[hpsdr] new 100W AMP from Germany on eBay

[Isaac Weksler]

Am I wrong, presuming that the 140W amp based on CC board is similar to *
PennyWhistle* and will get all the controls from *Mercury/Penelope* when
used with the *Alex* module, soon to be available from TARP?

I am not sure price wise, though, since I do not know what the Alex module
price would be. Maybe somebody could advise? Anyway, it seems to me
advisable to use a simple amp like PennyWhistle in combination with Alex, as
Alex can be used as control and filtering module both for the receiver and
the transmitter.

Besides, is the Gerd's 100W amp available assembled?

Ike 4Z1AO
*


Mark J Dulcey* mark at buttery.org
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*Sun Feb 7 12:49:28 PST 2010*

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------------------------------

On 2/7/2010 3:36 PM, Chris Smith wrote:
>* ***** High Performance Software Defined Radio Discussion List *****
*>*
*>* Erm ... It seems to me that this is rather expensive compared to
the 140W kit from Communications Concepts for $96 without heatsink
(extra $23). Admittedly that doesn't cover 6M&  requires 5-10w input
for full output but a lot less money. Even taking into account the
cost of Pennywhistle to raise the 0.5 w to the required input level
it's still expensive and the shipping at $115 is ridiculous. Not for
me - I'm retired and saving my pennies for Alex.
*
A bit of apples and oranges. Besides working with less power input, the
German kit includes all the low pass filtering for multiple bands, T/R
switching, and automatic band switching that is controllable by SDR

software. The Communications Concepts amplifier does not include any of
those things.

I'm not sure where you got the $115 shipping number from; the eBay
listing shows free shipping to the US. I believe that number actually

reflects VAT, not shipping costs; the listing says that the shipping to
Europe price includes VAT. $115 would be about 20.5% tax based on the
US$561.94 price that eBay shows me.

This is not an inexpensive kit, but the design certainly looks clean,

the components look adequate for the intended power level, and it should
integrate well with the HPSDR design to make a capable 100W transceiver.
I don't think it's unreasonably priced for what you get, but individuals

will have to make their own judgments of value.
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