Date   

Re: Elad FDM Duo

Antony Watts
 

To use FDM-SW2 you only need one USB connection, to the RX port. This carries spectrum info to your PC display and CAT commands (tune, band etc) back to your DUO.

You can use the other two USB connections TX (digital audio in/out) and CAT (internal USB <-> TTL logic) separately from, for example, WSJT program to control the DUO.


Re: FDM-DUO rear panel

Paul Andrews
 

Andy,

Thanks so much.

73 - Paul - W2HRO

On Fri, Jun 25, 2021 at 10:09 AM Andy G4JNT <andy.g4jnt@...> wrote:
It works at 70MHz Tx on the 0dBm output perfectly well.   On Rx  a) don't forget to switch out the LP filter, and b) you need to filter out the alias response at 50.88MHz
See  http://www.g4jnt.com/FDM-DUO_at_VHF.pdf   for more about using this radio at 70 and 144MHz

More on the FDM-Duo generally at http://www.g4jnt.com/FDM-DUO_Notes.htm



On Fri, 25 Jun 2021 at 15:03, Paul Andrews <pandrews@...> wrote:
I plan to use my FDM-DUO at 70 MHz as an IF for a transverter.

In Europe will the FDM-DUO operate in the 70 MHz band?  Or is 50 MHz the hardware limit?

73 - Paul - W2HRO




On Fri, Jun 25, 2021 at 3:18 AM Tony EI8JK <ei8jk@...> wrote:
Hi Pierre
Yes the 0dB output works on all frequencies and is modulated by whatever mode you have selected. Very useful for connecting a transverter.
Tony, EI8JK

On 25/06/2021 04:26, Pierre FK8IH wrote:
Page 9 of user manual : 3 - RF Output Connector SMA 50 Ohm connector. 0dBm transmission signal.
Can I understand that a 0dBm transmission signal can always be taken from that SMA connector, even when the transceiver cannot transmit, for exemple when it is tuned out of a Ham Band?
73 - Pierre - FK8IH



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



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


Re: FDM-DUO rear panel

Andy G4JNT
 

It works at 70MHz Tx on the 0dBm output perfectly well.   On Rx  a) don't forget to switch out the LP filter, and b) you need to filter out the alias response at 50.88MHz
See  http://www.g4jnt.com/FDM-DUO_at_VHF.pdf   for more about using this radio at 70 and 144MHz

More on the FDM-Duo generally at http://www.g4jnt.com/FDM-DUO_Notes.htm



On Fri, 25 Jun 2021 at 15:03, Paul Andrews <pandrews@...> wrote:
I plan to use my FDM-DUO at 70 MHz as an IF for a transverter.

In Europe will the FDM-DUO operate in the 70 MHz band?  Or is 50 MHz the hardware limit?

73 - Paul - W2HRO




On Fri, Jun 25, 2021 at 3:18 AM Tony EI8JK <ei8jk@...> wrote:
Hi Pierre
Yes the 0dB output works on all frequencies and is modulated by whatever mode you have selected. Very useful for connecting a transverter.
Tony, EI8JK

On 25/06/2021 04:26, Pierre FK8IH wrote:
Page 9 of user manual : 3 - RF Output Connector SMA 50 Ohm connector. 0dBm transmission signal.
Can I understand that a 0dBm transmission signal can always be taken from that SMA connector, even when the transceiver cannot transmit, for exemple when it is tuned out of a Ham Band?
73 - Pierre - FK8IH



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


Re: FDM-DUO rear panel

Paul Andrews
 

I plan to use my FDM-DUO at 70 MHz as an IF for a transverter.

In Europe will the FDM-DUO operate in the 70 MHz band?  Or is 50 MHz the hardware limit?

73 - Paul - W2HRO




On Fri, Jun 25, 2021 at 3:18 AM Tony EI8JK <ei8jk@...> wrote:
Hi Pierre
Yes the 0dB output works on all frequencies and is modulated by whatever mode you have selected. Very useful for connecting a transverter.
Tony, EI8JK

On 25/06/2021 04:26, Pierre FK8IH wrote:
Page 9 of user manual : 3 - RF Output Connector SMA 50 Ohm connector. 0dBm transmission signal.
Can I understand that a 0dBm transmission signal can always be taken from that SMA connector, even when the transceiver cannot transmit, for exemple when it is tuned out of a Ham Band?
73 - Pierre - FK8IH



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


Re: FDM-DUO - 1 or 2 antenna connectors

Neil Smith G4DBN
 

Hi Pierre, when Antennas 1 is selected, the RX is connected to the TX/RX connector in receive mode. When Antennas 2 is selected, the RX is connected to the RX only connector in receive mode.

See the diagram in this message:

https://groups.io/g/EladSDR/message/17200

Neil G4DBN

On 6/25/21 4:38 AM, Pierre FK8IH wrote:

[Edited Message Follows]

Things are clear in my mind when in Menu 33 Antennas 1 antenna is chosen : the antenna is fed by the transmitter or it feeds the receiver.
But when 2 antennas are chosen, for exemple a wide band antenna for the receiver and a finely tuned antenna for the transmitter, what happens? Are both antennas connected in the same time to the transmitter and the receiver? Is the receiver still working when the transmitter is tranmitting or some part of the circuit has cut its electrical supply to mute it?
73 - Pierre - FK8IH


Re: FDM-DUO rear panel

Klaus Brosche, DK3QN
 

As Tony has already written, the 0 dBm output has no band limits.

However, you need to set menu 33 (TXOUT) accordingly to make the 0 dBm port active.

Menu 31 is "number of antennas used".

73, Klaus, DK3QN


Am 25.06.2021 um 05:26 schrieb Pierre FK8IH:

Page 9 of user manual : 3 - RF Output Connector SMA 50 Ohm connector. 0dBm transmission signal.
Can I understand that a 0dBm transmission signal can always be taken from that SMA connector, even when the transceiver cannot transmit, for exemple when it is tuned out of a Ham Band?
73 - Pierre - FK8IH



Re: FDM-DUO - 1 or 2 antenna connectors

GLENN NUTSEY
 

Hi,

I use a Wellbrook Loop exactly for this purpose with my Duo. I can then switch between the two antennas via the SW. 

ENJOY 


On 25 Jun 2021, at 08:25, Tony EI8JK <ei8jk@...> wrote:

 The receive antenna works the same as all other tranceivers with an RX antenna socket. The RX socket is as you would expect, that is it is not connected when you TX and never gets any transmitted RF output. So you can safely connect an amplified receive antenna  without any worries.
Tony, EI8JK.

On 25/06/2021 04:38, Pierre FK8IH wrote:
Things are clear in my mind when in Menu 33 Antennas 1 antenna is chosen : the antenna is fed by the transmitter or it feeds the receiver.
But when 2 antennas are chosen, for exemple a wide band antenna for the receiver and a finely tuned antenna for the transmitter, what happens? Are both antennas connected in the same time to the transmitter and the receiver? Does the receiver is still working when the transmitter is tranmitting or some part of the circuit has cut its electrical supply to mut it?
73 - Pierre - FK8IH


Re: FDM-DUO - 1 or 2 antenna connectors

Tony EI8JK
 

The receive antenna works the same as all other tranceivers with an RX antenna socket. The RX socket is as you would expect, that is it is not connected when you TX and never gets any transmitted RF output. So you can safely connect an amplified receive antenna  without any worries.
Tony, EI8JK.

On 25/06/2021 04:38, Pierre FK8IH wrote:
Things are clear in my mind when in Menu 33 Antennas 1 antenna is chosen : the antenna is fed by the transmitter or it feeds the receiver.
But when 2 antennas are chosen, for exemple a wide band antenna for the receiver and a finely tuned antenna for the transmitter, what happens? Are both antennas connected in the same time to the transmitter and the receiver? Does the receiver is still working when the transmitter is tranmitting or some part of the circuit has cut its electrical supply to mut it?
73 - Pierre - FK8IH


Re: FDM-DUO rear panel

Tony EI8JK
 

Hi Pierre
Yes the 0dB output works on all frequencies and is modulated by whatever mode you have selected. Very useful for connecting a transverter.
Tony, EI8JK

On 25/06/2021 04:26, Pierre FK8IH wrote:
Page 9 of user manual : 3 - RF Output Connector SMA 50 Ohm connector. 0dBm transmission signal.
Can I understand that a 0dBm transmission signal can always be taken from that SMA connector, even when the transceiver cannot transmit, for exemple when it is tuned out of a Ham Band?
73 - Pierre - FK8IH


FDM-DUO - 1 or 2 antenna connectors

Pierre FK8IH <jb.gallauziaux@...>
 
Edited

Things are clear in my mind when in Menu 33 Antennas 1 antenna is chosen : the antenna is fed by the transmitter or it feeds the receiver.
But when 2 antennas are chosen, for exemple a wide band antenna for the receiver and a finely tuned antenna for the transmitter, what happens? Are both antennas connected in the same time to the transmitter and the receiver? Is the receiver still working when the transmitter is tranmitting or some part of the circuit has cut its electrical supply to mute it?
73 - Pierre - FK8IH


FDM-DUO rear panel

Pierre FK8IH <jb.gallauziaux@...>
 

Page 9 of user manual : 3 - RF Output Connector SMA 50 Ohm connector. 0dBm transmission signal.
Can I understand that a 0dBm transmission signal can always be taken from that SMA connector, even when the transceiver cannot transmit, for exemple when it is tuned out of a Ham Band?
73 - Pierre - FK8IH


FDM-S2 and Omnirig

AA3SS . . . Steve <aa3ssradio@...>
 

Is there any way to make the Elad software and omnirig track my external radio when I have more than one receiver open. For example when I switch to receiver 2 or 3 can it control the external radio and track the frequency


Re: 2 channel operation

Vianney Colombat
 


Hello,

with you will have :
    - first channel at 192kHz on the SW2 and stand alone demodulation on the DUO,
    - second channel at 192KHz on the SW2 only.
-> Mixed operations.

with you will have :
    - first channel at 384kHz on the SW2 only,
    - second channel at 384KHz on the SW2 only.
-> Full remote operations. The stand alone demodulation of the DUO supports only 192kHz span.

NB : menu 10 FILTER BYPASS of the DUO could be important when using two channels, it allows to bypass the internal preselection filters of the DUO which state depends on the DUO tuning frequency (LO of the SW2 first channel).

Vianney


Il 07/06/2021 16:15, MM6IXE via groups.io ha scritto:

[Edited Message Follows]

ive a few questions regarding this, as i have tried and tried to the best of my knowledge, but this is above me at the moment.

i am on the advanced config tab, i see 2 choices for 2 channel, 

1. stand alone and 192,,mixed ops, use rig and software available on channel 2
2 remote and 300 odd, bigger view and software for 1 and 2

my understanding of this is, if i choose option  1. 

  i will have channel one operation on the rig Only, which meand all settings on the Duo rig are applicable, and no settings on the sw2 channel 1 software will be applicable ,,,,and channel 2 remote through sw2 software so mixed operations,,,,is this correct?

if i choose option 2

i will have full remote on channel 1 and 2 with a bigger rx bandwidth to view, and cannot work wsjtx on channel 2 while working ssb cw on channel 1,,,,as all will be using virtual serial and virtual audio.


can i work wsjtx on  channel 1,  while using ssb or cw on  channel 2, or will the tx from either disable the other channel temporarily, i think i can only work 1 tx at a time!,,but multiple receive

please remember although i have owned my duos for a good while i am very limited in sdr and pc applications,,,,,but i do want to learn,,,indefinately

can anyone help

if my thinking of the stand alone and remote are wrong,,,can u elighten me please as to what this means

regards


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.


2 channel operation

 
Edited

ive a few questions regarding this, as i have tried and tried to the best of my knowledge, but this is above me at the moment.

i am on the advanced config tab, i see 2 choices for 2 channel, 

1. stand alone and 192,,mixed ops, use rig and software available on channel 2
2 remote and 300 odd, bigger view and software for 1 and 2

my understanding of this is, if i choose option  1. 

  i will have channel one operation on the rig Only, which meand all settings on the Duo rig are applicable, and no settings on the sw2 channel 1 software will be applicable ,,,,and channel 2 remote through sw2 software so mixed operations,,,,is this correct?

if i choose option 2

i will have full remote on channel 1 and 2 with a bigger rx bandwidth to view, and cannot work wsjtx on channel 2 while working ssb cw on channel 1,,,,as all will be using virtual serial and virtual audio.


can i work wsjtx on  channel 1,  while using ssb or cw on  channel 2, or will the tx from either disable the other channel temporarily, i think i can only work 1 tx at a time!,,but multiple receive

please remember although i have owned my duos for a good while i am very limited in sdr and pc applications,,,,,but i do want to learn,,,indefinately

can anyone help

if my thinking of the stand alone and remote are wrong,,,can u elighten me please as to what this means

regards


Rotary Encoder Bourns PEC11R-4015F-S0018 for sell

Fenu
 
Edited

Hi,

I have for sell 2 pieces Rotary Encoder Bourns PEC11R-4015F-S0018. No detent.
This Encoder you can use for the ELAD DUO / DUOr Tuning Knob Encoder.

Price: 6€ per unit. Shipping in a normal envelope is extra.
If you have interest mail to: fenu@...

Regards

Fernando


Re: Periodic FDM-S3 Downconverter Whine

Paul NN4F
 

When I spoke with franco last week, he hoped to get mine to me this coming week and to a EU tester, sw2 is being updated with support and then production should be started within a few weeks, we had major changes to the Downconverter design, as performance above 800mhz was not to Franco’s standards, now all is good and it’s supposed to be performing great, I’ll let you know as soon as I get one, inc a video of installation 

Paul EladUSA 

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


On Jun 6, 2021, at 12:52, Pete <p.briggs@...> wrote:

Are there any updates on the availability of the S3 downconverter?

Pete


Re: can anyone verify the Elad Application Notes AN 006 is functional as written

 

hi jeroen 

ive been at it a few times now over the past couple years.

im not giving up yet I’m stubborn😂

thanx for reply

anyone else any luck with 2 channel ops

maybe digital on one channel and ssb on other

maybe im over thinking the situation and trying to achieve the impossible, when what I really need is another rig and antenna

regards


Re: can anyone verify the Elad Application Notes AN 006 is functional as written

PF1JM
 

Cannot get it to work as described.
I also use VSPE 64 bit and VB-Audio.

Gave up on it....

Jeroen PF1JM


Periodic FDM-S3 Downconverter Whine

Pete
 

Are there any updates on the availability of the S3 downconverter?

Pete


Re: Vb Virtual cable A and B

phoekzema Hoekzema
 

Hi, Peter Wa7MOX here.      I am not set up quite the same here but I can use FLDIGI and WSJT-X at the same time.  I am using WSJT-X as a stand alone on RX1 and VRX2 has FLDigi.  O am not using the VSPE, I have had better luck with COM(0)COM.  I am Using the VBCable (cable A, free Version) for the audio on VRRX2 FLdigi. 

 

When using the WSJT=X as a stand alone, (Single RX) you do not need to run FDM-SW2.  But to get the additional receivers for other operations, I am running it.

 

Good Luck.

Peter WA7MOX

 

Sent from Mail for Windows 10

 

From: weirdglezga via groups.io
Sent: Saturday, June 5, 2021 3:32 PM
To: EladSDR@groups.io
Subject: [EladSDR] Vb Virtual cable A and B

 

hi

does anyone use vb virtual audio with the duo 

cable A and B,I’ve purchased and I’m thinking maybe I purchased wrong,, and also an unregistered version of VSPE on 64bit average

i cannot get it working after following the Elad application notes, 
really struggling with it

any ideas how to sort this, I’d like to use remote 2 channel and a couple digital modes and fone

thanx

 

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