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Last week, I have finished the PCB design and now I’m waiting for the PCB samples to arrive.
I believe after Xmas will have a 30W working prototype (which goes to camclone).
Then I will make two more, one for Leif (0.5W) and one for yorkie98 (30W).They will have three audio ports:
- Port A: Digital electrical interface, XLR female connector, balanced 110 Ohm, transformer isolated.
- Port B: Digital optical interface, F05 connector female (Toshlink – 5 mm).
- Port C: Analog electrical interface, 2 x XLR female connectors, balanced 600 Ohm.
Audio operational modes:
- MONO, with audio source selectable from:
- Port A (Digital L/R mixing, in AES-EBU up to 24bit 96kHz format)
- Port B (Digital L/R mixing, in AES-EBU up to 24bit 96kHz format)
- Port C (Analog Left / Right mixing, sampled at 24bit 96kHz)
In this mode, the internal DSP stereo coder is disabled.
. - STEREO, with audio source selectable from:
- Port A (Digital L/R, in AES-EBU up to 24bit 96kHz format)
- Port B (Digital L/R, in AES-EBU up to 24bit 96kHz format)
- Port C (Analog Left / Right, sampled at 24bit 96kHz)
In this mode, the internal DSP stereo coder is enabled.
. - EXT BASEBAND, with audio source selectable from:
- Port A (Digital L/R, in AES-EBU up to 24bit 192kHz format) <— D-MPX
- Port B (Digital L/R, in AES-EBU up to 24bit 192kHz format) <— D-MPX
- Port C (Analog Left-jack only, sampled at 24bit 192kHz) <— A-MPX
In this mode, the internal DSP stereo coder is disabled.
NOTES:
Port A and Port B cannot be used simultaneously.
Port C can be triggered by external event to replace Port A or B input.Let’s see if Santa Claus exists… 😆
This is sounding more and more tasty all the time, you have obviously been working very hard on this and you are making what sounds like could be a world class product.
One question, will the analog mpx input be straight DC?
Keep up the good work and looking forward to the new year more than ever 😀
This all sounds very interesting 😮
What are the possibilities to buy a transmitter like this?
Would love to be on the beta testing team 😀
@yorkie98:
No, Port C is AC-coupled.@Dj Buik:
After ETSI compliance test (around February I guess), can be released to relevant market.
Depending on the market interest, will go for FCC certification too.Sigmacom,
Thanks for the reply.
With all respect, but I do not need a FCC or ETSI certified transmitter.
I want to use this transmitter for a pirate station in the Netherlands.
I think many pirate stations in the Netherlands will be interested.Can you tell me what the expected price will be in Euro’s or US Dollars
for a 1 to 10 W transmitter ?Thanks!
[quote author=”sigmacom”] @yorkie98:
No, Port C is AC-coupled.@Dj Buik:
After ETSI compliance test (around February I guess), can be released to relevant market.
Depending on the market interest, will go for FCC certification too.[/quote]Will ETSI compliance mean it also gets CE safety certification for Eurozone and UK use?
@Dj Buik
Legal or pirate, equally should comply with basic requirements like spurs, harmonics, etc.
Being pirate is one problem. Why causing bigger problems – like interference to aeronautical frequencies? 🙂
Anyway, it will be released as 30W exciter (although can give up to 80W, but don’t tell anyone… 😉 )
I have not decide it’s final price yet.@Leif
Beer? Cheers! 😀@yorkie98
It’s a separate process, it has to pass this too.Hello sigmacom……
I’ m interested about your tx board….
I need only tx exciter with digital mpx input…. (spdif)…. is it possible…??????????Thank you….
Rocco….
@rocco123456
This exciter recognizes S/P-DIF format, and works via Port C (optical digital interface).
Can’t guarantee S/P-DIF via Port A, due to different termination.
I haven’t tested this, but I believe it should work too.Happy new year to everyone!
Just an update:
There was a little issue with PCBs, but hopefully will have them in the next 5-7 w/days.
Being impatient, I printed myself one unit of the new mainboard, to see actual component layout.
I thought to share with you how it looks:
From top-left:
Port A (XLR), Port B (Toslink), RS-232, Port C (XLR x 2).This mainboard produces 50mW and drives the RF filter / amplifier section.
There is also a control panel (LCD display and rotary switch), for UI.Will keep you informed…
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