Jasjar External Antenna connector GSM/GPRS

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Fe3o4

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#7105 20-Mar-2006 10:47

Whilst my office is supposedly within Vodafone's "Green" area reception is marginal. I have been told that the only answer is to fit an external antenna to the cell phone (Jasjar) I cannot seem to find any specs on the "plug" or any off-the-shelf kit. Can anyone help?

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BDFL - Memuneh
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#31080 20-Mar-2006 10:51

I never heard of such an accessory for the i-mate Jasjar...

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Fe3o4

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#31081 20-Mar-2006 10:58

As the Jasjar has the two connection ports one would assume that they have a purpose, I just need to know the name,type or classification of a suitable male connector.
Cheers

tonyhughes

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#31098 20-Mar-2006 12:37

Try Cellutronics (sorry no contact details on hand), they seem to make aerials for everything but your kitchen sink.

antoniosk

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#31124 20-Mar-2006 18:09

Fe3o4: As the Jasjar has the two connection ports one would assume that they have a purpose, I just need to know the name,type or classification of a suitable male connector.
Cheers

One of the connectors is for the GSM aerial, the other is for the 3G aerial. There is antenna diversity in there as well.

Be very careful whatever you buy - if the connector is even slightly incorrect you will ruin your device.

Cynic

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#31172 21-Mar-2006 16:24

I've had a look at this site for 3G/GSM aerials: www.panorama.co.uk Mobile phone antennas – temporary fixing (near bottom of page). Not sure if the aerial cable connector is correct for a JasJar – can probably get an adapter or change plug.

I have the same issue, though I'm looking to improve outdoor reception in marginal 3G coverage areas.

Julian

Fe3o4

12 posts

Geek

#31186 21-Mar-2006 18:06

Cynic et al,
My have found the answer - connector looks like a MMCX type plug. I intend dropping in on Associated Communication Technologies AK http://www.actechnologies.co.nz/default.asp?pgmain=main who indicate that they are endorsed by Vodafone NZ for RFS coaxial systems on VFNZ's network.
Of course non of this would be nessecery if Vodafone actually had acceptable coverage - a mere 35kms from their office!

Cheers

AliExpress

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Digs

120 posts

Master Geek

#32099 3-Apr-2006 15:39

In UK there Jas Jar is called a O2 Exec...

Here is a forum discussing Antenna issue
http://www.mobileplanet.com/forumthread.asp?code=125788&thread=1&man=O2

This spec sheet for Jas Jar praises the External ports
http://www.4winmobile.com/viewtopic.php?t=2

Digs

120 posts

Master Geek

#32119 3-Apr-2006 18:23

Just got off the phone with world wide club imate.

1) There are no IMATE branded external antennas for Jas Jar or other Imate products. 0800-447-805

2) However Jas Jar is compatible with other GSM external antennas. They said customers have reported this and that they have the antennas working. Note in the conversation he could not confirm customers either has WCDMA or GSM.

3) He suggested this website as a source for compatible antennas : http://www.expansys.com.au/

So there is hope... I have emailed this site for a response.

The description of Antenna specs from page 13 of the manual is and also this website is >>>

Specs are from http://www.4winmobile.com/viewtopic.php?t=2 WCDMA Car Antenna Connector (blanked) - Connect your WCDMA phone to an external or car antenna
GSM Car Antenna Connector (blanked) - Connect your GSM phone to an external or car antenna

SO WATCH THIS SPACE...

Digs

120 posts

Master Geek

#32133 3-Apr-2006 19:27

More info
http://www.mobileplanet.com/forumthread.asp?code=125788&thread=1&man=O2

In the forum above comments were made that the connector was significantly different from most. From page 13 of manual item 19. ( After removing the plugs )..

So if any one has the detailed specifications of the plug No 19 I am sure this ebay shop may have a product for us...

http://stores.ebay.ca/BLACKCAT-CELL-PHONE-ANTENNA-STORE

So how to find the manufacturing specs. All antennas seam to be sold with adapters.

More to come...the end is nigh !

After half a hour on Googe I have found the connector..the trick is to find the adapter for the antennas, which seams to have the world wide Jas Jar users stumped.

The JAS JAR connector on the phone is a Amphenol MHC-H196. http://wiki.xda-developers.com/uploads/MHCH196.pdf

From this site : http://forum.xda-developers.com/viewtopic.php?p=255644

Fe3o4

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#32137 3-Apr-2006 19:44

Digs, good to see you are living up to your name! I have probably spent too much time surfing around for the solution, but in doing so, a couple of issues have become obvious. - 35% of cell phone users have less than acceptable reception (some blurb from a cellphone signal booster site) So I then go hunting for a signal booster – great idea, antenna on the roof wired down to snazzy wee box with little rubber aerial – no connection needed to the unconnectable JasJar – great “only” $US599! On that basis with all the money I save by not using Vodafone’s service I could afford one – then I shall be able to use Vodafone’s service much more – pay them more money and so on. I have given up trying to convince Voda to carry out a customer survey in the district – they may find I am not alone and for the price of a antenna they could be getting additional revenue – but I digress. I got a lead from AC technologies, the Techo selected a plug (MCX RG316) off the shelf – it seemed to fit Ok but once fitted to a cable and FME socket it’s all wobbly and does not maintain connection. So hopefully they will have alternatives – here’s hoping.

Digs

120 posts

Master Geek

#32140 3-Apr-2006 20:20

..."So I then go hunting for a signal booster – great idea, antenna on the roof wired down to snazzy wee box with little rubber aerial – no connection needed to the unconnectable JasJar – great “only” $US599!"...

Please post product information on site, so I can review.Thx

AliExpress

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Digs

120 posts

Master Geek

#32157 4-Apr-2006 06:08

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CURRENT STATUS OF MY RESEARCH : There are no known External GSM adapters available for the JAS JAR ( ak Qtek 9000m ak O2 Xda Exec, the manufacture is HTC Universal ref: http://www.htc.com.tw/company/index.html ). As per comments of UK forums.

An adatper is needed to fit different brands of atennas to the device. And there are some great antennas ou there that would increase signal 15 fold.

I personally dont believe it. Its just that the manufactures have not been helpful in getting over this issue. There are no comments yet by them.

Watch this space...

QUESTON : Can some on tell me how to make my house a bluetooth hot zone for 2G/3G ??

Fe3o4

12 posts

Geek

#32159 4-Apr-2006 07:14

Digs, sorry make that $699
http://www.digitalantenna.com/cellamprep_DA4000SBR.html

Digs

120 posts

Master Geek

#32165 4-Apr-2006 08:25

Here is hope...

from the same site posted by Fe3o4

http://www.digitalantenna.com/connectors.html

ALSO AVAILABLE:
Custom made cable extensions with any connector!
Example: RG8 cable with N connectors

Scroll down to bottom....

I think I will call them..

freitasm

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#32166 4-Apr-2006 08:25

Digs: Can some on tell me how to make my house a bluetooth hot zone for 2G/3G ??

Please started another discussion since this is off-topic.

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