[hpsdr] Hermes BOM FL1 substituted by RLP-50+???

[Dave]

Same issue. Do I trust the schematic or BoM?
On the BoM spreadsheet line 66 & schematic says resistors are 22E which makes them 1.65M ohm. The part number indicates a 22 ohm resistor. 

Even worse is line 128 showing a value of 51E (3.32 M ohm) but the part number is for a 51 ohm resistor and the schematic shows a 50E (3.24M ohm) resistor. 

Can I trust the schematic to be accurate and just work from there?

Dave


On Nov 2, 2012, at 11:01 AM, Ian Guffick <iguffick at iee.org> wrote:

> ***** High Performance Software Defined Radio Discussion List *****
> 
> Hi Andrew,
> 
> I've been trying to build from the BOM on the Apache Labs site, it has a few omissions and errors. It is not the BOM that has been used for the TAPR build. The BOM that TAPR used is obviously around somewhere, but I don't know where it is available, does anybody have a link?
> 
> From pictures I've seen of the TAPR built boards, they have one each of RLP-40+ and RLP-50+.
> I think it would be wise to stick with the RLP-40+ (i.e. one of each).
> 
> BR,
> Ian G7JXY.
> 
> On 1 November 2012 21:08, Andrew <irbsurfing at yahoo.co.uk> wrote:
>> ***** High Performance Software Defined Radio Discussion List *****
>> 
>> 
>> Hi,
>> I see in the latest Hermes production BOM on the Apache Labs website, FL1 which was an RLP-40+ has been substituted for an RLP-50+.
>> The schematic still shows an RLP-40+.
>> Is the BOM correct?
>> This is not a very good move as it will degrade the Tx spurious.
>> Please can someone explain why this has been done?
>> Thanks,
>> Andrew
>> G4XZL
>> 
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