[amsat-bb] 2nd/backup FM HT recommendations

[Patrick STODDARD (WD9EWK/VA7EWK)]

Philip,

I used an adapter from Fry's Electronics for a long time, with
a 2.5mm stereo plug on one end and a 3.5mm stereo jack on the
other:

https://www.frys.com/product/601036

It stuck out of the side of the TH-D72 over an inch, and
with a cable I think it put extra stress on the radio's speaker
jack. I found the right-angle plug with the short pigtail, and
I can run the pigtail under the strap from the SC-55 soft case
that goes over the top of the radio (or under both of those
straps, across the top and on one side) to lessen the stress on
the radio's speaker jack.

Be careful with the selection of adapters for the TH-D72's speaker
jack. Some have enough metal and plastic around the plug, where
those adapters won't stay plugged into the speaker jack. The one
I listed from the Fry's Electronics web site above was the best
of the few I originally tried with my TH-D72, and stuck with
until I found the Amazon adapter with short pigtail and right-angle
plug I referenced previously.

With an extension cable, I can have my speaker about 15 feet away
from me, but usually am somewhere between 5 and 10 feet from it
when I do demonstrations. Even at 10 feet or so away, I can get
audio feedback if I transmit with the speaker firing at me, but
5 to 10 feet is usually far enough where I can avoid the feedback.
An amplified speaker may be what you need to get a little more
volume, without running into the feedback issues. Places like
Fry's Electronics should have a selection of those speakers, as
would online sources.

Good luck, and 73!





Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
Twitter: @WD9EWK or http://twitter.com/WD9EWK







On Fri, Jun 21, 2019 at 12:23 PM Philip Jenkins <n4hf.philip at gmail.com>
wrote:

>
> Patrick, the former is pretty much what I've been doing at demos. A fairly
> large unpowered Radio Shack speaker with a long cord, plugged directly into
> the D72's output jack. I then point the speaker away from me and stand
> several feet away and use the D72's internal mike, full duplex
>
> .This has worked well for the audience being able to hear.  No feedback
> problems reported yet. I would like to be able to hear better though, hence
> the point of my post. ;-) I think I've only made a couple of Q's for this
> reason.
>
> I'll check out the Amazon link. I think Fry's Electronics may have
> something similar. (I need a good reason to go to Atlanta anyway <grin>;
> Ham Radio Outlet is only about 5 miles away from Fry's). I'll look for a
> Bluetooth speaker like you described too.
>
> <snip>
>
>
>>