[Top] [All Lists]

Re: [Yaesu] Yaesu Digest, Vol 174, Issue 2

To: Ronald Youvan <ka4inm@gmail.com>
Subject: Re: [Yaesu] Yaesu Digest, Vol 174, Issue 2
From: John Geiger <af5cc2@gmail.com>
Date: Tue, 7 Nov 2017 11:43:33 -0600
List-post: <mailto:yaesu@contesting.com>
In terms of the tuner mod, do you know if it really increases the tuner's
matching range, or does it just
chance the SWR foldback circuit so your rig won't cut back the power as
aggressively into a mismatched antenna?
I ask because there was a mod like that for the Yaesu FT847 and the FC-20
tuner, but the general consensus
was that it just fooled the SWR protection circuit.  If one is not careful
that can lead to many burned out finals.

Now the FT847 didn't have a built in SWR meter so you really couldn't tell
just by looking what was going on.
The FT450 does have a built in SWR meter.  So I am taking it that after the
mod the rig's SWR meter will show
a 1:1 SWR when using the tuner on some mismatched antennas?

73 John AF5CC

On Tue, Nov 7, 2017 at 11:30 AM, Ron Youvan <ka4inm@gmail.com> wrote:

>  Keith W9RM Morehouse wrote:
> I'm still using a FT1000MP MKV as a primary HF radio and as a IF radio for
>> 2, 222 & 432.  Still works great for both purposes.  I like having the
>> extra power on HF and, if you pack it full of filters and do a couple of
>> Inrad mods, it holds it's own under crowded contest conditions.
> The only issue I see is the lack of a decent noise blanker.  It appears
>> Yaesu let the summer engineering interns design the blanker on this model.
>> Compared to both my old standby FT1000D and my FT920 6M radio, the MP MKV
>> blanker is a disaster.  I've made a few mods to it, which helps some, but
>> in general, it's pretty useless.
>   I have a FT-450D and I "opened up the antenna tuner's range"* and it
> will load over an incredible range of antennas on the wrong frequencies,
> but the noise blanker barely accomplishes anything.
>   Anyone ever hear of any form of relief for this blanker?
>   * info on the WWW  (changes 3:1 to 7:1)
>   (like my 40 meter dipole on 75 meters)
> --
>   Ron  KA4INM - Youvan's corollary:
>                 Every action results in unwanted side effects.
> _______________________________________________
> Yaesu mailing list
> Yaesu@contesting.com
> http://lists.contesting.com/mailman/listinfo/yaesu
Yaesu mailing list

<Prev in Thread] Current Thread [Next in Thread>