To: | cq-contest@contesting.com |
---|---|
Subject: | Re: [CQ-Contest] Dayton atendees - tell us about the new Yaesu |
From: | "Richard Detweiler" <rdetweil@hotmail.com> |
Date: | Thu, 20 May 2004 09:06:41 -0500 |
List-post: | <mailto:cq-contest@contesting.com> |
INRAD does sell a #352 - 600 Hz Kit to swap the 1Khz filter for the Orion, You need to be good with surface mount or get new capacitors. When you order, be sure to order the Orion crystal board. It will require a small circuit board ( purchased from radio shack ) to assemble. 73's Rich K5SF
Very interesting presentation there. What I did not understand is why Orion with 500hz roofing filter is worse then Orion with 1 khz roofing at 2 kHz spaced dynamic range test? There is * on the second line of the table but no explanation what it means. Can somebody clear it up for me please. 73, Igor UA9CDC<< Orion has last two filter positions of 500 and 250 Hz selectivity configured with additional amplifier stage, aimed at compensating the loss of the narrower filters. This is causing degradation of overload performance and adding more noise. Better solution is to use original 1000Hz filter position and replace the 1000 filter with 600 Hz filter or disable the amps. W4ZV came up and collected orders for special order of 600 Hz filter kits from INRAD. This provides further improvement in excellent Orion performance without degradation due to the amps in the 500 and 250 designated positions. It would have been better to not use amplifiers in those last positions and if more gain needed, use the preamp. Yuri, K3BU.us
|
<Prev in Thread] | Current Thread | [Next in Thread> |
---|---|---|
|
Previous by Date: | Re: [CQ-Contest] LotW - Needs More Participation, Charles W. Shaw |
---|---|
Next by Date: | Re: [CQ-Contest] LotW - Needs More Participation, Alfred J. Frugoli (KE1FO) |
Previous by Thread: | Re: [CQ-Contest] Dayton atendees - tell us about the new Yaesu, Igor Sokolov |
Next by Thread: | [CQ-Contest] Kudos to the Dayton organizers, Jim Idelson |
Indexes: | [Date] [Thread] [Top] [All Lists] |