Radenso Video: Why can't I test multiple radar detectors next to each other?

jeblis

Learning to Drive
General User
Joined
Oct 19, 2015
Messages
29
Reaction score
35
How would a radar detector next to Theia work out?

I’m guessing it shouldn’t false, but that the extra noise might impact sensitivity.
What would Theia do to the other detector?
 

Godowsky17

Advanced User
Joined
Apr 24, 2019
Messages
1,355
Reaction score
3,484
Location
NY
How would a radar detector next to Theia work out?

I’m guessing it shouldn’t false, but that the extra noise might impact sensitivity.
What would Theia do to the other detector?
It was stated that Theia would be able to operate normally but that the other detector might be affected.
 

goblin

Learning to Fly
Beginner User
Joined
Jun 17, 2019
Messages
651
Reaction score
832
So when I am driving on the coastline and there are boats offshore with radar will they cause falses?

Funny thing, 30 years ago radar detectors were advertised in France (where it has always been illegal to own, sell or buy one) as "...detecteur de collision marine...". Everybody knew that automobile magazines were the best place to advertise a "...Marine collision detector..." (which sounded like a detector that detects collisions :) )
 

G37X Jockey

Premium Plus
Lifetime Premium
Advanced User
Joined
Jul 22, 2012
Messages
2,083
Reaction score
2,937
Location
Behind my Steering Wheel
So then, does the WiFi or cellular signal in some newer cars potentially interfere with our RD's?
 

DChiJEllis

Moderator Emeritus and Lifetime RDF Contributor
ModSec
Premium Plus
Lifetime Premium
Corgi Lovers
Advanced User
Joined
Jul 31, 2016
Messages
2,523
Reaction score
3,875
Location
Trollstigen, Lyseveien og Atlanterhavsveien
So then, does the WiFi or cellular signal in some newer cars potentially interfere with our RD's?

I think this answers your question

 

G37X Jockey

Premium Plus
Lifetime Premium
Advanced User
Joined
Jul 22, 2012
Messages
2,083
Reaction score
2,937
Location
Behind my Steering Wheel
I think this answers your question

Yup it does. I have to listen more carefully.
 

MikePA

PSL +5
Intermediate User
Joined
Nov 5, 2016
Messages
1,160
Reaction score
1,572
I like this. Can you start every video with a 2-minute prologue:

This way, we won't forget :D
Reading some of the questions in this thread reveals otherwise, unfortunately. :)
 

DrHow

Going “Plaid” (Tesla S). RDT refugee
Premium Plus
Lifetime Premium
Corgi Lovers
Advanced User
Joined
May 18, 2018
Messages
3,896
Reaction score
6,589
After watching the video (thank you for taking the time, very helpful), I cake to a conclusion.... I wondered why (beside couple bucks lower COG) Escort does not add 5gig hertz WiFi to their connected devices and M1 cam. Couple of vehicles I have 5gig option for hotspot. less interference, more channels, faster speeds. Did not think about half harmonic from X band causes RD to deal with 5ghz WiFi. Might be hard for a RD with 5ghz WiFi inside to deal with X band noise? The video of 5ghz signal showed up pretty strong across X band screen was interesting.
 

Jon at Radenso

Manufacturer
Premium Plus
Lifetime Premium
Corgi Lovers
Advanced User
Manufacturer
Joined
Oct 9, 2012
Messages
2,784
Reaction score
22,424
Age
32
After watching the video (thank you for taking the time, very helpful), I cake to a conclusion.... I wondered why (beside couple bucks lower COG) Escort does not add 5gig hertz WiFi to their connected devices and M1 cam. Couple of vehicles I have 5gig option for hotspot. less interference, more channels, faster speeds. Did not think about half harmonic from X band causes RD to deal with 5ghz WiFi. Might be hard for a RD with 5ghz WiFi inside to deal with X band noise? The video of 5ghz signal showed up pretty strong across X band screen was interesting.

I don't think wifi is a problem for any radar detector including Escort's since they have bandpass filters in the front end that block it out. Even in a SDR based detector like the Redline 360C or Theia we would still put bandpass filters in front of the SDR to block unwanted interferers like wifi out.

With the SDR I was using it's a bit different - there are no filters in the front end since they don't know if perhaps you WANT to look at wifi.

I just used wifi as a generic signal example of a broadband, powerful interferer.
 

DrHow

Going “Plaid” (Tesla S). RDT refugee
Premium Plus
Lifetime Premium
Corgi Lovers
Advanced User
Joined
May 18, 2018
Messages
3,896
Reaction score
6,589
On anecdotal history story. HS buddy of mine who ended up in Navy flying F14s, told me of story from older pilots. Back in early 70s, The F4s for Navy and AF took Autotronics Super Snoopers, modified them to pick up certain Soviet based radars. Which had been tuned where their in plane sensors could not pick up search/track radar (somewhere in X band area if I remember). The S Snoopers were used In cockpit to get some warning when they were being painted. He told me about it because he had bought one of these back as 16yr old in 70s off my dad’s store. Anyway, years later he claimed for a short time his wing did same thing with Cincinnati Microwave product (forgot Which model). They had some electronics repair guys tuning them. Same deal, their in plane CM suite would not pick up certain adversary radar. .Mil industrial complex weenies took too long to fix the problem. Before he retired, things had changed due to results of Reagan buildup. said it is true, that a single EA-6B hacked early analog 800mhz GM OnStar, remote started some Caddies on east coast while flying along the coast. CMs had come a long way by then. These guys did all kinds of fun things back in the day.
Post automatically merged:

I don't think wifi is a problem for any radar detector including Escort's since they have bandpass filters in the front end that block it out. Even in a SDR based detector like the Redline 360C or Theia we would still put bandpass filters in front of the SDR to block unwanted interferers like wifi out.

With the SDR I was using it's a bit different - there are no filters in the front end since they don't know if perhaps you WANT to look at wifi.

I just used wifi as a generic signal example of a broadband, powerful interferer.
Yea, get that. I was suggesting that having a 5ghz radio inside the RD might be another issue to deal with. You saying that does not matter if 5ghz chipset would be inside the RD? Easily filtered out? What impressed me was the width of those signals you showed on the screen. Harmonics went right througu most of X band?
 
Last edited:

WJS

A low profile can be the best defense
Premium Plus
Lifetime Premium
Intermediate User
Joined
Sep 8, 2015
Messages
658
Reaction score
581
Location
CT
Another awesome video. @Jon at Radenso @Randy at Radenso could you guys also record the laptop screen then cut to it when talking about the different signals so we can see it better? I know it would add time to when producing the videos however, it would be helpful especially when watching on a mobile device or iPad.
 

cavecreek93

Learning to Drive
General User
Joined
Oct 6, 2014
Messages
41
Reaction score
77
Location
Scottsdale, Arizona
Have to say that I didn't fully appreciate what marketing genius your videos are. I watch a Star Trek episode and their sensors don't work because of interference and I think of your video on why you shouldn't run detectors side by side. I read an article about how some subs are nearly undetectible because they run so quiet relative to background noise and I think of your video about SNR. Everyday stuff takes me back to Theia.
 

Jon at Radenso

Manufacturer
Premium Plus
Lifetime Premium
Corgi Lovers
Advanced User
Manufacturer
Joined
Oct 9, 2012
Messages
2,784
Reaction score
22,424
Age
32
Have to say that I didn't fully appreciate what marketing genius your videos are. I watch a Star Trek episode and their sensors don't work because of interference and I think of your video on why you shouldn't run detectors side by side. I read an article about how some subs are nearly undetectible because they run so quiet relative to background noise and I think of your video about SNR. Everyday stuff takes me back to Theia.

I absolutely love star trek. TSG, Voyager, DS9, TOS, etc. I consider it a major influence on my life :)
 

TurboDriver

One foot on the brake, one on the gas...
Premium Plus
Lifetime Premium
Advanced User
Joined
Sep 14, 2012
Messages
2,312
Reaction score
3,184
Location
Michigan
I absolutely love star trek. TSG, Voyager, DS9, TOS, etc. I consider it a major influence on my life :)
I just watched Star Trek Discovery and Picard on CBS All Access...Picard was awesome, Discovery season 1 was good, season 2 a little off but ok.

I also liked the Expanse...
 
Last edited:

DrHow

Going “Plaid” (Tesla S). RDT refugee
Premium Plus
Lifetime Premium
Corgi Lovers
Advanced User
Joined
May 18, 2018
Messages
3,896
Reaction score
6,589
Have to say that I didn't fully appreciate what marketing genius your videos are. I watch a Star Trek episode and their sensors don't work because of interference and I think of your video on why you shouldn't run detectors side by side. I read an article about how some subs are nearly undetectible because they run so quiet relative to background noise and I think of your video about SNR. Everyday stuff takes me back to Theia.
Your sub analogy.... there was a time where Ruskies, obtained stolen French, or Brit, or German records of them testing their underwater platforms with Americans. Which, if gets out, is bad news. Anyway, this was with the boomers (ICBM) US Ohio class boat. Here is what happened close quarters... which because no one gets close, this is extrapolated for finding Ohio class boats (at the time the most quiet) at greater distance. How did they track the “untraceable” boomer? Zooming in on area where the ambient noise was lower than the rest of the sea in the general direction. Bingo, the uber silence exposed the boomer.

Ruskies started using this stolen IP in attempt to track US boats. With some newfound success. First time ever tracking correct running US boomer. There are limits to this. During design of Jimmy Carter/Seawolf series, was a worse problem (large and super absorbing quiet). So, imagine what USA had to do? Synthesize noise to get their boats back to just under or at ambient noise level. How does this happen? Combination of large size, original harmonics of rubber tiles, plus other items that literally absorbed noise. The term “hole in the water” went too far.

USA has turned this against the “allies” non nuke quiet subs. They too, can be a hole in the water enough to kinda look graphically like a black hole sucking up stars into it. They can be spotted now. US Fleets got tired of these advanced non nuke subs getting inside the carrier groups (show off), or sitting well within range of doing major damage during games. In this case, Uber stealth can be used against itself. Rumors also have it various bi-static radars running frequencies still within stealth aircraft “cloaking“, can also stand up various different RF noise areas, then measure difference (Lower noise absorbed or deflected, not higher signal) when aircraft runs through it.

ok, back to the topic... RF DSP (also used in radar detectors) was originally designed to find signals below the background noise threshold. Still is amazing and improved
 

Mithheru

PSL +5
Intermediate User
Joined
Aug 8, 2018
Messages
684
Reaction score
1,537
I can say for sure you can run an R3 and DFR7 right next to each other without any issues. However, that would be with R3 on GPS and Ka only (K turned off) and DFR7 running K1 segment only and mounted sideways (Ka off etc.). This was optimal combination for police Ka and mobile redflex van in NZ before the R7 came out.


Here is an older video of mine showing redflex detection on DFR7 simultaneous and overlapping with Ka detection on the R3.
 
Last edited:

Discord Server

Latest threads

Forum statistics

Threads
90,844
Messages
1,382,485
Members
22,854
Latest member
Easygoinal
Top