[UK-CONTEST] W3NQN style multi-band transmitting BPF

[David G3YYD]

If you want to get into SO2R contesting and do not want to spend lots of 
£ well $notes buying commercially made filters then this is the way to go.

All the parts are readily available and mainly from UK sources but the 
toroid set comes form the USA.

I would not be without mine. I use two sets one for each rig.

73 David G3YYD

On 01/05/2011 06:03, Bob Henderson wrote:
> Please forgive the cross posting but this may be of interest to folks not
> subscribed to both groups.
>
> You may be aware of the 6 band transmitting BPF project I ran some time
> ago.  Many contesters around the world are now using these filters in their
> M/M and SO2R set ups.  Stock of PCB sets manufactured for the project have
> now run out but requests continue to roll in, so I am looking at the
> possibility of a further production run.  However, this is only viable if
> there is significant demand.  Details of the project including a
> photographic record can be found at:
>
> www.5b4agn.net
>
> where a copy of the user manual is also available for download.
>
> A set of PCBs comprises one motherboard, six filters, one band decoder&
> antenna relay driver and one front panel control.  The double sided FR4
> substrate PCBs are professionally produced and of good quality.  All have
> silk screen and solder resist layers.  Mother and filter boards have HD
> plating for good RF properties.  The mother board incorporates a micro
> strip-line feed system for good by-pass SWR beyond 60MHz.  Cost of a 9 PCB
> set is likely to be GBP 50 or EUR 60.  Full build support is provided via my
> TXBPF Yahoo group.
>
> If you are interested in obtaining sets of PCBs for this project please drop
> me a note ASAP to bob.5b4agn(AT)gmail.com
>
> 73
>
> Bob, 5B4AGN
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