Date   

Re: FDM Duo for sale

mike bayard
 

it is sold


FDM Duo for sale

KF4VAR
 

Saw this on QTH thought I would pass it on in case anyone is interested.

https://swap.qth.com/view_ad.php?counter=1462584

Regards & 73
Carr KF4VAR


Re: +5V on Expansion Socket

Vianney Colombat
 


Hello Andy,

pin 9 hasn't a dedicated voltage regulator, some sort of short circuit protection is present but of course we don't recommend to stress it.

Tens of mA can be draw, we can assume that 100mA is the maximum output current, but this is not factory tested.

Vianney

Il 24/10/2019 21:23, Andy G4JNT ha scritto:
What is the maximum current I can reasonably draw from this (Pin 9 of the D type).  I want to use this supply to power an accessory.   

Assume it comes from a conventional voltage regulator that can withstand a short circuit for a brief period, should this occur.

_._,_._,_


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Re: FDM Duo & Xiegu XPA125B

KF4VAR
 
Edited

Cant help  but post again on the really excellent funkperlen blogspot article, particularly this link
http://ludens.cl/Electron/mosfetamps/amps.html
  I have learned some things I did not know. Many kind thanks!

Regards &73
Carr KF4VAR


Re: FDM Duo & Xiegu XPA125B

KF4VAR
 

Hi Klaus
Great information thanks very much.

Regards & 73
Carr KF4VAR


Re: FDM Duo & Xiegu XPA125B

Klaus Brosche, DK3QN <klaus.brosche@...>
 

RM Italy HLA-305V: to whom it may be of interest:

There was a review in QST magazine, issue April 2016, on the RM HLA-305V. It's availabe in the web.

In addition, there was a more technical review (Gain over Frequency, Return Loss (=input SWR) over
Frequency, TX IMD, etc.) by Adam Farson, dated April 2015. This can be found here:

Plus, there was a brief comparison between the output circuitry of the HLA-300 and the HLA-305V,
which can be found here (in German, use Google translate, please):
http://funkperlen.blogspot.com/2015/02/hla-305v-nachfolger-der-hla-300.html
(good pictures of the interior in comparison)

73, Klaus, DK3QN


Am 24.10.2019 um 04:00 schrieb KF4VAR:

Lots of great information...Kjell thanks for your comment and recommendation.

Klaus,  I have decided  that the HR50 is going to be what I end up buying. I will look at the Funkamateur. Appreciate your evaluation of the power differences as well... something to think about when carrying a backpack up a mountain, whether  half an S unit is worth sacrificing water and food for a larger amp and battery.....

Clint, I just found the HR50/Duo interface on their site, thanks for this.

Kjell  I want to join Klaus and everyone in wishing you a speedy recovery, moreover,  how much your participation and interest is appreciated. Get well and my best wishes.

I like the idea of building the HR50, I have not built anything in years.  Additionally knowing the inside makes repairs easier particularly given the  support thats available. I was considering buying the am already assembled (they offer that service) but I dont think I want to go that route.  All I am waiting for is whether Ecuadorian customs is going  to be decent with their  duties. We will see.

Thanks to all of you and again,  Kjell best wishes for a speedy recovery.

73
Carr KF4VAR



Re: Duo X plus S3 including upgrades...

Wolfy Wolfram
 

I agree about the IC-7300.  While it is better than any analog radio that you ever owned, it doesn't come close the ELAD Duo in performance.
When you add the SW2 software into the mix.  The game is over for ICOM.   I recently purchased a KX2 Elecraft to use out in the park on QRP days.
It also exceeds the performance of the IC-7300. So much so that I sold my IC-7300 to a friend that didn't have any SDR equipment.

I hope the S3 and X models raise the SDR bar even further.  (hmmm ... might have to sell my S2 and one of my Duo's to do the upgrade)


Programmable band select voltage converter for band select

Chris Moore
 

Hi - I've been trying unsuccessfully to use the band select voltage output from the QSF-06 to switch bands on my Elecraft KXPA100.  The output voltages match the Yaesu 817 spec as designed, but the amp consistently switches to a higher band than it should (it's been back to Elecraft but still the same).

Is there a small voltage converter I could use to drop the voltages so it works as intended?  The difference doesn't look to be linear so think I need something programmable.

Thanks -= Chris

AG5RR


Re: Duo X plus S3 including upgrades...

Paul Jones
 

Thanks David,

Glad to hear you are pleased with our Elad products....

Paul EladUSA 


On Oct 25, 2019, at 11:18, David via Groups.Io <david.g8iic@...> wrote:

My interest in radio only goes back 60 years, with my G8 call issued in 1972 (lapsing circa 1975).  My licence was re-issued in 2014 and I bought an FDM-DUO, using it for a year initially. Bought a 7300 for more power and used it for a couple of years and then played around with the FDM-DUO again as well and decided its receive performance was better (subjectively at least) than the 7300.

In May, I traded in the 7300 against the DUO-ART 120 and haven’t looked back.  Not only pleased with performance, but like to use a large display - on an old laptop - maybe an age thing!.  Restricted in what I can do antenna-wise - no masts or towers - we live in a Conservation Area, so I have 5 Inverted Vees (fed from the same feed-point), resonant on 40m (6m as well), 20m, 17m, 15m and 10m.  The DUO-ART’s ATU allows me to operate on 60m (at <100W, of course) and 12m, which I couldn’t do with the 7300 with these antennae.

I envy G1PIB being allowed to operate 7 hours a day.  The station manager here wouldn’t stand for that!  Duo X sounds great, but I might have a problem with purchase authorisation!

I find the group useful and interesting and Elad very helpful on the couple of occasions I’ve needed help.  Thanks to all.

David G8IIC

On 24 Oct 2019, at 22:06, g1pib via Groups.Io <g1pib@...> wrote:

Well I cannot wait for the S3.. and the Duo X ..  coming next year and some updates  on the SW2 Software ...
My interest in radio goes back 65 years !   and have bought and used a great deal of equipment....
but in my mind I have never come across such wonderful technology such that Elad  are producing....
The SW2 software is second to none.. and my Duo and ART  are a pleasure to use.
Yes you may have think about the setting up the station but that's all for the good in a nice big leaning curve..
ant the results speak for themselves.
Having retired ten years ago I am probably using this radio maybe 7 hours a day sometimes into the night
at It never ceases to amaze me on it's ability to receive signals  ( bold sentence coming  up )  Used a  fellow amateur's
 IC-7300 recently and good  though it maybe ...not for me .

This just my opinion ...Elad keep up the good work and don't tell the wife what I am buying next year.


Re: S2 Blue LED on the Unit

Paul Jones
 

George,

I can send you a new LED if you feel comfortable fitting it or send the unit back and I can replace it, but if radio is working fine you could always leave it alone for now

Paul EladUSA 


On Oct 23, 2019, at 23:12, George Stein - NJ3H via Groups.Io <nj3h@...> wrote:

I have an S2 SDR.  Starting this evening, I noticed the little blue LED on the unit itself only lights up for a ~1/4 second when the on/off switch is switched to on.  It does not stay lit up as in the past.

Have others had this issue?  The radio works perfectly otherwise.

Any thoughts?

Regards,

George, NJ3H
Redmond, Oregon USA


Re: Duo X plus S3 including upgrades...

David <david.g8iic@...>
 

My interest in radio only goes back 60 years, with my G8 call issued in 1972 (lapsing circa 1975).  My licence was re-issued in 2014 and I bought an FDM-DUO, using it for a year initially. Bought a 7300 for more power and used it for a couple of years and then played around with the FDM-DUO again as well and decided its receive performance was better (subjectively at least) than the 7300.

In May, I traded in the 7300 against the DUO-ART 120 and haven’t looked back.  Not only pleased with performance, but like to use a large display - on an old laptop - maybe an age thing!.  Restricted in what I can do antenna-wise - no masts or towers - we live in a Conservation Area, so I have 5 Inverted Vees (fed from the same feed-point), resonant on 40m (6m as well), 20m, 17m, 15m and 10m.  The DUO-ART’s ATU allows me to operate on 60m (at <100W, of course) and 12m, which I couldn’t do with the 7300 with these antennae.

I envy G1PIB being allowed to operate 7 hours a day.  The station manager here wouldn’t stand for that!  Duo X sounds great, but I might have a problem with purchase authorisation!

I find the group useful and interesting and Elad very helpful on the couple of occasions I’ve needed help.  Thanks to all.

David G8IIC

On 24 Oct 2019, at 22:06, g1pib via Groups.Io <g1pib@...> wrote:

Well I cannot wait for the S3.. and the Duo X ..  coming next year and some updates  on the SW2 Software ...
My interest in radio goes back 65 years !   and have bought and used a great deal of equipment....
but in my mind I have never come across such wonderful technology such that Elad  are producing....
The SW2 software is second to none.. and my Duo and ART  are a pleasure to use.
Yes you may have think about the setting up the station but that's all for the good in a nice big leaning curve..
ant the results speak for themselves.
Having retired ten years ago I am probably using this radio maybe 7 hours a day sometimes into the night
at It never ceases to amaze me on it's ability to receive signals  ( bold sentence coming  up )  Used a  fellow amateur's
 IC-7300 recently and good  though it maybe ...not for me .

This just my opinion ...Elad keep up the good work and don't tell the wife what I am buying next year.


Re: S2 Blue LED on the Unit

Oidar
 

Yepp, I have had this problem a few years ago and it was the LED itself which was broken

Since the S2 was under warranty i contacted Franco who kindly gave me two choices:
1. Send back to ELAD for repair
2. ELAD send me spare LED's and i replace them myself

I opted for nr 2 as i have electronics experience and proper tools, and it was a piece of cake to replace.
Since then it has been working fine 24/7/365 for 3 or 4 years (i don't remember exactly).

Maybe it's a good idea for you to contact Paul at ELAD?

//Mats


Duo X plus S3 including upgrades...

Morris G1PIB
 

Well I cannot wait for the S3.. and the Duo X ..  coming next year and some updates  on the SW2 Software ...
My interest in radio goes back 65 years !   and have bought and used a great deal of equipment....
but in my mind I have never come across such wonderful technology such that Elad  are producing....
The SW2 software is second to none.. and my Duo and ART  are a pleasure to use.
Yes you may have think about the setting up the station but that's all for the good in a nice big leaning curve..
ant the results speak for themselves.
Having retired ten years ago I am probably using this radio maybe 7 hours a day sometimes into the night
at It never ceases to amaze me on it's ability to receive signals  ( bold sentence coming  up )  Used a  fellow amateur's
 IC-7300 recently and good  though it maybe ...not for me .

This just my opinion ...Elad keep up the good work and don't tell the wife what I am buying next year.


+5V on Expansion Socket

Andy G4JNT
 

What is the maximum current I can reasonably draw from this (Pin 9 of the D type).  I want to use this supply to power an accessory.   

Assume it comes from a conventional voltage regulator that can withstand a short circuit for a brief period, should this occur.


Re: S2 Calibration question for Elad

Paul Jones
 

Not sure why it has happened in both, but I Do NOT suggest using contact cleaner on the PC :)

Reset it in SW2 and then try the other programs

Paul EladUSA 


On Oct 24, 2019, at 13:02, Tony_AD0VC <canthony15@...> wrote:


Hmm. Thats what I thought. I have been running SDRC for most of the time but without using SDRC calibration. Instead, I had calibrated in SW2. Today, for the first time in ages, I started up SW2 to make a gain check and I found my frequency was substantially off. I had not noticed it being off in SDRC. But when I went back to SDRC it was also off. So now I am not sure when things went wrong.

Oh well. In the old days I would have gotten out some contact cleaner or something.

Tony


From: EladSDR@groups.io <EladSDR@groups.io> on behalf of Paul NN4F <paul@...>
Sent: Thursday, October 24, 2019 10:50 AM
To: EladSDR@groups.io <EladSDR@groups.io>
Subject: Re: [EladSDR] S2 Calibration question for Elad
 
Quick answer... yes saved to radio

--
Paul Jones - NN4F
Email: paul@...
http://www.nn4f.com
http://www.facebook.com/NN4F.Radio
http://www.facebook.com/groups/sdrplay
Twitter: @nn4f_radio


On Oct 24, 2019, at 12:40, Tony_AD0VC <canthony15@...> wrote:


If I do the SW2 calibration procedure, namely feeding in a known signal at the LO frequency, setting a marker on it and clicking the set button, will this be saved in the hardware such that third party software calibration (like SDR Console or HDSDT for example) will be affected?

Thanks,

Tony


Re: S3

Paul Jones
 

Trying to keep the costs down, but yes won’t be dirt cheap....


On Oct 24, 2019, at 10:50, Wily <wily@...> wrote:


That is wonderful, of course, but 50MHz - 2GHz wouldn't be a cheap pleasure ... right?
 
----- Original Message -----
From: Paul NN4F <paul@...>
Reply-To: <EladSDR@groups.io>
To: <EladSDR@groups.io>
Sent: 24.10.2019 17:45:15
Subject: Re: [EladSDR] S3

The optional add on will cover 50mhz-2ghz when available....

--
Paul Jones - NN4F
Email: paul@...
http://www.nn4f.com
http://www.facebook.com/NN4F.Radio
http://www.facebook.com/groups/sdrplay
Twitter: @nn4f_radio


On Oct 24, 2019, at 10:31, Wily <wily@...> wrote:


Yes, for the base model.
135-148MHz, 108-125MHz (optional),
 frequency extensions are optionals for additional cost.
 
----- Original Message -----
From: Harry White <hwhite1@...>
Reply-To: <EladSDR@groups.io>
To: <EladSDR@groups.io>
Sent: 23.10.2019 20:54:55
Subject: [EladSDR] S3

I’m new to the group. Where can I read about the S3? What is improved over previous models? I went to the ELAD Italy home page and the radio is over $1K with VAT.

 

73,

 

Harry K1RSA




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Re: S2 Calibration question for Elad

Tony_AD0VC
 

Hmm. Thats what I thought. I have been running SDRC for most of the time but without using SDRC calibration. Instead, I had calibrated in SW2. Today, for the first time in ages, I started up SW2 to make a gain check and I found my frequency was substantially off. I had not noticed it being off in SDRC. But when I went back to SDRC it was also off. So now I am not sure when things went wrong.

Oh well. In the old days I would have gotten out some contact cleaner or something.

Tony


From: EladSDR@groups.io <EladSDR@groups.io> on behalf of Paul NN4F <paul@...>
Sent: Thursday, October 24, 2019 10:50 AM
To: EladSDR@groups.io <EladSDR@groups.io>
Subject: Re: [EladSDR] S2 Calibration question for Elad
 
Quick answer... yes saved to radio

--
Paul Jones - NN4F
Email: paul@...
http://www.nn4f.com
http://www.facebook.com/NN4F.Radio
http://www.facebook.com/groups/sdrplay
Twitter: @nn4f_radio


On Oct 24, 2019, at 12:40, Tony_AD0VC <canthony15@...> wrote:


If I do the SW2 calibration procedure, namely feeding in a known signal at the LO frequency, setting a marker on it and clicking the set button, will this be saved in the hardware such that third party software calibration (like SDR Console or HDSDT for example) will be affected?

Thanks,

Tony


Re: Interference 7322 khz

Paul Jones
 

George, what does the waterfall look like? 
Also look up sigidwiki great for identifying signals, looks like a multi modem signal but can be better identified using water fall image rather than just the spectrum 

Paul EladUSA 


On Oct 24, 2019, at 11:59, George Stein - NJ3H via Groups.Io <nj3h@...> wrote:


Hi Raimund,

I am using a Perseus and Elad.  The signal was S7 here.  For the last two years I have had so much interference here that I figured some neighbor did it again to me.

Thank you for your reply.  I appreciate it.

Regards,
George, NJ3H
Redmond, Oregon USA
DMR ID:  3141315
AllStar Node:  49246
EchoLink Node NJ3H-L:  3135
IRLP Node:  3659


On Thursday, October 24, 2019, 2:16:05 AM PDT, Raimund <raimund.forstmeier@...> wrote:


Try listen this frequency using a DSP Filter like the MFJ-781 - Set it to HF Packet or VHF Packet/Clover - Now you realize that it is not a Interference.

Raimund
.



Re: S2 Calibration question for Elad

Paul NN4F
 

Quick answer... yes saved to radio

--
Paul Jones - NN4F
Email: paul@...
http://www.nn4f.com
http://www.facebook.com/NN4F.Radio
http://www.facebook.com/groups/sdrplay
Twitter: @nn4f_radio


On Oct 24, 2019, at 12:40, Tony_AD0VC <canthony15@...> wrote:


If I do the SW2 calibration procedure, namely feeding in a known signal at the LO frequency, setting a marker on it and clicking the set button, will this be saved in the hardware such that third party software calibration (like SDR Console or HDSDT for example) will be affected?

Thanks,

Tony


S2 Calibration question for Elad

Tony_AD0VC
 

If I do the SW2 calibration procedure, namely feeding in a known signal at the LO frequency, setting a marker on it and clicking the set button, will this be saved in the hardware such that third party software calibration (like SDR Console or HDSDT for example) will be affected?

Thanks,

Tony

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