[hpsdr] 50 Volt 300 watt PA from Russia with IMD3 >= 40 dB

Thu Nov 7 16:01:30 PST 2013

Hi Guys,
I sent Rod a personal email with diagrams attached, sending to the list 
it's held for the moderator because of size.

Here is the text portion.
----------------------------------
Hi Rod,
It uses J16 bits 17 - 20 to a CD4028 decoder chip on the BPF board.
In cuSDR you will see Hermes and Alex Auto selected. As the selections 
would be the same as with ALEX, I guess it's a clone of ALEX.
The INTERCONNECT diagram and the Settings diagram correlate, e.g ABCD == 
1234 == 160m.

1 39.85 - 64.4 MHz BC
2 23.2 - 39.85 MHz ABC
3 19.6 - 23.2 MHz D
4 16.2 - 19.6 MHz AD
5 12.1 - 16.2 MHz BD
6 8.7 - 12.1 MHz ABD
7 6.2 - 8.7 MHz, CD
8 4,665 - 6.2 MHz ACD
9 2.75 - 4,665 MHz BCD
10 1.70 - 2.75 MHz ABCD  C1 C19 C37 100 100 C2 2h220 C20 C38 220 100 220 
C3 2h220 C21 C39 0 2h220 C4 C22 C40 100 100 2h220 C5 C23 C41 100 100 
2h220 C6 C24 C42 100 56 220 C7 C25 C43 100 56 220 C8 C26 C44 0 100 220 
C9 C27 C45 100 56 C10 220 C28 100 C46 56 220 C11 C29 C47 22 100 C12 220 
C30 100 C48 22 220 C13 C31 C49 100 22/22 100 +56 C32 C14 C50 22 100 C15 
220 C33 100 C51 22 C16 56 220 C34 C17 220 C35 100 C18 220 C36 100 L1 
T50-2/33/0.5/61, 2 L11 T50-2/33/0.5/61, 2 L21 T50-2/33/0.5/61, 2 L2 
T50-2/28/0.5/52, 7 L12 T50-2/28/0.5/52, 7 L22 T50-2/28/0.5/52, 7 L3 
T50-2/21/0.5/40, 8 L13 T50-2/21/0.5/40, 8 L23 T50- 2/21/0.5/40 8 L4 
T50-2/16/0.5/32, 3 L14 T50-2/16/0.5/32, 3 L24 T50-2/16/0.5/32, 3 L5 
T50-2 / 13/0.5/27, 2 L15 T50-2/13/0.5/27, 2 L25 T50-2/13/0.5/27, 2 L6 
T50-6/11/0.5/23, 8 L16 T50-6/10 / 0.5/22, 1 L26 T50-6/11/0.5/23, 8 L7 
T50-6/10/0.5/22, 1 L17 T50-6/10/0.5/22, 1 L27 T50-6/10/0.5 / 22.1 
T50-6/8/0.5/18 L8, 9 L18 T50-6/8/0.5/18, 9 L28 T50-6/8/0.5/18, 9 L9 
T50-6/7/0.5/17, 2 L19 T50-6/7/0.5/17, 2 L29 T50-6/7/0.5/17, 2 L10 
T50-6/6/0.5/15, 1 L20 T50-6/6/0.5/15, 1 L30 T50-6/6/0.5/15, one type 
ferrite. / col. turns / p prov. / L wire. cm VD1-VD10 1N4001 R2-R5 1K R6 
100 R7-R8 75 K1-K21 HJR-2C L-12V TIANBO C2-C51: MURATA 
GRM42A7U3F101JW31L 100 pF 220 pF GRM32B7U3D221JW31L MURATA MURATA 
GRM42A7U3F560JW31L 56 pF 22 pF MURATA 42D1X3F220JY02L

Any further help let me know.
73 ... Sid.
------------------------------------------------------------------------------------------------------------------------------------

On 07/11/13 21:39, Rod Brink wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
>
>
> Hi Sid -
> Am puzzled over your comment below regarding the Russian filters 
> working "as a close of ALEX".  According to the Russian schematic the 
> filter interface is a simple parallel one, whereas the ALEX is an 
> unusual serial I/F involving a shift register.  Have I misinterpreted 
> your meaning?
> I surmise that the Russian filters would be driven from the Hermes J16 
> connector, pins 17-23 and pin 25 for PTT.  Is this correct?
> 73 de Rod KQ6F
> I have the BPF board and Hermes in the ANAN-10 enclosure occupying the
> bottom half and front panel of the larger case.
> The 300W PA/LPF board occupies the top half of the case and backpanel
> which has the power inputs, exhaust fan and the antenna connector.
>
> Everything works with cuSDR64 (TX excepted of course). Both the BPF and
> LPF switching work - they work as a clone of ALEX.
> I have tried ghpsdr3-alex but it does not support filter switching which
> means no RX signals or LPF connected for TX.
>
> I am waiting for Linux support with cuSDR TX and ghpsdr3-alex filter
> switching.
>
> Pictures on my QRZ.com page.
> 73 ... Sid.
>
>
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-- 
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Senior Staff Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks

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