LimeSDR Update - Good!
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Simon Brown
Hi,
Looks like the Lime boys and their supporters have worked out the simple hardware changes to really get the LimeSDR rocking.
https://discourse.myriadrf.org/t/happy-days-are-here-again-limesdr-lives-in-hf/725
Here’s the 88-108MHz band here at Casa Chaos (see attachment). If all is good I’ll issue Preview 5a early next week with the LimeSDR updates.
Simon Brown, G4ELI
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So Simon, how hard is it to take the transformer out? Should the Lime guys do this and not the customer? Vincent
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MIKE DURKIN <Patriot121@...>
It's not the transformer thats the problem but a low value inductor across the I/Q lines that are next to the transformer....
From: sdr-radio-com@... on behalf of MV Elttba altectogo@... [sdr-radio-com]
Sent: Saturday, February 11, 2017 12:33:15 PM To: sdr-radio-com@... Subject: [sdr-radio-com] Re: LimeSDR Update - Good! So Simon, how hard is it to take the transformer out? Should the Lime guys do this and not the customer?
Vincent
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Simon Brown
Vincent,
Not sure J
Simon Brown, G4ELI
From: sdr-radio-com@... [mailto:sdr-radio-com@...]
Sent: 11 February 2017 20:33 To: sdr-radio-com@... Subject: [sdr-radio-com] Re: LimeSDR Update - Good!
So Simon, how hard is it to take the transformer out? Should the Lime guys do this and not the customer? Vincent
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Siegfried Jackstien
as already noted ... it is just removing a coil on the lime hp some user reported it is an easy fix a user wrote that the coil just "ppped olff" when he touched it but i am guessing that is seldom ... so fire up your soldering iron and use a good magnifier then desoldering should be easy (sadly i do not own a lime ... so can not say more details ... but that is what i read somewhere else) dg9bfc sigi Am 11.02.2017 um 20:33 schrieb MV
Elttba altectogo@... [sdr-radio-com]:
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Paul NN4F
Make sure you take the right thing off, someone thought it was the coil you could see, is a smt coil See image for location, it was me, I just pushed on it with my nail and it came off.... MN18 is the part, it will leave the two solder pads... Paul - NN4F
On Sat, Feb 11, 2017 at 4:21 PM, Siegfried Jackstien siegfried.jackstien@... [sdr-radio-com] <sdr-radio-com@...> wrote:
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then how difficult is it to remove it? Vincent
On Sat, Feb 11, 2017 at 12:40 PM, MIKE DURKIN Patriot121@... [sdr-radio-com] <sdr-radio-com@...> wrote:
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Thanks Paul. maybe the Lime guys will remedy this in the next production run? Vincent
On Sat, Feb 11, 2017 at 2:11 PM, Paul Jones paul@... [sdr-radio-com] <sdr-radio-com@...> wrote:
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doug
On 02/11/2017 05:27 PM, MV Elttba
altectogo@... [sdr-radio-com] wrote:
Perhaps it confuses people to call it a "coil"—they might be looking for a physical coil. Call it an inductor. --doug, retired RF Engineer
-- Blessed are the peacemakers...for they shall be shot at from both sides.--A.M,Greeley
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Paul NN4F
Doug. Correct, at first I thought it was the larger ferrite/coil, that could have been a costly mistake
On Sat, Feb 11, 2017 at 5:58 PM, Doug dmcgarrett@... [sdr-radio-com] <sdr-radio-com@...> wrote:
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Andrew O'Brien <k3ukandy@...>
Reading all this is making forget the regret I had for not ordering one last year. Andy K3UK
On Sat, Feb 11, 2017 at 9:24 PM, Paul Jones paul@... [sdr-radio-com] <sdr-radio-com@...> wrote:
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me too Andy, but the brave scouts before us most likely saved a lot of aggravation. Thank god for Simon Brown's SDR Console and Paul and the fellow who found the thingy to remove. I only LimeSDR folk amend the next batch so that the second wave of purchaser's will not have to modify their board!!!!!! Vincent
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Simon Brown
It does seem to be working quite well now.
Simon Brown, G4ELI
From: sdr-radio-com@... [mailto:sdr-radio-com@...]
Sent: 12 February 2017 03:06 To: sdr-radio-com@... Subject: Re: [sdr-radio-com] Re: LimeSDR Update - Good!
me too Andy, but the brave scouts before us most likely saved a lot of aggravation. Thank god for Simon Brown's SDR Console and Paul and the fellow who found the thingy to remove. I only LimeSDR folk amend the next batch so that the second wave of purchaser's will not have to modify their board!!!!!! Vincent
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Bernard Malet
Simon, You who have the LimeSDR 1.4 can you, please make a screenshot to see the signal of all the Long Wave transmitters.from home Range 100 KHz to 300 KHz Tell me with what type of antenna you receive this low band What modification have you made? Thank you in advance for your help Berenard
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Siegfried Jackstien
let me do an educated guess ... he unsoldered that one coil (that we had a few posts before) in parallel to the one input transformer ... (it short circuits low end signals) ... if you live to a stron local mw station ... then you should add a notch filter for that station ... or for the whole mw band otherwise these strong station(s) may mask out lower signals dg9bfc sigi Am 12.02.2017 um 13:23 schrieb
malet-bernard@... [sdr-radio-com]:
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Simon Brown
Me,
I’ve done nothing yet. There’s a fully-modified LimeSDR on its way to me by courier, should be here on Tuesday I think, then I’ll run some quick tests.
Simon Brown, G4ELI
From: sdr-radio-com@... [mailto:sdr-radio-com@...]
Sent: 12 February 2017 13:47 To: sdr-radio-com@... Subject: Re: [sdr-radio-com] Re: LimeSDR Update - Good!
let me do an educated guess ... he unsoldered that one coil (that we had a few posts before) in parallel to the one input transformer ... (it short circuits low end signals) ... if you live to a stron local mw station ... then you should add a notch filter for that station ... or for the whole mw band otherwise these strong station(s) may mask out lower signals dg9bfc sigi
Am 12.02.2017 um 13:23 schrieb malet-bernard@... [sdr-radio-com]:
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paul newcombe <G6YZC@...>
I think you do not give yourself enough kudos. Without you and SDRC there would have been far less people questioning the V1.4 and it may wall have remained a 700MHz LTE radio. That said the 700MHz LTE market is a great one for Lime to aim for.
Thank you.
Paul N2EME
From: sdr-radio-com@... on behalf of 'Simon Brown' simon@... [sdr-radio-com] <sdr-radio-com@...>
Sent: Sunday, February 12, 2017 11:52 AM To: sdr-radio-com@... Subject: RE: [sdr-radio-com] Re: LimeSDR Update - Good! Me,
I’ve done nothing yet. There’s a fully-modified LimeSDR on its way to me by courier, should be here on Tuesday I think, then I’ll run some quick tests.
Simon Brown, G4ELI
From: sdr-radio-com@... [mailto:sdr-radio-com@...]
let me do an educated guess ... he unsoldered that one coil (that we had a few posts before) in parallel to the one input transformer ... (it short circuits low end signals) ... if you live to a stron local mw station ... then you should add a notch filter for that station ... or for the whole mw band otherwise these strong station(s) may mask out lower signals dg9bfc sigi
Am 12.02.2017 um 13:23 schrieb malet-bernard@... [sdr-radio-com]:
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MIKE DURKIN <Patriot121@...>
N2EME i have a question for you .. i dont have any one in my area to ask this question that im aware of ....
Is there such a thing as a quadrature transformer for 12Ghz that is used the same way as T6 of Tx2_1 that your aware of?
From: sdr-radio-com@... <sdr-radio-com@...> on behalf of paul newcombe G6YZC@... [sdr-radio-com]
Sent: Sunday, February 12, 2017 8:58 AM To: sdr-radio-com@... Subject: Re: [sdr-radio-com] Re: LimeSDR Update - Good! I think you do not give yourself enough kudos. Without you and SDRC there would have been far less people questioning the V1.4 and it may wall have remained a 700MHz LTE radio. That said the 700MHz LTE market is a great one for Lime to aim for.
Thank you.
Paul N2EME From: sdr-radio-com@... on behalf of 'Simon Brown' simon@... [sdr-radio-com]
Sent: Sunday, February 12, 2017 11:52 AM To: sdr-radio-com@... Subject: RE: [sdr-radio-com] Re: LimeSDR Update - Good! Me,
I’ve done nothing yet. There’s a fully-modified LimeSDR on its way to me by courier, should be here on Tuesday I think, then I’ll run some quick tests.
Simon Brown, G4ELI
From: sdr-radio-com@... [mailto:sdr-radio-com@...]
let me do an educated guess ... he unsoldered that one coil (that we had a few posts before) in parallel to the one input transformer ... (it short circuits low end signals) ... if you live to a stron local mw station ... then you should add a notch filter for that station ... or for the whole mw band otherwise these strong station(s) may mask out lower signals dg9bfc sigi
Am 12.02.2017 um 13:23 schrieb malet-bernard@... [sdr-radio-com]:
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