Hi,
here is a conversion table.
Detlev
Posts by DC7KG
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Hi Andreas,
do you use a 20 W amplifier or a 43 dBm amplifier?
Once I've used a 88 dBm amplifier on 1 000 kHz.
Detlev
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Hi Thomas,
I think we use mixed units of measurement: dB for amplification and attenuation and W for the power.
Detlev
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Hi,
you can use a directional coupler (eBay about € 15.-) and a crystal detector:
N-Typ HF-Koaxial-Richtkoppler, Weiblich, 200W, 800-2500 MHz, 5 DB ~ 40 DB, 50Ohm
Detlev
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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
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Hi Matthias,
my 20 W amplifier from PE1CMO is full duplex.
Detlev
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Hi there,
I miss the 1 W amplifier from AD CN0417 and the 20 W amplifier from PE1CMO.
73 Detlev
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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
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I suppose dxpatrol adjusts the capacitor for best swr
73 Detlev DC7KG
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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
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Hi,
that isn't a problem of the pigtail, it is a problem of the solder connection of two cables. even a N-type right-angled plug-jack adaptor isn't ideal:
Detlev
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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
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Hi,
you have to use connectors on your Ultraflex 7 cable, you can't solder pigtails together.
Detlev
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Which type of connector do you use on the Ultraflex 7? There are SMA connectors for that cable.
Detlev
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I don't understand the pigtail. You should use a N-connector on your ultraflex 7 cable and a N-connector at the helix.
Detlev
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Hi,
the Helix has the right polarization. You should use a N-connector socket and an approriate cable.
Detlev
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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
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I 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
