[TenTec] OT: Question to the group

[Tim]

Hi,

Anyone want to compare the Johnson matchbox to a model 254?


Thanks,

Tim
KE4KE


On 07/18/2016 12:38 AM, rick at dj0ip.de wrote:
> No, this balanced link matchbox was limited in its matching range and could definitely NOT match just about anything.
>
> Time and again we saw that at field day when using a Johnson Viking Matchbox 275w with two different openwire fed antennas.
>
> Often we had to play with feedline lengths to get them to work on all bands, but when I substituted my MFJ-974B for the Viking, we could get a good SWR on all bands without having to adjust the feedline length.
>
> The JVM was limited in matching range.
>
> The downside is, the MJF has a lot more loss than the JVM.
> So in each case we chose the lazy way out and simply used the MFJ.
>
> The correct answer (and procedure) is to read the information on my web site about the JVM and think about what I have written.  It will be apparent why the JVM has limited matching range.
>
> THEN follow my guidelines to modify your JVM and it will have the matching range we need and THEN it becomes the best matchbox ever - because then it becomes an ANNECKE - which is the best matchbox ever made.
>
> Cheers!
> Rick, DJ0IP
>
> -----Original Message-----
> From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of Gary J FollettDukes HiFi
> Sent: Saturday, July 16, 2016 7:51 PM
> To: - -
> Cc: Discussion of Ten-Tec Equipment; Scott Harwood
> Subject: Re: [TenTec] OT: Question to the group
>
> Not “wrong”, just dated a bit in regards to WARC band operation.
>
> The balanced link matchbox design could match just about anything. It was not terribly lossy and it was easy to use.
>
> I have used them with solid state radios and they work beautifully on the bands for which they were intended - far better than the autotuners.
>
> I did not intend to give the notion that it was perfect. However, for a balanced line tuner, it was better than what is commercially available today, IMHO.
>
> Improvement is always welcome though…
> Gary
>
>