[amsat-bb] Modern Equipment Matrix

Patrick STODDARD (WD9EWK/VA7EWK) amsat-bb at wd9ewk.net
Sun Mar 22 04:14:46 UTC 2015

Hola Pavel!

Thanks for your post. I did not mention any of the Chinese-made
HTs like the Baofeng UV-5R earlier, since they are not capable of
full-duplex operation on SO-50. Unfortunately, not all UV-5Rs are
the same. I have used one of mine as the downlink receiver, when
connected through a diplexer to my Elk log periodic.  I have
transmitted with another UV-5R, a Baofeng UV-82, and even a
Wouxun KG-UV8D.

Last year, I did a demonstration on SO-50 using two Baofeng HTs
(UV-82 for the uplink, UV-5R for the downlink) connected to a
diplexer and my Elk antenna. This worked OK, and I made the
satellite audio into a slideshow video I posted on YouTube:


I have not tried any of my Baofeng or Wouxun HTs with an Arrow
Yagi, or a homebrew equivalent of that Yagi.

I know a friend who has ordered the new AnyTone Termn-8R
2m/70cm FM HT, which is being promoted as capable of full-
duplex operation. It may be like the Wouxun KG-UV8D, which
has been promoted the same way, but cannot work full-duplex
with the weak SO-50 downlink. I hope to get a chance to try
that new AnyTone radio soon, to see if it does any better on
SO-50 than the KG-UV8D.

Buen fin de semana, y 73!

Twitter: @WD9EWK

On Sun, Mar 22, 2015 at 3:50 AM, Pavel Milanes Costa <co7wt at frcuba.co.cu> wrote:
> I can give [bad] references on the Baofeng UV-5R HT...
> On receive with some as simple as a moxon on top of the HT the SO-50 is
> clear and loud as long your hand can turn to match polarization.
> But, as soon you key the PTT on ANY rig on 2m near this tiny HT goes
> overloaded, no matter if you use a diplexer or a LPF with at least 30dB att.
> on 70cm...
> But, maybe on Fox sat series...
> I feel I need to make this clear... to others not to put his "eggs on that
> basket"
> 73, CO7WT

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