Posts by PY1SAN

Quote from DC7KG

Hi Sandro,

I've just got the data sheet of the RTL203004. It is a TCXO with 3.3 V supply voltage.

73, Detlev

Very interesting.

73 !

Sandro RIbeiro

PY1SAN

Quote from DC7KG

Hi Sandro,

I suppose you can't reach the recommended phase noise values with a clock multiplier. I am waiting for a 40 MHz OCXO (KVG RTL203004) from eBay.

73 Detlev, DC7KG

Hi @DC7KG  Detlev.

I haven't experienced with 40 MHz OCXO. I use the ENE3311B here. 10 MHZ output. I hope very successful for you.

73 !

PY1SAN

Quote from DC7KG

Hi,

today I've used the OSC101 as external clock. It is completely useless. I transmitted on 2.4 GHz with the internal clock (image left) and with the OSC 101 as external clock (image right).

73 Detlev

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Thanks @DC7KG  Detlev.

Very interesting.

73!

PY1SAN

Quote from SWL-Muhammad Irfan

Ok thank u ddius

What about this given pic ocxo ix this work . It printed from back side some kind of multiplication. And is any coding required in putty for external clk

Hi Muhammad.

This link below have some info about this module (use ICS512 or NB3N502):

Thread

External reference from ICS512 (PLL CLOCK MULTIPLIER)

Hello All,

FYI - some results of testing the formation of the 25 MHz reference signal for the LNB PLL and 40 MHz reference (for the VHF SDR ADALM Pluto) based on the ICS512 chip (PLL CLOCK MULTIPLIER) at http://www.ra3apw.ru/proekty/ics512_reference/. Please use Google translator.

The 10 MHz OCXO with phase noise -154 dBc / Hz @ 10 kHz acted as the main source of the reference frequency.

As a result: 25 and 40 MHz signals are formed, stability is good but the phase noise value (-99 dBc/Hz @ 10…

ra3apw

Apr 10th 2020

73.

PY1SAN

Sandro Ribeiro

Quote from VU3WTJ

I brought a prime focus dish (120cm diameter; photo attached) and a KU band LNB with four ports [Solid Dilos Ku-Band Universal Quad LNBF]. (Photo of LNB is attached). My grid location is NL06lt (India). Please guide me on following points:

1) How to focus or position the dish antenna?

2) How to adjust the skew of LNB?

3) Any instrument or method to measure proper azimuth, elevation and skew angle?

4) Any TV channel at my region can be taken as reference?

5) Which port of this LNB can be used for WB and NB?

6) How to know the IF frequency of my LNB? Which can be fed into SDR console for initial setup

Please help me on these. I think many newbie will get help from this doubts. 73

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1) https://eshail.batc.org.uk/point/.

2)https://eshail.batc.org.uk/point/.

3) I used one very cheap SDR. Sorry. 2019 methode: RE: Es'hail-2 beacon frequency (non-amateur)

4) I know only the TP WB & TP NB. Sorry. 2019 methode: Es'hail-2 beacon frequency (non-amateur)

5) I used only the voltage methode NB <18v>WB.

6) Generally is 9750 MHz.

Welcome the best TP amsat !

Quote from 2E0ILY

....set and a TX offset of 6089.5MHz set. Is this TX offset correct please?

The TX offset is 8089.5 MHz.

Quote from ON7CL

Hello,

Some time ago I did read a nice article from a pluto boxed for qo100, it was a German ham I don't remember his call and I can't find the article. Anyone knows where to find ?

I tried via search but nothing.

Thanks in advance.

Rudi / ON7CL

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Hi Rudi.

I use a aluminum box enclosure in my Adalm Pluto.

Link:

Adalm Pluto Mods

73

PY1SAN

Quote from PA3FYM

Feng showed me the inside of his LNB. It has an RDA3566 chip, which doesn't have a 'symmetrical oscillator' (aka kalitron), so 'balanced' feeding does not work. It works perfectly for the NXP chips like I revealed/published in 2019 (or so).

For the RDA-chips there is an 'input' and 'output' pin (where injected levels differ around +20 dB (relative to the input).

I tested this balanced method only this year. Here the chip is RT320M.

Have you changed the TCXO of your Pluto ?

Quote from s21at

what brand and model of band pass filter is required after the pluto sdr?

also is there any suggestion for bias-t?

any tested models for buck converters as I am afraid of high noise or is that something not concern?

Some SAW BPF:

73 ! PY1SAN

Tnx @SWL - markro92 !

Quote from DB2OS

Hi Bert,

I use Airspy R2 SDR, SSB SP-200 Preamp and ANjo Eggbeater.

It's only a very simple setup at the moment to run the SatNogs software, but it works very well to see what's going on in the 2m satellite band.

73s Peter

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The signals recorded on your station's SATNOGS are strong. Impressive for a simple Eggbeater. Very good signals.

Tnx Marcel !

Unfortunately here dont have fleamarket with SSPA! I thinks in the future is possible. I buy some things of others countries.

Great !

Quote from SP3OSJ

I recorded a movie how my TRV works !!!!

https://youtu.be/TXql9srj1gs

Video unavailable.

This video is private.

Quote from DD1US

Hello Wolfgang,

Thanks.

I have updated my description about the MHL21336 amplifier at www.dd1us.de

Kind regards

Matthias

http://www.dd1us.de

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Hi Matthias DD1US .

I made this amplifier using your schematic. I bought the module in september 2019 (Ebay) but i assembly this week. My module isnt counterfait. I supply with 28v in both pins and i have approximately 2 until 3 watts ( sorry, but i dont have how calibrate measurement equipment ).

73!

PY1SAN

GG77SN

Some info:

"These modules in turn utilise detectors such as the D8318 device from Analog Devices....

http://wiki.villagetelco.org/RF_Power_Meter ( RF_Power_Meter )

73 !

Quote from dl6dca

Hello together, hello Hans-Michael,

look also at https://dd0yr.de/Bilder/13cm-PA/13cmPowerPa.pdf .

73 Wilhelm

Great !

Quote from ik1hgi Tony

sorry I don't understand 000,000 frequency ???

Yes.

If I tune WB Beacon 742.600 mhz and restart dvb-s gui and start over, the screen will display 000.000, but I tune the last frequency (742.600). Why ? I dont know !