Re: Tuna Helper power limit.
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Thank you for the additional information Chuck, I'm confident that the combo should work fine.
I need to fabricate a pretty mute cable now, I modified the one I had for a different purpose.
OK on the Topper relay wiring and modifications, I did pull up the schematic yesterday to see if it would be a simple hack. I seem to recall making a small mod underneath the Topper board to enable a choice of transceiver or separates. I've mostly used the Topper for my RockMites.
Well I guess if I do let the magic smoke out from my Tuna Helper it's a good excuse to order the newer version! I really enjoy building the Tuna can kits, the trouble is that I have almost all of the flavours!
73, Colin
On Wed, 2 Dec 2020, 10:48 Chuck Carpenter, < w5usj@...> wrote:
Colin,
I had one Topper modified to provide the mute circuit.? Basically, I
did some cuts and jumpers to make the relay connections like the Tuna
Helper.
I've also done mods to the Topper circuit to use it for separate TX and
RX.? That way I could use the Topper amp for a Super Tuna TX and
Sudden ][ RX, for example.
The RF sense circuit is the same for Topper and Helper and that worked OK
to over 10W.? At least all the smoke stayed in... :-)
At 03:09 PM 12/1/2020, you wrote:
I will give the set up a try.
I've been running the Topper amp for higher powered work and of course
the TX / RX switch is built in. I do miss the RX mute function
though.
Chuck, W5USJ (ex K2OFN)
ARCI 5422
EM22cv, Rains Co., Texas
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Chuck, W5USJ
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