Don't forget, Analog Devices produces also the Pluto.
PE1CMO's price list is in the brochure, but no address! Very strange. I had no problems getting my 20 W amplifier from René.
Detlev
Don't forget, Analog Devices produces also the Pluto.
PE1CMO's price list is in the brochure, but no address! Very strange. I had no problems getting my 20 W amplifier from René.
Detlev
Hi Matthias,
my 20 W amplifier from PE1CMO is full duplex.
Detlev
Hi there,
I miss the 1 W amplifier from AD CN0417 and the 20 W amplifier from PE1CMO.
73 Detlev
Danke Matthias,
da ich noch analog sende, werde ich erst einmal die PTT-Lösung wählen.
Viele Grüße,
Detlev
Wie realisiere ich denn eine Rückhördämpfung, um mich selbst leiser zu hören als die Gegenstelle?
Detlev
Hi,
I don't know if SATSAGEN is a reliable analyzer. If you switch 10 dB in between, all lines must decrease by 10 dB.
I have to finish my clock generator and measure with a HP Spectrum Analyzer.
Detlev
Where can I mount the LNB?
Detlev
I suppose dxpatrol adjusts the capacitor for best swr
73 Detlev DC7KG
Hi,
your order is ok. Wilhelm is right, the flap is a capacitor and must not touch the helix. Try to bend it back to the original position.
Good luck!
Detlev
Hi,
2.4 GHz is not DC, you can't solder two cables together!!!!
You have to use the appropriate connectors for your Ultraflex 7 cable, SMA and N for the Helix.
73 Detlev, DC7KG
Hi,
you have to use connectors on your Ultraflex 7 cable, you can't solder pigtails together.
Detlev
Which type of connector do you use on the Ultraflex 7? There are SMA connectors for that cable.
Detlev
Hi,
the Helix has the right polarization. You should use a N-connector socket and an approriate cable.
Detlev
Hi,
that is the theoretical value, don't forget the additional noise of the multiplier/divider.
Nevertheless AD recommends 80 MHz for the Pluto, you have 4 different choises: 40 MHz x 2, 80 MHz x 1, 160 MHz :2, 320 MHz :4.
73 Detlev
Display MoreI do not know the internals of the ADI-IC AD9361 and thus I cannot judge how much of a difference with respect to the phase noise a reference clock of 40 MHz versus 50 MHz creates. Did you evaluate/measure this ?
Regards
Matthias
Hi Matthias,
it is not the difference between 40 and 50 MHz, it is the difference between 80 (40 x 2) and 50 Mhz.
Because I have no 50 MHz clock I can't measure it, but I believe AD knows the facts.
73 Detlev
Hi,
the AD document UG-570 says, that the scaled frequency should be as close to 80 MHz as possible, i.e. 40 MHz x 2. But you can't take 50 MHz x 1.6!
Detlev
REFERENCE CLOCK SETUP AND OPERATION
If the DCXO is not used, an external reference clock needs to be ac-coupled to XTALN (Pin M12). XTALP (Pin M11) is not connected (leave floating). The clock frequency must be between 5 MHz and 320 MHz, and can be scaled by 1×, ½×, ¼× and 2× using BBPLL, Rx and Tx reference dividers. The valid frequency range for the RFPLL phase detectors is 10 MHz to 80 MHz, and the scaled frequency of the reference clock must be within this range. For optimum phase noise it is recommended to operate the scaled clock as close to 80 MHz as possible. The selection between DCXO and external reference clock is made in the ad9361_init function.
Has anybody used this TCXO for 10 MHZ and 40 MHZ ?
Hello,
here are the spectra with the internal clock, the OSC101 (40MHz) and an RTL 203004 (TCXO 40 MHz).
73 Detlev, DC7KG