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Re: PRC320 and dipole?

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Ben.

As we (I) said earlier this was an amateurs bodge, not official teaching

In reality the 320 does tolerate a substantial mismatch, although there is no way of know what the output is under such circumstances, in service terms.

It automatically turns down the output to carry a mismatch

Mike


-----Original Message-----
From: Military1944@...
To: Racal-manpacks@...
Sent: Thu, 23 Sep 2010 9:13
Subject: Re: [Racal-manpacks] PRC320 and dipole?

?
In a message dated 22/09/2010 19:58:42 GMT Daylight Time, iain@... writes:
Feeding the dipole with coax from the transmitter output BNC is the correct
way to do it - the operator is expected to roll up or unroll the dipole
ends for best match.
: The trouble there Iain is that there no way of knowing the match as the metering is not in circuit,the manual states using the BNC and I guess they (the mil) must have just accepted the slight mismatch etc, after all, even a diploe cut for say 14.200 will be off at 14.250 so I think we just need to accept it.
There was a thread on the clansman_larkspur group a
few months ago about using the ATU for a dipole (with one leg connected to
case ground and one to the antenna terminal) and I seem to recall that the
conclusion was that a series capacitor of a few 10s of pf and a suitably
high voltage rating between the antenna terminal and that leg of the dipole
helped it match.
: Thats interesting as the mnual makes no mention of adding a cap, and none is carried in the kit, unlike the Ws19 cap unit.
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Anyway, out portable next week, will have a play, hi.
?
cheers, Ben.

MARKETPLACE
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