[hpsdr] Control an FT-1000D Low Pass Filter assembly with PSDR mouse?

[Tom Cathey]

Thanks for the info, Joe and Phil.
 
Yes, I need 9V high switched to the relays at 100 ma per band.  The relays
are grounded on the board.    I see the connections coming off the Penny 25
pin connector on the schematic. Also see the software toggles required.
Good.
 
That circuit looks good, Joe. Though after a quick look, the M54581 chip is
$20 and only available from the UK. 
 
I was thinking an easier way might be to use a small 2N2907 PNP transistor
which gets its base grounded from Penny, the collector to 9V and the emitter
in series with the LP relay.  I would need one transistor per band, or about
seven transistors total. Not too bad.   
 
Does this sound like it would work OK?
 
 
Tom, K1JJ
 
 
  _____  

From: K1rqg at aol.com [mailto:K1rqg at aol.com] 
Sent: Thursday, March 03, 2011 8:35 PM
To: k1jj at comcast.net; hpsdr at lists.openhpsdr.org
Subject: Re: [hpsdr] Control an FT-1000D Low Pass Filter assembly with PSDR
mouse?


Tom 
 
This circuit should fill the bill. Thanks to WW2R for this design.
 
http://g4fre.com/hpsdr_high_side.pdf
 
Just apply 9 v instead of 12 v! It drives my Yaesu FT-747 brick and filters.
 
73 de Joe K1RQG
 
 
In a message dated 3/3/2011 8:15:11 P.M. Eastern Standard Time,
k1jj at comcast.net writes:

***** High Performance Software Defined Radio Discussion List *****




My plans call for using an old Yaesu FT-1000D 200W PA unit with relay
switched LP Filters as my linear amplifier for Penny.
 
I would like to switch bands on this low pass filter assembly using the
mouse PSDR software band selections along with the Penny/Mercury band
selections.
 
Could someone advise me on the best approach to switch the 9 volt LP filter
relays, 160, 75, 40, 20, 15 and 10M  using the existing output interface?
Or do I need to build an interface? 
 
The simple alternative is to  just use a rotary band switch and switch the
L.P filter manually.  I want to explore using the mouse auto-method first.
 
Thanks.
 
Tom, K1JJ


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