Hi all,
I'm very surprised how today, someone haven't imagine to try some new propulsion for a microsat, to bring it in a MEO orbit or experimenting ACE orbit. There are too much "toys" in orbit (LEO), and the community needs a real satellites, to experiment new way of communication. Do you agree ?
https://www.amazon.it/gp/produ…tle_o02_s00?ie=UTF8&psc=1
I bought one of value 40 dB and one 30...you can choose a suitable combination of attenuators to reach wanted results. To DRIVE a BU500 with a TS2000 you can choose a 40 dB. Attenuator. But to increase power > 5 W you must disable the useful "Transaverter ON" function to see the exact frequency.
Regards.
Display MoreHello,
We are preparing a new MiniTiounerPro_V2. it could be able to receive 2 channels at same time and has many others features ( 2xLNB chips...)
It will be available to every one as it will be sold by REF but also by a private company.
Jean-Pierre F6DZP
Very glad about this news JP !
Thank You.
Very good Job !
Display MoreAlessio, tnx for report.
I think and hope its a sofware error on pc site.
I´m sure thats a software bug.
If I try FEC 5/6 or higher then results a correct signal, but only for a few seconds, then software crashes.
This early Version
https://www.datv-express.com/u…ess_transmitter1.25p4.zip
works with FEC 2/3 and higher, but also crashes after seconds
73 Robert
Thank you for the suggestion Robert.
73 Alessio
Display MoreMy results:
DVB-S2
Output power: 2400 MHz:
2000 k/s -7 dBm signal i.O
1000 k/s -7 dBm signal i.O
333 k/s -11 dBm signal i.O
125 k/s - 60 dBm no usable signal
Output power: 1280 MHz:
2000 k/s -4 dBm signal i.O
1000 k/s -4 dBm signal i.O
333 k/s -10 dBm signal i.O
125 k/s - 60 dBm no usable signal
73 Robert
I haven't a instrument to measure, but the result confirm my observation. Who has ADALM cannot transmit at very lower rates...
TU Robert 
Okay, I'm able to tx at 333 K/s, tested 125 K/s DATV-Express with Adalm doesn't trasnmit. But I've the suspect about parameters are nor proprely settled....
Searched on the web cannot find information about parameters...
Tx at 2400.Mhz
ik4idy Alessio it is only a challange never a drama..
I want do a test....
Display MoreTried anybody the ADALM-PLUTO DATV with bitrates lower than 1000 kbps ?
Tests show that the output power drops dramatically at a reduced bit rate.
At 125 kbps, it does not send at all ...
Any Idea?
73s de Robert
If true it's a drama...
In my opinion : Perfect. Noise floor at 6 S/N now an beacon peaking s 9 :
ik4idy Yes, that is known. There are + and - 20 kHz noise skirts , measured/received by many. And .. from what I have been told, a fix is underway.
Great Job !
The beacon increase dramatically now receiving 9+15 !!! It has two small hills at his side..
My measures based on sdr console, the value of noise decrease is around 4 dB...
Good !
ebay abt 99-120€
So cheap.. good
an update:
https://www.facebook.com/octag…ny/posts/2259534837401981
it seems Octagon came out with a new firmware for their SF8008 capable os receiving SR down to 100!!!
good news. We are waiting for cost.
Yes you can decode 2 to 1 M/sym but with speed of 125 and 333 K/sym is useless.
73
Hat anyone experience with ADALM-Pluto as Receiver or as DATV-Transmitter ?
73, Martin DL9SAD
I've been done the same test on ADALM-PLUTO with DATV ESPRESS SOFTWARE, as Heiner DD0KP (thank's for your suggestion !). Local tests was good for me on : 435, 1240, and 2400. In all cases a was able to decode my strong signal (local), with Minitioune Software (F6DZP). For my curiosity I've been done a test at 144 MHz, but in this case without success. I cannot understood if the reason was difficulties of ADALM to work on 144 or is SW or Minitouner express. It's very interesting platform to use some tipology of emission. Now I'm waiting components to reach result on QO-100 (Hair filters and amplifier dor DATV). First experience wasn't good with a surplus amplifier due to some errors for my inexperiaqnce on microwaves. We have a lot of collegues are well equipped to have good results, it isn't my actual situation.
Best 73 and good luck.
Yes you are right.Sometimes life is crasy.. I am running here FT-790 with 40db attenuator to BU-500 doing 300mW output on NB. will have PA by this week and then I have arround 4W out.
4 W on NB is a broacasting 
D: I'm sure your signal is good and above the beacon...
ik4idy Why do you connect the Pluto to the BU-500?? The Pluto can do that QRGs himself.
Yes, may be strange. My intention was to drive all at 144 MHz, for NB and WB. My test of saturday consist to try NB with Pluto, connected to BU500 ... total failure.
Too large device BU500 and too much spurious generation by ADALM.
No problem. I will restart with another way. When I will have availability of the attenuator, I will try with my ts 2000 to drive narrow band on BU500. For the WB as described, I will filter the input from adalm, and I will send 2400 directly to amplifier...
This drive me crazy, inexperience (not always ignorance), play bad.
73
Works fine ..
Saturday i have been done the same test, successfully. I tried also 2400 MHz TX result was the same, good picture obtained. Unfortunately connecting ADALM_PLUTO to BU500 converter, I discovered some issues. The unfilitered signal from ADALM causes burning my amplifier. The accident is caused without connecting any signal in TX. This meaning that when ADALM does'n transmit, has anyway a "grass" of RF, that is so dangerous if you connect ADALM to other devices without filtering. The solution may be filter the band outside 2400 Mhz, and connect to a amplifier after a good filtering. But this do not guarantee that in the 10 MHz spectrum you have a very clean emission....
