[600MRG] Ultimate 3 must have???

[Brian Pease]

Excellent point.  The only workaround other than announcing would be if 
I had WSPR pretend to transmit in sync with the U3.  The issue is that 
WSPR randomly changes transmit times, except for the minimum 2 min on, 2 
min off setting.  Otherwise it would still work, but I would lose some 
receive periods.
On 11/30/2013 2:38 PM, John Langridge wrote:
> Outstanding Brian!  I will print this out for future use!
>
> Also,
> Since you are using the U3, you don't have the same reporting to the 
> WSPRNet website that those of have when we are using the conventional 
> software.  As a result, we don't know that you are on the air with 
> WSPR unless someone reports your received signal to the website (the 
> standard WSPR process).
>
> All that said, when you fire up on 630m WSPR, can you send a message 
> to the list so we know to be listening?  I find that a lot of guys 
> rely on the website's now broken map to see who is transmitting and 
> whether they should listen.  That will become more of a problem as 
> more ops transition to the U3..
>
> 73 and thanks for your info!
>
> john XIQ
>
>
> ------------------------------------------------------------------------
> *From:* Brian Pease <bpease2 at myfairpoint.net>
> *To:* John Langridge <jlangridge at sbcglobal.net>; "600mrg at w7ekb.com" 
> <600mrg at w7ekb.com>
> *Sent:* Saturday, November 30, 2013 1:29 PM
> *Subject:* Re: [600MRG] Ultimate 3 must have???
>
> The U3 turns it's tiny RF power amp on and off with a second identical 
> MOSFET wired to ground.  This T/R Mosfet receives a +5VDC signal from 
> the controller when Transmit starts.  I just brought out this wire and 
> use it to turn on a MOSFET that operates my homemade 12 Volt T/R 
> relay.  It also turns on a MOSFET that shorts out the mike input line 
> to the computer during transmit.  In this case, the DC bias for the 
> electret mike biases the MOSFET drain.  NPN transistors would also 
> work because the 5V control signal can supply some current.  The same 
> line also turns on the Class-E amp, which has a big keying MOSFET that 
> applies power to the push-pull final. This last is not strictly 
> necessary, but may prevent noise in the receiver.
> On 11/30/2013 1:56 PM, John Langridge wrote:
>> Brian,
>>
>> How are you controlling T/R?  RF Sense or something else?
>>
>> thanks,
>>
>> John XIQ
>>
>>
>> ------------------------------------------------------------------------
>> *From:* Brian Pease <bpease2 at myfairpoint.net> 
>> <mailto:bpease2 at myfairpoint.net>
>> *To:* 600mrg at w7ekb.com <mailto:600mrg at w7ekb.com>
>> *Sent:* Saturday, November 30, 2013 12:49 PM
>> *Subject:* Re: [600MRG] Ultimate 3 must have???
>>
>> Exactly.  Just build it into an old dusty box.  Hans is almost
>> overwhelmed with orders now that the word has gotten out. It is great
>> for me as I have a 3586C receiver.  The U3 Drives my amp and operates
>> the T/R switching and receiver muting.
>> On 11/30/2013 1:35 PM, John Langridge wrote:
>> > Mike you are going about this all wrong!
>> >
>> > When something shows up new at the operating position and the wife 
>> asks, the right answer ALWAYS is "Oh honey, I've had that for years" ;-p
>> >
>> > 73,
>> >
>> > John XIQ
>> >
>> >
>> >
>> >
>> > ________________________________
>> >  From: Mike.WE0H <we0h at yahoo.com <mailto:we0h at yahoo.com>>
>> > To: 600mrg at w7ekb.com <mailto:600mrg at w7ekb.com>
>> > Sent: Saturday, November 30, 2013 12:33 PM
>> > Subject: Re: [600MRG] Ultimate 3 must have???
>> >
>> >
>> > Sounding like I would be an idiot not to order one ;-) Wonder if my 
>> wife will chew me another one for ordering more stuff :-( I already 
>> bought an auto tuner and a narrow CW filter for that IC-735 that I 
>> bought a month or so ago ;-)
>> >
>> > decisions decisions...
>> >
>> > Mike
>> > WE0H
>> > /16
>> >
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>>
>>
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