[amsat-bb] FW: Re: Request for help with satellite capable old rig ECHO 70 by KLM

Kevin Deane summit496 at live.com
Fri Jul 20 23:56:39 PDT 2012


I am fowarding this I did not catch Hector's friend's email...   :)

Kevin
KF7MYK


 



From: wk4r at charter.net
To: summit496 at live.com
CC: coro at enet.cu
Subject: RE: [amsat-bb] Re: Request for help with satellite capable old rig ECHO 70 by KLM
Date: Fri, 20 Jul 2012 23:52:19 -0400





Try to forward this to him:  http://6mt.com/echo70.zip   Not sure again if it has the schematic but there is something there. 
 


From: Kevin Deane [mailto:summit496 at live.com] 
Sent: Friday, July 20, 2012 2:58 PM
To: wk4r at charter.net
Subject: FW: [amsat-bb] Re: Request for help with satellite capable old rig ECHO 70 by KLM
 

I was trying to get him the schematics/manual maybe you can help.

Kevin
KF7MYK


 

> Date: Fri, 20 Jul 2012 10:14:16 -0400
> From: coro at enet.cu
> To: amsat-bb at amsat.org
> Subject: [amsat-bb] Re: Request for help with satellite capable old rig ECHO 70 by KLM
> 
> Dear amigos :
> I am new to this list. My very good friend CO6CBF Hector asked me to make
> a comeback into the ham satellites world.
> I found an ECHO 70 KLM transceiver that was in bad shape, but that could
> be repaired. Now it is receiving , but on transmit the power is only 1 
> Watt.
> The receive sensitivity is not great, but enough for Hector to make a two
> way contact with it... Hector has a very good 70 cms band antenna system
> that really helped.
> The 70 cms signal level at the input of the first of two output filters is
> 10 Watts, measured with professional test instruments, but after the
> filters there is only 1 Watt.
> I suggested to Hector that he blew hot air over the ceramic trimmers
> of the two filters in order to remove humidity ...
> It worked on one of the filters... now there is good power output
> on the 435 megaHertz segment , but 432 megaHertz is still at the
> low power output level.
> FYI, we are not authorized to operate on the 432 megaHertz segment
> used by the Oscar 7 AO7 ancient satellite... but do have permission
> to operate on the 435 megaHertz segment that other satellites use.
> Any information about the ECHO 70 KLM transceiver that can be found
> will be most useful, as once the rig is in good working conditions it
> will be used frequently from my EL83td grid square location in downtown
> Havana, and possibly by mini dx satellite expeditions to other nearby
> grid squares too.
> If the files that contain the information about the ECHO 70 KLM rig
> are large, please send them to:
> arnaldo.coro at gmail dot com
> 
> Thanks in advance for your help and hope to make many new friends
> in my return to the amateur satellites world after many years
> of absence * I am from the days of Oscar 7, RS 10 and RS 12 and
> RS 15 * !!!!
> 
> 73 and DX
> Arnie Coro
> CO2KK
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