Tranciever Тюльпан-DSP

[HMAMATOR]

Taki jak w oryginalej dokumentacji na stronie http://www.cqham.ru/.

[UA6VAE]

Faced with a strange problem.
As I connect the DDS output to DDS(4) through NB3N3020 what I should use as DDS mux and Frequency factor?
I used 4 (DDS mux) and 1 (Freq factor) at this moment and heard very weak tone signal when test with Tone button and my scanner.
When i feed TRX with line in source i saw on FFT window actual signal pattern but heard nothing with scanner...

[SP3OSJ]

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[UA6VAE]

(09-03-2016 10:03)SP3OSJ napisał(a):  DDS -> X1 (Menu)
NB3N2030 -> X4 (Hartware)

Hi!
NB3N3020 soldered to X4 with 0 Ohm resistance.

You mean:
DDSmux -1
Freq factor -4
?
Anyway, not working. From what point i need to start diagnostic?

[SP3OSJ]

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[SP9KN]

A ja z chęcią kupię kompletnego DDS-a lub samą płyteczkę do DDS TRX Tulip.

[UA6VAE]

I am really frustrated about this SWR meter.
Why the ANT literally shorted to ground?

[SP3OSJ]

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[UA6VAE]

(12-03-2016 0:46)SP3OSJ napisał(a):  This is not a short circuit there is a transformer (inductance "L")!

Yes, it's inductance, but it have zero resistance and short all circuit (LPF, BPF) and TRX output/input directly to ground. Simply, if i'm apply test signal of 7Mhz from generator to ANT input, i see very weak signal on display, but if i'm disconnecting PA board and connect generator directly to TX input of TRX board, signal is very strong.
Maybe i have miss something...

Okay, one more thing i thought i shall mistake. Now i have shorted all inductance within LPF and BPF for 40m diapason (as i test on 40m), instead installing coils, it's just faster.
Is it critical? May be this is reason of signal loss?

[SP3OSJ]

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