (65.8-74.0 MHz), like you show. I still catch some of the stations within (87.5-108 MHz), that are being "mirrored", but the volume is very low. I wonder - is the volume low because the stations are being "mirrored" or because there is a defect in my radio? When you listen to mirrored stations are just as loud as in the FM range or are they quiet?

EXCELLENT video but would have been better in my opinion if you would have used a "regular" mic, not everyone uses high end mics. 73 and tnx again 4 the upload !

It would be very helpful if you told which one is which. I cannot read the blurry title. You even said "we have a winner" but didn't say which one. Amazing

Can I get upto 7 GHz or more?

I'm now back wanting to use my Flex 5000 for FT8. Your Virtual Audio Cable setup is easy to follow. But I don't understand how the ComOCom comes into play. I did not see how the serial ports are assigned in WSJTX program. Please explain how you did that?

Nigel, By the looks of the overall noise floor it looks like you are dropping the overall gain as well? Perhaps a signal generator on the input would be more useful so we can see the overall gain remains the same?

VAC driver is unstable! For me, tool called audio repeater pro worked.

that flex is total rubbish

I spent the past three hours trying to use vac with hdsdr and wsjt-x. I followed another KZbin guy and when I was done the two softwares above no longer function nor did vac. I guess I'll try this guy next in about a month when I recover.

Nigel, what is the second noise source? I don't understand what youre calling it lol. I have that same noise. The power company has been out and cant find it, I shut off and disconnected everything in my house as well. But I have that SAME EXACT noise on the AM broadcast BAnd

So you are saying we need a duplicate or better antenna to have effective phase noise cancellation. Hmmm, I don't think I can fit another 70' tower with a 4 element yagi my lot.

ANAN 8000 😍😍😍

THANK YOU. This was covered very well by SM5BSZ years ago (Google for "The abominable ALC") but the visual presentation here is nicely done. -NU0C

Maybe the wanted signals will also be cancelled

How much would it cost?

Hi, I am back qrv after 25 years away from radio. How do these recievers compare against, for example a Yaesu or Icom Radio. What are the main advantages/disdvantages of such systems please? David

sort your fucking sound out !

Fascinating at 14:00 the audio of the station transmitting is definitely stronger and more legible on the flex compared to the anan. It was almost completely wiped out on the anan though the anan handled the strong signal better earlier in the vid. It's something I always look for and has been a source of frustration (icom 7300)on crowded bands during the big contests. Great vid and many thanks for posting! Maybe do one where you wind each receiver in tight to show how each one handles "bombastic" qrm. 73!

Fantastic ANAN !!!!!

220 MHz in the US use to be allocated to Ham Radio. In 2020 US is going to try DAB & possibly eliminate our HD Radio as the costs very high to run them & not many radios made with HD & only a few auto manufactures have them.

tnx fr the video. would have been much better to hear you rather than the hissing of the radio ! 73 N8AUM

You refer to WSJT when the headline says JT6m, are they the same,? confused.com

One of the best and ONLY Flex radio SDR presentation made in a professional way!

Excellent presentation!

Tnx for the very informative and useful video. I am going to get the digital modes running on my new SDR radio and with Your video it's simple. 73 > LA9BM

Thank You, wd5iah / hj3hdd

can i use this to decode p25 with my rtl sdr

I am so impressed. The Anan 100 is incredible. I have a 100D coming in next few days that I purchased used. I am primarily a 6m operator. De NZ5F

G7CNF, thanks for the post! I have a request... can you post a video showing the same thing but as you are tuned to a station. Would love to see what effects it has on an incoming signal from a fellow ham.

Good Job! Thank you.