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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Satellite Meters and Installation Equipment
Using the "138MHz-4.4GHz USB SMA Source/Signal Generator/Simple Spectrum Analyzer" for TV/CATV/SAT
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<blockquote data-quote="vma" data-source="post: 1070798" data-attributes="member: 256592"><p>Don't rush any purchase - go to my blog and download the user guide. It explains everything (I think).</p><p></p><p>There are differences between the SMA, NWT and D6 models.</p><p></p><p>The SMA is the cheapest option to get reliable results.</p><p>The NWT is the most expensive one, because it can do full duplex (TX and RX simultaenously). This is important to measure filters and antennas.</p><p>The D6 is similar to the NWT but is the cheapest of the three models. However, it has the worst results in sensitivity and noise floor. There are modifications you can do, but then you get wrong measurements (but better sensitivity).</p><p></p><p>All of this is documented in many of my posts in my blog.</p><p></p><p>The second item you list (USB RF generator) is NOT the correct device.</p><p></p><p>A DC Blocker is a cheap F-connector type thing you can purchase in any Sat-Shop for 1-2 Euros. It basically does not allow DC to pass. Not sure if there is a diode or capacitor inside.</p><p></p><p>Do a Google search for "dc-block sat" and click on IMAGES. You will see what I mean.</p><p></p><p>Regards,</p><p>Vitor</p></blockquote><p></p>
[QUOTE="vma, post: 1070798, member: 256592"] Don't rush any purchase - go to my blog and download the user guide. It explains everything (I think). There are differences between the SMA, NWT and D6 models. The SMA is the cheapest option to get reliable results. The NWT is the most expensive one, because it can do full duplex (TX and RX simultaenously). This is important to measure filters and antennas. The D6 is similar to the NWT but is the cheapest of the three models. However, it has the worst results in sensitivity and noise floor. There are modifications you can do, but then you get wrong measurements (but better sensitivity). All of this is documented in many of my posts in my blog. The second item you list (USB RF generator) is NOT the correct device. A DC Blocker is a cheap F-connector type thing you can purchase in any Sat-Shop for 1-2 Euros. It basically does not allow DC to pass. Not sure if there is a diode or capacitor inside. Do a Google search for "dc-block sat" and click on IMAGES. You will see what I mean. Regards, Vitor [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Satellite Meters and Installation Equipment
Using the "138MHz-4.4GHz USB SMA Source/Signal Generator/Simple Spectrum Analyzer" for TV/CATV/SAT
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