[Skimmertalk] T14 Transformers

[Bob Wilson, N6TV]

Thanks Martin.  The pre-amplifier looks interesting.  What is the gain?
What is the voltage requirement?  Does it include a power supply?  I assume
it doesn't have the 14:1 transformer built-in, though it would be nice if
it did.

N4ZR managed to homebrew a transformer board using that transformer
component, but couldn't find a male right angle PC mount SMA connector like
the one that the Red Pitaya folks use.

I'm planning to order a third batch of 14:1 transformers from the Red
Pitaya company, which you will be able to order from me using
http://www.kkn.net/~n6tv/XFMR once they're back in stock.  In the mean
time, as mentioned, please email me directly (off list) if you want to be
on the waiting list for one or more.

73,
Bob, N6TV

On Sat, Dec 9, 2017 at 3:43 PM, Martin Rath <martin.rath at gmail.com> wrote:

> Hi,
>
> I found that the T14 transformers are available in Germany from Box73 :
> http://www.box73.de/product_info.php?products_id=1552
>
> At 6.20 EUR there are not cheap especially considering the cost of
> shipping (flat rate of 4,90 EUR in Germany / 6,90 EUR WW) but even
> considering this I guess one could easily build there own input 14:1
> transformer PCB for less than 15 USD a piece.
>
> They also have a broadband 0-60 MHz LNA designed by DC2PD for the Red
> Pitaya ( http://www.box73.de/product_info.php?products_id=3737 ). The LNA
> was described in the Funakamteur 12/2016 : I'm a subscriber so I could most
> probably scan it for you if there is any interest. It will however be in
> German :-)
>
> 73's Martin 9V1RM
>
> On Wed, Dec 6, 2017 at 3:52 AM, Bob Wilson, N6TV <n6tv at arrl.net> wrote:
>
>> K5TR discovered that DigiKey currently has a better price than Mouser on
>> the Red Pitaya STEMlab 125-14 starter kit ($306.79) and acrylic case
>> ($22.73):
>>
>> https://www.digikey.com/product-detail/en/trenz-electronic-
>> gmbh/27761/1686-1034-ND/6579245
>>
>> https://www.digikey.com/product-detail/en/trenz-electronic-
>> gmbh/27773/1686-1044-ND/6579255
>>
>> More links:
>>
>> https://www.digikey.com/products/en?keywords=red%20pitaya
>>
>> I'm currently sold-out of the 14:1 transformers (
>> http://www.kkn.net/~n6tv/XFMR).
>>
>> But I can order another batch from the company if there is sufficient
>> demand.  Please send me a direct email if you want to be on the waiting
>> list for one or more 14:1 transformers.
>>
>> 73,
>> Bob, N6TV
>
>