The real question is/was what value of zener.
> On 08/17/2022 9:45 AM Andy Durbin wrote:
>
>
> "The latest revision of the schematic for the KPA500 TR Switch shows a Zener
> diode at the gate of Q4 in place of R3, the 100K resistor previously."
>
> What is the latest revision? I have Rev D
In the attached email Frank W2yk wrote the 1A2R from 404A. I only find a 403.
Please advise
Ralph, w7HSG/AFA9RT
> On 04/01/2022 9:48 AM Rick Bates, NK7I wrote:
>
>
> It does. But you HAVE to remember to send a dit on each band change so
> the amp knows where you are.
>
> 73,
> Rick NK7I
>
Hi
I had a similar situation here in Tucson AZ My spectrum analyzer,a Tek 492
showed groups of carrier like indications 10-20 db above the noise floor.
First think I thought "Grow Lights" I was told that the osculator in a grow
light is about 2.3 Mhz. The interference looked like it was
Wayne et all
My only concern before I order a K4 is how it will work with two high power
AM transmitters near me.
10KW day,1kw night KVOI south of me and a 50kw day only KUAT AM north of me.
At some time, I will need to borrow or rent a k4 for a week and see how it
behaves
The majority of my
I can not use the digital modes because I need to switch to Upper SB after the
last
electron has been sent in the digital mode and the reverse. Call is instant
break in
between USB voice and digital M110 A
This could be a deal breaker on a K4 purchase.
Ralph, W7HSG/AFA9rt
> On September 20,
A feature that should be included in the "K4" is a software addition that will
allow one to
send digital via the rear audio in connector while operating USB (upper
sideband) with the
front mike. I use the current K3+ on AirForce/Army Mars. I need to be able to
switch from
digital (M110A) to
Mike
When you get a reply, please share. I use a KPA500 with a KAT500 on Mars freq
from 2-3.5 Mhz, 4-7.5 mhz
and 8.5 to 14Mhz. I have never noticed any problems but I have never checked
anything other
does it work and stay within its operational numbers.
Ralph, W7HSG/AFA9RT
> On August 26,
Testing to see if My email shows up.
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Thanks Joe
I am more concerned if the SDR front end will be overloaded.
The spurs are a work in progress. If it rained once a week,
I would not have any spurs.
Ralph
> On July 23, 2019 at 12:31 PM "Joe Subich, W4TV" wrote:
>
>
>
> On 2019-07-23 12:54 PM, RALPH TURK
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Ralph, W7HSG
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> Greetings
>
>
> I live between 2 AM Broadcast stations. First Station KVOI 1030 AM @ 10 KW
> day, 1kw night 2 miles south.
>
>
> Second StationKUAT 1550 AM @ 50KW day time only. No night time power 2
> miles north.
>
>
> My question is how well will the K4 perform in this
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Raj
Check the RJ45 jack very carefully. One of the wires might have bent slightly
and shorts out the adjacent wire. I have found that a few times when repairing
computer problems for friend & family
Ralph, W7HSG/AFA9RT
> On July 19, 2019 at 12:32 PM Rajiv Dewan wrote:
>
>
> Hello all,
Will the k4 with Mars software transmit from 1.8 through 30 Mhz with no band
stop
like the K3 has at the IF freq?
Ralph, W7HSG/AFA9RT
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Help:
Wes
It has been snowing since about 7am just across the Mtns in Cortaro.
Ralph, W7HSG
> On February 22, 2019 at 7:18 AM Wes wrote:
>
>
> This week it's rodeo days in Tucson. A favorite of the snowbirds. This
> morning
> however, it seems the snowbirds brought the snow with them. Yep,
SHOW HOW/EXPLAIN ETC. I AM VERY INTERESTED.
RALPH,AFA9RTI AM NOT SHOUTING KEY BOARD STUCK
> On February 12, 2019 at 7:06 PM Ken K6MR wrote:
>
>
> “Actually, I suppose one could drive 2 KPA500's
> from one K3 and sum the output for a virtual KPA1000.”
>
>
>
> Yes you can. I have been
Harbor Freight Hand held IR laser thermometer is your best friend.
Hold trigger, aim visible light, read surface temperature.
Ralph ,W7HSG
> On February 6, 2019 at 8:59 PM Mike K8CN wrote:
>
>
> Thanks, Keith, for the pointer on audio IC U1 on the DSP board. Visual
> inspection shows no
What time & Freq is the Elecraft SSB net on?
Ralph,W7HSG
520-444-6610
Ralph S. Turk,
> On February 2, 2019 at 10:51 PM kevinr wrote:
>
>
> Good Evening,
>
> Tomorrow we are due for a snow storm. Somewhere between six and
> eight inches before it ends. Hopefully it will not
Just a dumb question. Have you checked the DC to the K2 either battery or
power suply.
Ralph S. Turk, W7HSG
520-444-6610
> On February 2, 2019 at 1:28 PM mustang65 wrote:
>
>
> Thanks for answers.
> The symetrix output impedance is 200 ohm and it is recommended to not load
> it
> lower
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