[Elecraft] XV144 and linear amplifier

Eric Swartz - WA6HHQ, Elecraft eric at elecraft.com
Fri Jul 6 13:29:08 EDT 2007


The XV144 also provides sequencing of the PTT versus RF output. This is 
described in the XV144 manual.

73, Eric   WA6HHQ
---

Don Wilhelm wrote:
> Samir,
>
> The only valid reason I know of to use a sequencer is to protect 
> preamplifiers and other devices that could be damaged by the onset of 
> RF.  Another common reason is to allow time for a slow amplifier relay 
> to switch so you do not cause arcing at the amplifier contacts - I do 
> not consider that a valid reason becuase the real solution is to 
> replace the map relay with a faster one.
>
> So, you may not need a sequencer, but consider the amplifier relay 
> speed in making your decision.
>
> 73,
> Don W3FPR
>
> Samir Popaja wrote:
>> Hello,
>>
>> I'm using XV144 with Kenwood TS-850S(will be replaced with K3). If I 
>> want to
>> use it with linear amplifier, do I really need Sequence Controller (a´la
>> http://www.ssb.de/amateur/pdf/dcw2400e.pdf)? I do NOT use 
>> preamplifier, no
>> need for it.
>>
>


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