[Yaesu] Hello FT1000/D and Mark V users, please read..

[Steve Jones]

this is a copied and pasted message from Alpha which some of you might have
already have known...but I sure didn't. I run a pretty low and resonant
antenna farm and I saw nothing about this in my manual for my Alpha 91B. It
might be of interest to owners if these fine rigs. If this has been hashed
out before..I apologize but I have never seen anything about it on the
reflector. 73, Steve



Steve Jones wrote:
>
> I run an FT1000D and I do not use the internal tuner on the radio. The
> antenna I use is either below 1:5:1 or tuned using a Drake MN2700 tuner so
> that the radio and amp are always seeing a 1 to 1 swr or at least a 1:5:1.
> So according to your reply, This should not be a problem correct? This
> should only apply also only when the amp is on...correct. I still always
> shoot for 1:5:1 when I do not have the 91B on, but I don't get as tight on
> the settings and tuning when the amp is off and I am running the FT1000D
at
> full till.

No, the paragraph below is about the limits when you ARE running with
the amp off or in Standby and the radio is at full output.  When the amp
is on the input relay only has the drive power of 50 or 60w through it.


> >   If your antenna has a fairly low VSWR and you are NOT using the
> > internal tuner of the FT-1000 (MP MkV ?), it should be OK to run 200w
> > through the amp when it is in standby.  It is probably pushing the
> > limits of the relay contacts, though.  If the antenna VSWR is high
> > enough to need the internal tuner, then the voltages/currents on the
> > feedline (which the amplifier bypass relays are part of) may be abnormal
> > enough to damage the input relay contacts.

--
73 - Glenn AE�Q
Alpha/Power
303-473-9232 x 141



Have a great day, because if you don't someone else will!!!

73, Steve, NX1G