[Premium-Rx] Receiver Selection

[Kevin]

Hi Eugene:

Once we get funding, I will create a website - good idea actually. It will need 
to be password protected but I will share it with the list.

Thanks for your mail.

Kevin

"Eugene Hertz" wrote at 10:10 pm on Fri, Dec 17 2004:
>sounds like a really cool and interesting project. I have the harris rf-590H 
>and it is a great radio. Frequency resolution is actually 1Hz ! Very stable I 
>think something like 10^-8 per year or something rediculous. Its really 
>incredibly stable. It has up to 100 channels and can scan them. Radio has ISB 
>but I dont know if your application will need that. Would love to learn more 
>about this project. Do you plan to create website to document it? sounds like 
>fun
>Eugene
>
>>-----Original Message-----
>>From: Kevin [mailto:kgreene at echo.cellmail.com]
>>Sent: Friday, December 17, 2004 03:43 PM
>>To: 'Premium Receiver'
>>Subject: [Premium-Rx] Receiver Selection
>>
>>Hello to the list: 
>> 
>>I am working on a potential project where our organization will be providing HF 
>>communication to a number of remote users. The primary mode will be data 
>>(PACTOR and CLOVER with limited SITOR) and a limited amount of voice traffic. 
>>We are also looking at a limited amount of digital voice and narrow bandwidth 
>>imaging but this is more for the future. 
>> 
>>The concern I have is in several areas: 
>> 
>>1. Frequency stability within +/- 10 hz (or better) 
>>2. Receive filter capabilities - need to support PACTOR III, CLOVER 2000, 188-114B, etc 
>>3. Power can be 220 VAC or 24 DC 
>>4. Receiver overload protection 
>>5. Full remote control using RS-232/422 interface 
>> 
>>We are considering the use of high quality antennas with broad bandwidth and 
>>low noise (considering the 8 element HERMES loop system). The receive site will 
>>be a remote location - hopefully miles/km from power lines and roads with a 
>>microwave backhaul to a nearby cellsite to be then linked using our fiber 
>>network to our main control facility. We expect that the receive site will need 
>>to support 8 RF channels (max). 
>> 
>>I am looking at three different high performance receivers. The 
>>Rockwell-Collins RT-2200, Harris R-590A, and the Cubic 2000 series. I have also 
>>looked at the use of the ICOM receivers (R-8500) but I question its stability 
>>(per its web site information). I would welcome suggestions for other vendors 
>>to consider. 
>> 
>>While price does come into play, it is not a critical decision factor. We are 
>>more concerned that the financial investment we put into this project will 
>>provide a very high quality system to the end users. As the path lenght will be 
>>long (>4,000 km), we are concerned that the quality we design into the system 
>>will play a key role in its success. 
>> 
>>Thanks for your help. I am sorry I can not give more information but we are 
>>still in the internal proposal stage and do not wish to give out too much 
>>information at this time. If we get funding, I will provide more 
>>information. 
>> 
>>Cheers. 
>> 
>>Kevin 
>> 
>> 
>> 
>> 
>>                                                
>> 
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>>
>
>