Dan,
160 Meters is a world all to its own. Things will happen to your station that
would never happens at any other band.
Trouble shoot your problem by eliminating extra parts.
Take the RCS-10 out and connect the transmission line from the inverted-L
direct to the station. Tune and get the inverted-L working to its best. See if
other things blow or burn up. Once all is working then place the RCS-10 back in
line. The length of the coax, something coupling at 160 meters, a loose ground
or ground loop might be in play. The list can go on and on and will change as
you tune the inverted-L for best performance. So again KISS go direct to the
inverted-L and see what happens.
Rich AA2MF
On Dec 31, 2011, at 8:21 PM, Paul Dulaff wrote:
> Dan
>
> A couple of thoughts...
>
> When transmitting, is the RCS-10 antenna switch inadvertantly changing
> (switching) antennas (ports) during the transition from receive to transmit,
> possibly RF getting into the switching circuit causing this ? Do you lose the
> 12VDC to the switch when changing from receive to transmit ? Are you trying
> to support semi-break-in with the RCS-10 ?
>
> The ratings on this switch are fairly good. 16 amps, 1200 volts. I would
> think that it would need to be feeding an open or a short to fail this
> quickly at this power level or switching at full power.
>
> Paul - WB2NMI
>
>
> ----- Original Message -----
> From: Dan Bookwalter <n8dcj@yahoo.com>
> To: topband@contesting.com
> Sent: Sat, 31 Dec 2011 17:34:09 -0500 (EST)
> Subject: Topband: More Inv-L matching issues.... BIGGER ISSUE
>
> Ok...
>
> I went and added 9 more radials the SWR is now at 1.2:1 after some adjusting
> of the air variable....
>
> well , i decided to see how the amp (Alpha 374A) loaded into the antenna , I
> keyed down with maybe 500 watts and everything went dead again in less that 1
> second. So it now appears that I have smoked another relay in the RCS-10 .
>
> One thing about this configuration is that the base of the antenna is about
> 16" from the RCS-10 , is this too close ? I can probably move it so that it
> is about 4' away if that is the issue.... I cant afford to keep destroying
> relays and such....
>
> thoughts ?
>
> Dan N8DCJ
>
>
> ________________________________
>
> -----Original Message-----
> From: topband-bounces@contesting.com [mailto:topband-bounces@contesting.com]
> On Behalf Of Dan Bookwalter
> Sent: Saturday, December 31, 2011 2:41 PM
> To: topband@contesting.com
> Subject: Topband: More Inv-L matching issues....
>
> well about a month ago i put up my Inv-L , it is now ~165ft , I have an air
> variable in series , and 12 radials anywhere from 150-250ft long ( going out
> to add more as soon as i am done typing this). my SWR wasn't too bad maybe
> 1.7:1 at the best. Two nights ago I added an amplifier to the mix ~700w ,
> well to make a long story short I smoked one of the relays in my RCS-10 , I
> am now not too sure what to do , I don't want to keep blowing out relays in
> the RCS-10.
>
> I had several responses back then regarding matching etc... , but , in my
> haste i seem to have deleted them :-(
>
> so here i am again asking for advice...
>
> any help greatly appreciated
>
> Dan N8DCJ
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK
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>
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK
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