Date   

FS: ELAD FDM Duo

Keith NZ5F <ak6zzel09@...>
 

All:

I need to fix and upgrade some antennas so unfortunately am going to sell my ELAD FDM Duo which is in like new condition. Below is copy of ad I posted in QRZ.

FS: ELAD FDM Duo. Very nice condition. Only selling to fund some shack antenna upgrades that are desperately needed. This radio is fantastic. Worked into Europe from Texas with 5W on 20m during recent contest. Great reports on audio. Comes with cables, power cord and microphone. $815 shipped to CONUS only. PayPal only. Thanks, Keith NZ5F

Feel free to contact me for photos or if you would like to do a test on the air we can do that too. 

Thanks & 73,

Keith
Nz5f 


--
Thanks & 73,

Keith
NZ5F


DMR xHE-ACC Capability with ELAD FDM-SW2 Version 3.027?

Richard Langley
 

The subject says it all. VoA is currently using this mode for DRM test transmissions from Greenville. Is it possible (with sufficient signal strength) to decode the data/audio with an ELAD receiver and software?

-- Richard Langley


Re: DUO-ART :: FT-817 MODE #duo-art #ft-817

Vianney Colombat
 


See attached file.

Vianney

Il 20/01/2020 15:22, Vianney Colombat ha scritto:
It's also possible to insert a relay between the TX-GND signal and the TIP signal of the DUO-ART to isolate the connection.

To go further it's necessary to know if the TX-GND signal/wire is present inside the CT-62 cable.

I will try to quickly provide a complete connection diagram.


Le informazioni contenute in questo messaggio di posta elettronica sono riservate e confidenziali e ne è vietata la diffusione in qualunque modo eseguita (DL 196/2003). Qualora Lei non fosse la persona a cui il presente messaggio è destinato, La invitiamo ad eliminarlo e a non leggerlo, dandone gentilmente comunicazione al mittente.

The information contained in this e-mail and any attachments is confidential and may well also be legally privileged (DL 196/2003). If you are not among the named recipients, please notify the sender immediately by reply e-mail and then delete this message from your system, do not use the contents for any purpose whatsoever nor disclose them to anyone else.


Re: Elad FDM-DUO /// PTT Out failed?

Vianney Colombat
 

 
Hello Paul,
 
no, there is no other speed between fast and 2 sec yet ... What do you mean exactly with sync to clock ?
 
This resistor is just a basic protection.
 
Regards,
 
Vianney
 
 
From: "Paul Andrews" <pandrews@...>
To: EladSDR@groups.io
Date: Thu, 6 Feb 2020 22:10:01 -0500
Subject: Re: [EladSDR] Elad FDM-DUO /// PTT Out failed?
 
Vianney,
 
What is the purpose of the 1-ohm resistor at the collector of Q14?
 
Q14 is the NPN transistor used for the PTT output.
 
73 - Paul - W2HRO
 
 
 
On Mon, Feb 3, 2020 at 9:41 AM Paul Andrews via Groups.Io <pandrews=telvue.com@groups.io> wrote:
Vianney,
 
Thanks for confirmation.  I replaced Q14 and my PTT out is working again.
 
The BC817 cost only $0.06 but the replacement requires some planning.   The SOT-23 device is very small.  Good soldering tools and a magnifying glass is required with my 60 yr old eyes.
 
It's far better not to damage Q14.
 
I have another question:. Does the SW2 waterfall offer a speed between "fast" and "2 sec"?    For digital modes - 1 second and sync to clock would be very helpful.
 
73 - Paul - W2HRO
 
 
73 - Paul - W2HRO
 
 
 
 
 
On Mon, Feb 3, 2020, 06:32 Vianney Colombat <vianney@...> wrote:

Hello Paul,

Q14 is a BC817. Open a support ticket here if you need further assistance.

Vianney

 
Il 01/02/2020 03:45, Paul Andrews ha scritto:
Hello.  Never work when you're tired.  :(

I accidentally applied 12vdc (no current limit) to my Elad DUO PTT Out port.

I believe I might have fried the NPN transistor.   An ohmmeter shows 10k ohms across the PTT but no path to ground is seen when the radio is keyed.

I opened the radio and found Q14 looks like the PTT NPN.   Can anyone verify this is the PTT NPN?

Has anyone replaced this Q14?    Any big risks.

I'd hate to send this back to Italy for repair.

73 - Paul - W2HRO





 


Le informazioni contenute in questo messaggio di posta elettronica sono riservate e confidenziali e ne è vietata la diffusione in qualunque modo eseguita (DL 196/2003). Qualora Lei non fosse la persona a cui il presente messaggio è destinato, La invitiamo ad eliminarlo e a non leggerlo, dandone gentilmente comunicazione al mittente.

The information contained in this e-mail and any attachments is confidential and may well also be legally privileged (DL 196/2003). If you are not among the named recipients, please notify the sender immediately by reply e-mail and then delete this message from your system, do not use the contents for any purpose whatsoever nor disclose them to anyone else.
 
 
 
 
 
 
--
Paul Andrews
SVP - Sales & Marketing
TelVue Corporation
1-800-885-8886 x102

Le informazioni contenute in questo messaggio di posta elettronica sono riservate e confidenziali e ne è vietata la diffusione in qualunque modo eseguita (DL 196/2003). Qualora Lei non fosse la persona a cui il presente messaggio è destinato, La invitiamo ad eliminarlo e a non leggerlo, dandone gentilmente comunicazione al mittente.

The information contained in this e-mail and any attachments is confidential and may well also be legally privileged (DL 196/2003). If you are not among the named recipients, please notify the sender immediately by reply e-mail and then delete this message from your system, do not use the contents for any purpose whatsoever nor disclose them to anyone else.


Re: Elad FDM-DUO /// PTT Out failed?

Paul Andrews
 

Vianney,

What is the purpose of the 1-ohm resistor at the collector of Q14?

Q14 is the NPN transistor used for the PTT output.

73 - Paul - W2HRO



On Mon, Feb 3, 2020 at 9:41 AM Paul Andrews via Groups.Io <pandrews=telvue.com@groups.io> wrote:
Vianney,

Thanks for confirmation.  I replaced Q14 and my PTT out is working again.

The BC817 cost only $0.06 but the replacement requires some planning.   The SOT-23 device is very small.  Good soldering tools and a magnifying glass is required with my 60 yr old eyes.

It's far better not to damage Q14.

I have another question:. Does the SW2 waterfall offer a speed between "fast" and "2 sec"?    For digital modes - 1 second and sync to clock would be very helpful.

73 - Paul - W2HRO


73 - Paul - W2HRO






On Mon, Feb 3, 2020, 06:32 Vianney Colombat <vianney@...> wrote:

Hello Paul,

Q14 is a BC817. Open a support ticket here if you need further assistance.

Vianney


Il 01/02/2020 03:45, Paul Andrews ha scritto:
Hello.  Never work when you're tired.  :(

I accidentally applied 12vdc (no current limit) to my Elad DUO PTT Out port.

I believe I might have fried the NPN transistor.   An ohmmeter shows 10k ohms across the PTT but no path to ground is seen when the radio is keyed.

I opened the radio and found Q14 looks like the PTT NPN.   Can anyone verify this is the PTT NPN?

Has anyone replaced this Q14?    Any big risks.

I'd hate to send this back to Italy for repair.

73 - Paul - W2HRO





 


Le informazioni contenute in questo messaggio di posta elettronica sono riservate e confidenziali e ne è vietata la diffusione in qualunque modo eseguita (DL 196/2003). Qualora Lei non fosse la persona a cui il presente messaggio è destinato, La invitiamo ad eliminarlo e a non leggerlo, dandone gentilmente comunicazione al mittente.

The information contained in this e-mail and any attachments is confidential and may well also be legally privileged (DL 196/2003). If you are not among the named recipients, please notify the sender immediately by reply e-mail and then delete this message from your system, do not use the contents for any purpose whatsoever nor disclose them to anyone else.



--
Paul Andrews
SVP - Sales & Marketing
TelVue Corporation
1-800-885-8886 x102


FS: FDM-S2 RX

Mike Chace-Ortiz
 

Evening All

I’m putting my Elad FDMS2 RX up for sale at $250.

Lightly used, kept in a non-smoking environment and in excellent condition with all accessories.

Will ship to continental US location only.

Please contact me off the list if interested.

73
—mco
AB1TZ


Re: FDM DUO Attenuator behaviour

Tony_AD0VC
 

The S2 spec says 12db. I think the S1 was 20db. When using the Elad EXtio dll with my S2 and HDSDR or other SDR applications, the DLL always says 20db for the attenuation but I suspect that the dll was written in the S1 days and was never updated for the later radios. The actual attenuation is set by the hardware of course. Even SDR Console shows a "20 db" attenuation setting with my S2, probably for historical reasons. This has been a "wart" for a while.

Tony


From: EladSDR@groups.io <EladSDR@groups.io> on behalf of Neil Smith G4DBN <neil@...>
Sent: Thursday, February 6, 2020 12:26 PM
To: EladSDR@groups.io <EladSDR@groups.io>
Subject: Re: [EladSDR] FDM DUO Attenuator behaviour
 
Indeed it does, about 11.8dB 
Odd...
Neil

-------- Original message --------
From: Tony_AD0VC <canthony15@...>
Date: 06/02/2020 19:17 (GMT+00:00)
To: EladSDR@groups.io
Subject: Re: [EladSDR] FDM DUO Attenuator behaviour

Assuming a 50 ohm load, that looks like a 12-13 db attenuator to me (?).

Tony


From: EladSDR@groups.io <EladSDR@groups.io> on behalf of Neil Smith G4DBN <neil@...>
Sent: Thursday, February 6, 2020 10:07 AM
To: EladSDR@groups.io <EladSDR@groups.io>
Subject: Re: [EladSDR] FDM DUO Attenuator behaviour
 

Attenuation is fixed at 20dB Bob, R67/68/69 switched in by RL2.

I guess you are hearing the faint click of RL2 when you enable attenuation? If you can measure the input impedance, you could check if the input impedance goes weird, with R69 gone open circuit or a relay contact fault or a short to ground.

Full input diagram is attached to message https://groups.io/g/EladSDR/message/14141

Neil G4DBN

On 06/02/2020 16:17, Bob G3PJT wrote:
When I set the attenuator all the signals disappear. Its as if the antenna is disconnected
Is there a setting somewhere to set the level of attenation. My DUO has only just started to do this
I have done a reset and no change
Any ideas?
73 Bob G3PJT


Re: FDM DUO Attenuator behaviour

Neil Smith G4DBN
 

Indeed it does, about 11.8dB 
Odd...
Neil

-------- Original message --------
From: Tony_AD0VC <canthony15@...>
Date: 06/02/2020 19:17 (GMT+00:00)
To: EladSDR@groups.io
Subject: Re: [EladSDR] FDM DUO Attenuator behaviour

Assuming a 50 ohm load, that looks like a 12-13 db attenuator to me (?).

Tony


From: EladSDR@groups.io <EladSDR@groups.io> on behalf of Neil Smith G4DBN <neil@...>
Sent: Thursday, February 6, 2020 10:07 AM
To: EladSDR@groups.io <EladSDR@groups.io>
Subject: Re: [EladSDR] FDM DUO Attenuator behaviour
 

Attenuation is fixed at 20dB Bob, R67/68/69 switched in by RL2.

I guess you are hearing the faint click of RL2 when you enable attenuation? If you can measure the input impedance, you could check if the input impedance goes weird, with R69 gone open circuit or a relay contact fault or a short to ground.

Full input diagram is attached to message https://groups.io/g/EladSDR/message/14141

Neil G4DBN

On 06/02/2020 16:17, Bob G3PJT wrote:
When I set the attenuator all the signals disappear. Its as if the antenna is disconnected
Is there a setting somewhere to set the level of attenation. My DUO has only just started to do this
I have done a reset and no change
Any ideas?
73 Bob G3PJT


Elad @ Hamcation 2020

Paul Jones
 

Hi All

Elad will not be attending Hamcation this year, Franco has urgent business meeting to attend and then will be concentrating on getting the FDM-S3 ready for release by the end of this month, I’ll send some photos out tomorrow of the new case that the s3 will come in. This is slightly larger to allow the 2ghz down converter to be fitted, the 2ghz option will be available by this summer, it will include a bias-t output and also include a gps internal reference oscillator.

Again we are disappointed that we won’t be there but we are using this time to finally get the S3 ready to roll out...

Paul EladUSA
Support@...


Re: FDM DUO Attenuator behaviour

Tony_AD0VC
 

Assuming a 50 ohm load, that looks like a 12-13 db attenuator to me (?).

Tony


From: EladSDR@groups.io <EladSDR@groups.io> on behalf of Neil Smith G4DBN <neil@...>
Sent: Thursday, February 6, 2020 10:07 AM
To: EladSDR@groups.io <EladSDR@groups.io>
Subject: Re: [EladSDR] FDM DUO Attenuator behaviour
 

Attenuation is fixed at 20dB Bob, R67/68/69 switched in by RL2.

I guess you are hearing the faint click of RL2 when you enable attenuation? If you can measure the input impedance, you could check if the input impedance goes weird, with R69 gone open circuit or a relay contact fault or a short to ground.

Full input diagram is attached to message https://groups.io/g/EladSDR/message/14141

Neil G4DBN

On 06/02/2020 16:17, Bob G3PJT wrote:
When I set the attenuator all the signals disappear. Its as if the antenna is disconnected
Is there a setting somewhere to set the level of attenation. My DUO has only just started to do this
I have done a reset and no change
Any ideas?
73 Bob G3PJT


Re: FDM DUO Attenuator behaviour

Neil Smith G4DBN
 

Attenuation is fixed at 20dB Bob, R67/68/69 switched in by RL2.

I guess you are hearing the faint click of RL2 when you enable attenuation? If you can measure the input impedance, you could check if the input impedance goes weird, with R69 gone open circuit or a relay contact fault or a short to ground.

Full input diagram is attached to message https://groups.io/g/EladSDR/message/14141

Neil G4DBN

On 06/02/2020 16:17, Bob G3PJT wrote:
When I set the attenuator all the signals disappear. Its as if the antenna is disconnected
Is there a setting somewhere to set the level of attenation. My DUO has only just started to do this
I have done a reset and no change
Any ideas?
73 Bob G3PJT
_._,_._,_


Re: FDM DUO Attenuator behaviour

NEIL COLEY <neilcoley9@...>
 

Bob

I had a similar situation. 

Did all the on/off and resets but the problem remained 

I disconnect and reconnected the  antenna from the Duo and bingo...back to normal. 

No scientific approach or explanation. Maybe just coincidence 

Worth a try if you haven’t already 

Neil



On 6 Feb 2020, at 16:17, Bob G3PJT <bob@...> wrote:

When I set the attenuator all the signals disappear. Its as if the antenna is disconnected
Is there a setting somewhere to set the level of attenation. My DUO has only just started to do this
I have done a reset and no change
Any ideas?
73 Bob G3PJT


Pre-Selector Filter Boards

Clint Chron
 
Edited

I have some bare filter boards for the QSF-06 and SPF-08 Elad Preselectors.  You can build the filters per the Elad schematics.  I have:
CS-B3.1.0     2 each (3 coil) board)
CS-H5.1.1     1 each (5 coil board)

Price is $10 for all three boards, including shipping and PayPal fees.

73
Clint
W7KEC


FDM DUO Attenuator behaviour

Bob G3PJT
 

When I set the attenuator all the signals disappear. Its as if the antenna is disconnected
Is there a setting somewhere to set the level of attenation. My DUO has only just started to do this
I have done a reset and no change
Any ideas?
73 Bob G3PJT


Re: Firmware Update FDM-DUO without adapter

Alain Reiner
 

hello Charles, all,

sure : ebay. You just hit "micro usb to usb A female" and you'll get a lot of them between 1 and 5 USD.

Best 73's,
Alain F4HFS

Le 04/02/2020 à 15:30, Charles Holliday a écrit :

I’ve had my FDM Duo for ~2 years now. I want to update the firmware but I did not receive (read: do not remember receiving) a micro USB to USB A female adapter for the thumb drive to be used for updates. 


anyone have any ideas on how I could get/make one? Or another way to update the unit?

KG5IRU
Charles 


-- 
Alain Reiner


Re: HF Pre-Selector For a Duo

DL2EBV
 

Hello Clint,
Heinz Stampfl, HB9KOC, has made a filterbank with 8 filters for 0 to 30 MCs. Bypass possible.
Handling by buttons, controler ATMEL AT MEGA 8, with LCD.
I made a new firmware to include the ELAD protocol.
Was not so easy because the layout of the board was ready.
So you have to decide at switch-on which user-interface is to be used: manual or by ELAD.

I think Heinz will offer the filter WaveStar this year as a kit.

Vy 73, Ernst

PS: I will also go on with the interface  for various filter-banks.
Maybe build a new versatile interface-board.


Firmware Update FDM-DUO without adapter

Charles Holliday
 

I’ve had my FDM Duo for ~2 years now. I want to update the firmware but I did not receive (read: do not remember receiving) a micro USB to USB A female adapter for the thumb drive to be used for updates. 


anyone have any ideas on how I could get/make one? Or another way to update the unit?

KG5IRU
Charles 


Re: Powering on FDM-duo #fdm-duo

Lou KI5FTY
 

Thanks for all the responses...  My astron ps is now my duo power switch!

Thanks
Lou ki5fty

On Tue, Feb 4, 2020 at 3:07 AM David via Groups.Io <david.g8iic=btinternet.com@groups.io> wrote:
I’ve been turning my FDM-DUO on and off by the PSU for 4 years - initially by a standalone PSU and since last May by my DUO-ART. No problems so far.

Hope that helps.

David G8IIC


On 4 Feb 2020, at 03:03, Lou KI5FTY <lscalpati@...> wrote:

I have a quick question, is it ok to power on an off the duo by turning on and off the 13.8 power supply.  The only thing I hate about this radio is the power switch is on the back.  I would like to leave the switch on and use my PS as the switch.  Thoughts?

Thanks

Lou ki5fty


Re: Powering on FDM-duo #fdm-duo

David
 

I’ve been turning my FDM-DUO on and off by the PSU for 4 years - initially by a standalone PSU and since last May by my DUO-ART. No problems so far.

Hope that helps.

David G8IIC


On 4 Feb 2020, at 03:03, Lou KI5FTY <lscalpati@...> wrote:

I have a quick question, is it ok to power on an off the duo by turning on and off the 13.8 power supply.  The only thing I hate about this radio is the power switch is on the back.  I would like to leave the switch on and use my PS as the switch.  Thoughts?

Thanks

Lou ki5fty


Re: Powering on FDM-duo #fdm-duo

Tony EI8JK
 

If you have the DUO-ART amplifier, the power connection to the duo is via the ART, that is the ART switches the DUO on and off. So no difference to what you are doing
Tony, EI8JK

On 04/02/2020 03:03, Lou KI5FTY wrote:
I have a quick question, is it ok to power on an off the duo by turning on and off the 13.8 power supply.  The only thing I hate about this radio is the power switch is on the back.  I would like to leave the switch on and use my PS as the switch.  Thoughts?

Thanks

Lou ki5fty