[Elecraft] xv-144 TX alignment question please.

[Don Wilhelm]

Paul,

The exact voltage at TP5 is not critical at this stage of alignment, it 
is simply an indicator of the peak while you are tuning the bandpass 
filters.  Keep the voltage high enough for a reliable reading, but 
higher voltages will mask the peak, so try to keep the voltage within 
the range indicated in the manual.

Use a plastic tool that fits the slugs - if you do not, you risk 
breaking the slug.  Should that happen, you must change the inductor.  
Better to wait until you have a good tool, Elecraft will send a 
replacement if you ask parts at elecraft.com.

After you do the peaking, you will set the input attenuation to produce 
full power (20 watts) with the input signal level from your transceiver, 
and then you will set the LEDs to indicate that 20 watt power level 
correctly.  Do the adjustments in the order indicated in the manual.

73,
Don W3FPR

Paul Radge wrote:
> Hi all,
>       Wondering if someone can give me some advise please,
>  
> I'm driving my xv-144 with a TS850 which according to the ts850 manual 
> has an output of 0-10dbm so i have chosen the input jumper settings 
> within the xv-144 of 250mW as the lower setting is 1mW and i don't 
> want to over drive the txvr.
>  
>  I've managed to position the tx coils as per the manual but have 
> stripped the alignment tool and have been taking to it(the tool) with 
> a knife to try adjust the slugs with little luck on obtaining a grip 
> on the slugs.
>  
>  What i'd like to ask about is the voltage measured at TP5 and how 
> critical is it that the final voltage measured is under 10v as per the 
> manual.To achieve the 8-10w drive from the xv-144 that i require for 
> my amp i'm measuring just over 13v at TP5 while adjusting the input 
> attenuator R22.
>  
> Wondering if this is ok (?) or if i should persevere with peaking the 
> tx coils (?)
>  
> I'm concerned that if i adjust the jumper setting to 1mW positions 
> that 0-10dbm will be over driving the xv-144.
>  
> Any advice more than welcome and appreciated.
> Kind regards
> Paul
> VK3DDU
>