In a message on Wednesday 08-23-16 Richard Menedetter said to Jimmy
Anderson:

I really do not get why Holger reacted the way he did, maybe he can clarify. (bad day?)

Simple my friend. Several years ago, I was accused of advertising in the
'HAM' echo, when I listed the User/Service manuals I had for ham radio equipment, transceivers, receivers, transmitters etc., from american manufacturers.


Regards,

Holger

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Hi Holger!

24 Aug 2016 09:27, from Holger Granholm -> Richard Menedetter:

I really do not get why Holger reacted the way he did, maybe he
can clarify. (bad day?)

Simple my friend. Several years ago, I was accused of advertising in
the 'HAM' echo, when I listed the User/Service manuals I had for ham
radio equipment, transceivers, receivers, transmitters etc., from
american manufacturers.

So that is why you yourself give on the pain now?

Anyway ... the information was handed out by me, because I think it is a great product and can be helpful to everybody that is interested in SDR.

It is on its way to me, and I can report back here about my experience with it.

For example that one already has direct sampling support built in.
For the generic sticks you need to make a HW modification to be able to use that mode to grab lower than 24 MHz frequencies.

CU, Ricsi

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In a message on Friday 08-25-16 Richard Menedetter said to Holger
Granholm:

It is on its way to me, and I can report back here about my
experience with it.

For the generic sticks you need to make a HW modification to be able
to use that mode to grab lower than 24 MHz frequencies.

Or just build a simple downconverter. In that case you must of course be
able to know how to use a soldering iron.


Regards,

Holger

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Hi Holger!

26 Aug 2016 12:13, from Holger Granholm -> Richard Menedetter:

For the generic sticks you need to make a HW modification to be
able to use that mode to grab lower than 24 MHz frequencies.

Or just build a simple downconverter. In that case you must of course
be able to know how to use a soldering iron.

Yes ... indeed ...
You can make or buy an upconverter.
And that is actually a better alternative. (I do own a ham-it-up)

But for a quick check using direct sampling is a very quick and easy way.
Take a look how people changed their rtl-sdr sticks to direct sampling. Currently it is ONLY operative in direct sampling method when you modified the stick.

With the new one you can use both modes without hardware change.
I think this is a good thing, do you disagree Holger?

CU, Ricsi

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Richard Menedetter wrote to Holger Granholm <=-

Yes ... indeed ...
You can make or buy an upconverter.
And that is actually a better alternative. (I do own a ham-it-up)

The up comverter is said to offer better performance, though I don't use RTL-SDRs below 24 MHz myself

With the new one you can use both modes without hardware change.
I think this is a good thing, do you disagree Holger?

I agree, it's a good thing, offers some flexibility.


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In a message on Monday 08-28-16 Richard Menedetter said to Holger
Granholm:

Hello Richard,

Or just build a simple downconverter. In that case you must of course
be able to know how to use a soldering iron.

You can make or buy an upconverter.

WHY would I make/buy an upconverter for a stick that already covers
25 - 1300 MHz.

A downconverter is however needed if you want listen to frequencies
below 25 MHz.

I think this is a good thing, do you disagree Holger?

See above.


Regards,

Holger

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--- PCBoard (R) v15.22 (OS/2) 2
* Origin: Coming to you from the Sunny Aland Islands. (2:20/228)

Hi Holger!

29 Aug 2016 09:25, from Holger Granholm -> Richard Menedetter:

Or just build a simple downconverter. In that case you must of
course be able to know how to use a soldering iron.

You can make or buy an upconverter.

WHY would I make/buy an upconverter for a stick that already covers
25 - 1300 MHz.

See http://bit.ly/2ctd5lz
An Upconverter is needed to convert a lower frequency signal to a higher frequency signal.

See also the descritpion for the Ham-it-up upconverter: http://www.nooelec.com/store/ham-it-up.html

A downconverter is however needed if you want listen to frequencies
below 25 MHz.

It seems that the convention is the other way around.
If you convert a lower frequency signal to a higher frequency signal, that is called upconversion.

Like for example converting 7 MHz to 132 MHz (like in the case of the Ham it up
upconverter)

I think this is a good thing, do you disagree Holger?

See above.

Thank you for your invaluable input, as usual!

CU, Ricsi

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