I used to have an Echo 70, and may still have the documentation on my home computer. It is a SSB/CW rig, and if I recall correctly, the 435 segment can be moved to cover the satellite band by changing a single crystal.
George, KA3HSW ----- Original Message ---- > From: Prof. Arnaldo Coro Antich <[email protected]> > To: [email protected] > Sent: Fri, July 20, 2012 11:42:17 AM > 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 > _______________________________________________ > Sent via [email protected]. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > _______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
