[hpsdr] Transmit on HPSDR

[Tim O'Rourke]

Mike
Gerd (NT Electronics) makes T/R switch with and with out 6M preamp, plugs directly into Penelope via D25 plug. 
Gerd did male a very nice 100W amp with LP filters, it turned out that the finals he chose were in short supply and hard to get at a reasonable price. This was offered as a semi-kit with or with out a LCD display with SWR readout. I am sure if you are patient he will respond, HPSDR is a tiny portion of his electronic manufacturing. 
I cam loan you one of his T/R switches until he responds. He may sell a partial kit for amp if you can find the finals. I can vouch for both products working FB. I know it can be frustrating waiting, I have been there and share your frustrations. As for band pass modules, I do not have the a particularly noisy or quiet location and find I an get by with out them. A field day or Multi-Multi contest station may be a different story. Alex and a 100W amp will eventually come. The same exists for the QSR1, a transmit option has been promised for about 2 years. 
I did run my Pennywhistle or a 25W amp from HFprojects into a THP 1000W amp for about 200-300W out and let the finals in THP amp clean up the harmonics. 
Keep in mind that HPSDR was never intended as a P&P radio, it is for experimenting with some very fine hardware, if you are patient and willing to try alternatives while waiting for pieces to be re-offered or replaced with newer technology IE Metris verse Ozy.
Tim W4YN

-----Original Message-----
>From: Mike F <mikecf100 at gmail.com>
>Sent: Jan 10, 2011 7:28 PM
>To: hpsdr at openhpsdr.org
>Subject: [hpsdr] Transmit on HPSDR
>
>***** High Performance Software Defined Radio Discussion List *****
>
>Last Friday I received a HPSDR system I purchased from an individual on 
>the internet.  What I have found since Friday is that the system does an 
>outstanding job as a receiver, but it, as of yet, doesn't have a 
>complete working transmitter/power amp.  The system I purchased includes 
>a Penelope module and a PennyWhistle amp, but I find that there isn't 
>any hardware available to control transmit/receive antenna connectivity, 
>nor is there available hardware for send/receive filtering.  It is my 
>understanding that all of this would be taken care of by the Alexiares 
>module, which, according to the net, will be available in 2008.  Is 
>there, or will there ever be, a way to order this module as either a kit 
>or assembled.
>
>I understand that there is another PA being developed by someone (NT 
>Electronics???) (HERCULES???) that will produce 100 watts and contain 
>the necessary switching/filtering.  I have sent an email to NT 
>Electronics, but haven't yet received a reply.  I also saw info on 
>openhpsdr that indicated I could buy a T/R switch from NT Electronics 
>via an Ebay vendor.  Not true, I found the vendor but not the product.
>
>The frustrating thing is the talk about all of the new "techie" modules 
>being developed that will replace old modules (that are doing their jobs 
>just fine) but there doesn't seem to be any emphasis on achieving one 
>complete design.
>
>My background is in electronics and computers.  I spent 10 years as an 
>electronic technician, and 40 years as an engineer working on spacecraft 
>and underwater electronic systems.  If the reason a complete design 
>hasn't been achieved is because of lack of manpower, let me know.  I am 
>retired and available.
>
>The only boards I seem to be able to order are ones I have or don't 
>need.  If I have missed finding out how to order a Alexiares or Hercules 
>module, please tell me how.
>
>Thanks
>
>Mike Fager, K7SR
>_______________________________________________
>HPSDR Discussion List
>To post msg: hpsdr at openhpsdr.org
>Subscription help: http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org
>HPSDR web page: http://openhpsdr.org
>Archives: http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/


Tim O'Rourke 
W4YN at ARRL.Net
Low Power Amateur Radio Rocks 
Member of Flying Pigs,ARCI,GQRP,RSGB,ARRL Life Member
NHRA Life Member

 1294713668.0