Sena 20S Evo

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raesewell
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Sena 20S Evo

Postby raesewell » Sat Sep 23, 2017 8:20 pm

We have had a set of Scala G4s for about five years now and they are getting a bit temperamental mine intermittently works on one speaker and Melanies battery doesn't always know when it's fully charged.
So I have ordered a pair of Sens 20S Evo from Sportsbikeshop. They run a price match policy and I found a company selling them for £346, Sportsbikeshop price £399.
I sent them the details for a price match and they came back to me telling me that the company was based in the Netherlands despite having a contact address in Poole Dorset and they only match UK sites. However they did give me a discount code reducing the price to £360. As I prefer to deal with UK based companies where possible, I used the code and am awaiting the arrival of the new units.
I will report back when I have had time to assess their performance.

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Galactic Greyhound
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Re: Sena 20S Evo

Postby Galactic Greyhound » Sat Sep 23, 2017 9:22 pm

The intermittent working on one speaker is likely due to a fractured wire in the lead where bending occurs.
The Battery problem might be cleared by replacing the battery especially if it is an Li-On type.
Ced.

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Re: Sena 20S Evo

Postby raesewell » Sun Sep 24, 2017 11:01 am

I traced the intermittent speaker to the contacts between the headset and the mount, I have cleaned them a couple of times which works for a while but then a couple of weeks later goes again. Whilst I could probably eek a bit more life out of both units, it's time for new ones. They are looking a bit battered and worn. Remember Ced we do a hell of a lot of travelling so after five years I think they've done OK.
I was ummin' and arrin' about spending that amount of money and Melanie said "stop messin' about and get them bought". I needed no more encouragement :lol:

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Re: Sena 20S Evo

Postby Galactic Greyhound » Sun Sep 24, 2017 4:11 pm

Well, a man's gotta do what a man's wife says he gotta do! :smile:
Ced.

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Sent by Boson Quantum Transmission from the Starship 'Galahad'.
http://www.researchgate.net/publication ... ing_bosons" - It works!

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Re: Sena 20S Evo

Postby raesewell » Sun Sep 24, 2017 6:09 pm

Well, a man's gotta do what a man's wife says he gotta do! :smile:
My sentiments exactly Ced, anything I can do to make Melanie happy :razz:

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Re: Sena 20S Evo

Postby raesewell » Mon Sep 25, 2017 7:28 pm

The Sena 20S Evo units turned up today, very good service from Sportsbikeshop.
This is what they looked like in the box.
Image

They came with lots of, foams, Velcro pads and leads. There are lots of fitting and adjustment options.
Image

So far I have only tried them in the house. The sound quality is better that the Scala G4s and the volume is louder by a fair bit.
As with all new gadgets it will take a while to get used to all of the functions, but I have the phone, sat nav and intercom working, which is all I need for now.
I will report further when I have something to report.
I would like to try the range and will have to figure out how to do that, it might mean getting Melanie to wear her helmet in the car. :razz: :shock:

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Re: Sena 20S Evo

Postby Galactic Greyhound » Mon Sep 25, 2017 8:05 pm

Looks like Melanie made a good choice then! :smile:
Ced.

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Sent by Boson Quantum Transmission from the Starship 'Galahad'.
http://www.researchgate.net/publication ... ing_bosons" - It works!

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Re: Sena 20S Evo

Postby raesewell » Mon Sep 25, 2017 9:13 pm

We'll see if she thinks so when I get her wearing her crash helmet in the car :shock: although there is another alternative, the Sena 20S Evo has an earphone socket so she may be able to use earphones instead.

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Re: Sena 20S Evo

Postby raesewell » Wed Sep 27, 2017 5:00 pm

I had a chance to do a partial test today. I met up with my mate John for a coffee and for the first time ever with a headset I had to turn the volume down a bit, the sound is crisp and clear. I tried the FM radio and the sound was good and had plenty of volume. I had to read the manual when I got home to find out how to change stations, I think I've got it now :-\
So far I like it, I'm still on a learning curve though.

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Re: Sena 20S Evo

Postby Galactic Greyhound » Wed Sep 27, 2017 5:16 pm

Sounds promising! :smile:

It will be interesting to know the range.
Ced.

R1100RT 1996.
Sent by Boson Quantum Transmission from the Starship 'Galahad'.
http://www.researchgate.net/publication ... ing_bosons" - It works!

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Re: Sena 20S Evo

Postby raesewell » Wed Sep 27, 2017 7:15 pm

Testing the range definitively may prove more difficult. We do have a fairly straight stretch of road nearby that should test them up to just over half a mile, but to test the claimed 1.2 miles I'll need to be more creative :shock:

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Re: Sena 20S Evo

Postby Galactic Greyhound » Wed Sep 27, 2017 8:34 pm

I think that these Intercom/bike-bike devices are using Bluetooth 4.0 operating at 2.4 GHz.

A realistic range between a given two riders might therefore be around 100 metres with perhaps up to 400 metres on direct line-of-sight in perfect conditions.

The 1.2 miles (1,931 metres) is therefore likely quoted by 'daisy-chaining' a group of 8 riders whereby Rider 8 is within (say) 100 metres of Rider 7 who must be within 100 metres of Rider 6 and so on until Rider 1.

The Bluetooth 4.0 system transmits the transmission from (say) Rider 8 to Rider 7.
Rider 7 Bluetooth 4.0 on receiving the transmission automatically transmits the received transmission to Rider 6 where the process continues until Rider 1 receives the 'daisy-chained' transmission from Rider 8.

I believe that many Bluetooth comms manufacturers quote their 'range' in this manner which is a bit misleading to say the least!

If you want a 'true' Rider 1 to Rider 2 range of 1.2 miles (1,931 metres) then you need more transmitting power than a Bluetooth device can provide such as a Push-to-Talk (PTT) 2-way radio system operating at a lower frequency and higher power e.g Citizens Band 27 MHz or the later General Public Radio System on around 400 MHz.

(Or, a Boson Quantum Transceiver as used on Galactic Class Starships such as the 'Galahad' for instant interstellar communications) :lol:
Ced.

R1100RT 1996.
Sent by Boson Quantum Transmission from the Starship 'Galahad'.
http://www.researchgate.net/publication ... ing_bosons" - It works!

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Re: Sena 20S Evo

Postby raesewell » Wed Sep 27, 2017 9:20 pm

They are operating on Bluetooth 4.1 Ced, don't know if that makes much difference.

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Re: Sena 20S Evo

Postby Galactic Greyhound » Wed Sep 27, 2017 10:38 pm

I don't think it will make much difference Rae.

The problem is that Bluetooth is limited by Regulations in its transmitted power output and the high UHF frequency of 2.4 GHz is not conducive to reliable distance communications in urban and hilly terrain with winding roads.

If you check the User Manual, I think there will be something in it about 'Group Communications' and how the device/s is/are to be set up for this.

This is an important section if you intend to keep in touch with a number of riders when riding together.

I think that this is to enable the 'daisy-chaining' function so that the Group is 'registered' and all linked together on the same Channel.

With a bit of luck, this should prevent your Group from hearing transmissions from another different Group.

I am interested to hear how you get on with this and how the 'range' works out in practice when within a Group.
Ced.

R1100RT 1996.
Sent by Boson Quantum Transmission from the Starship 'Galahad'.
http://www.researchgate.net/publication ... ing_bosons" - It works!

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Re: Sena 20S Evo

Postby raesewell » Thu Sep 28, 2017 10:12 am

When I test it Ced I'll let you know. I will only be testing two units though, to see what the range between the two is.

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Re: Sena 20S Evo

Postby Galactic Greyhound » Thu Sep 28, 2017 4:59 pm

Thanks Rae.

Some of the guys here do rider training and might be using a Bluetooth headset for the purpose - if anyone is doing this could you comment on range please?
Ced.

R1100RT 1996.
Sent by Boson Quantum Transmission from the Starship 'Galahad'.
http://www.researchgate.net/publication ... ing_bosons" - It works!

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Re: Sena 20S Evo

Postby gogs01 » Thu Sep 28, 2017 7:02 pm

The Bluetooth headset I use is the BMW Communicator, which works fairly well with Satnav, phone and to a pillion passenger, but range when paired bike to bike is pretty dismal. 30meters is quoted in the manual, and anything beyond that, even line of sight, is poor quality at best.
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Re: Sena 20S Evo

Postby Galactic Greyhound » Thu Sep 28, 2017 7:13 pm

Thanks Gordon.
Does this have any 'Group' function to allow communication with more than one other rider?
Ced.

R1100RT 1996.
Sent by Boson Quantum Transmission from the Starship 'Galahad'.
http://www.researchgate.net/publication ... ing_bosons" - It works!

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Re: Sena 20S Evo

Postby kent_instructor10 » Fri Sep 29, 2017 9:40 am

Thanks Rae.

Some of the guys here do rider training and might be using a Bluetooth headset for the purpose - if anyone is doing this could you comment on range please?
Im still using pmr446 radios with hard wired leads. I still think its most hard wearing for me and i understand it! But apparently examiners are looking to go to bluetooth now as apparently the technology is significantly better than it was in the past. Will be interesting to see how that develops.

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Re: Sena 20S Evo

Postby grayurc » Fri Sep 29, 2017 7:54 pm

If you blue tooth intercom can exceed 100 metres then don't use it as you will be subjecting your skull to inappropriate levels of radiation. Otherwise keep talking.

Philip

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Re: Sena 20S Evo

Postby gogs01 » Fri Sep 29, 2017 9:01 pm

Thanks Gordon.
Does this have any 'Group' function to allow communication with more than one other rider?
No, the functionality of these things seems to be quite limited compared to the latest from Sena etc..
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Re: Sena 20S Evo

Postby george baker » Sat Sep 30, 2017 11:10 am

Hi
in Wales in the spring a group of guys, Aladin, Tango, Farmerboy etc had a range of these bluetooth headsets from a "cheap chinese" one, through Aldi to an expensive one. IIRC Some brands seemed to be able to connect to all the others while the expensive one was confined to talking to itself.

Best to get them to report back since I was not paying enough attention

George
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Re: Sena 20S Evo

Postby raesewell » Sat Sep 30, 2017 2:55 pm

The 20S Evo has a universal function so can connect with non Sena units.

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Re: Sena 20S Evo

Postby george baker » Sun Oct 01, 2017 10:18 pm

hi
good news rae

either john could not find that function or it was not on his, odd cos it was the most expensive there

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Re: Sena 20S Evo

Postby raesewell » Mon Oct 02, 2017 1:00 pm

I found this video from Bryan Glynn a fellow FJR owner from the States and it seems he beat me to it for testing, interesting take a look.
https://www.youtube.com/watch?v=HgDGTnyHYvI
This testing is on a pair of 20S and the 20S Evo may be a bit better as they have reconfigured the aerial but 1200 yards is not bad.


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