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Re: nouveau 75 Dave Cripe/Voltage Checks
w9ran
On 10/19/2019 8:45 PM, nm0s_qrp via Groups.Io wrote:
I did a quick check of the power transistors on the main PCB, since the SMT parts are too small to probe safely. With 12.6v supplied, the transmitter keyed, and no modulation: Hi Dave, Thanks for that data, but after comparing with my non-working Nouveau 75 I wonder if you could confirm one of those voltages. If the drain of Q12 is truly at 0 volts with the PTT keyed, there would be zero resting carrier output, and I'm sure that's not right (even controlled carrier rigs have some resting carrier). I measure 10.5 volts on Q12's drain with the PTT keyed, which produces a resting carrier of 3.25 watts and that seems to be in the right ballpark. The problem I have is that Q11 gets very hot very fast when any modulation is applied and inadequate modulation - something isn't right in the class G modulator. Here's what those voltages measure on my Nouveau 75: G D S Q3 9.6 10.5 13 FQP7P06 Q11 7.5 0 12.7 FQP7P06 Q12 3.8 10.5 .2 IRF510 This modulator never has worked right. After the first Q11 melted down, I went ahead and replaced all the big FETs, but that did not fix what's wrong. The BJTs in the modulator have junctions at least, I don't know of a good way to test the small FETs but at least they aren't shorted. It looks like something is messing up the bias of Q11 - if the above voltages help you to point me toward the right area of the modulator circuit, I can make additional measurements and do SMT repair. I just haven't yet had time to build a spice model for that bootstrapped class G modulator to help me understand how it works. Thanks and 73, Bob W9RAN
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Re: 40 Meter Net announcement
Thanks Don I guess my signals are landing some where! Thanks for The report
On Wed, Oct 30, 2019 at 8:41 PM W6BOW via Groups.Io <DBuckter=aol.com@groups.io> wrote:
--
Check out the 4SQRP website at 4sqrp.com
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Re: For sale shortwave portable
I am away from the house this week!
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On Thursday, October 31, 2019, 16:12, bobby rolph <rolph981@...> wrote:
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Re: For sale shortwave portable
KB9BVN - <kb9bvn@...>
I have a DX 398 I bought from the shack almost 20 years ago and it is one of the best and most durable radios I have ever owned. It mostly sits in the bedroom proving local FM reception but from time to time I connect it to the HF antenna and do some SWLing. Great radio Bobby!
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Someone will be happy with it. de KB9BVN
On 10/31/2019 5:12 PM, bobby rolph wrote:
I have a Radio Shack DX 398 portable radio for sale. This is the very same radio as the Sangean 909. It is loaded with many features and is in very good condition. It can work on AM,FM,CW AND SSB. The antenna is in good condition. It comes with a carry pouch, manual and wall wart. I am asking $70 shipped to lower US 48. If you are interested or have any questions contact me direct at rolph981@... <mailto:rolph981@...>. Thanks for looking, 73
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For sale shortwave portable
bobby rolph
I have a Radio Shack DX 398 portable radio for sale. This is the very same radio as the Sangean 909. It is loaded with many features and is in very good condition. It can work on AM,FM,CW AND SSB. The antenna is in good condition. It comes with a carry pouch, manual and wall wart. I am asking $70 shipped to lower US 48. If you are interested or have any questions contact me direct at rolph981@.... Thanks for looking, 73
Bobby Rolph KB4QNR
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4SQRP DELTA MIKE ROMEO NET
Robert
TONIGHT'S TOPIC WAS HEATH KIT RIGS, DID YOU EVER HAVE ONE? TONIGHT'S CHECK INS NK8O CHARLES WG5F ED W8NWA MIKE N4KV JOHN AC0BQ JOHNNY WW9H JIM N0TGR DICK WA9BNZ BILL KB0MOE DON N0SO MIKE GREAT NET THANKS TO ALL WHO CHECKED IN TO THE NET WHERE SUNSPOTS JUST DON'T MATTER MUCH HI HI 73'S BERT N0YJ
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40 AND 80 METER NET REPORT
Ge All:
Thanks for the nice nets tonight. I was using the 4 sqrp Club call WQ5RP in Bart Lawson's memory tonight. He was the trustee of the club call as well as good friend and will be missed by many. -- Check ins were: 40 metersWB0CFF CARL WA9PWP PAUL K4ABC JIM 80 M check in's were: WA9PWP PAUL NK80 CHAS N0YJ BERT WB0CFF CARL and W0PWE JERRY at 2 watts! Nice job Jerry! Thanks all for helping me remember a old friend that became SK las week. Rest in peace Bart! 72 Johnny AC0BQ QRP....."More smiles per Watt" 72 JOHNNY AC0BQ ..
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Re: 40 Meter Net announcement
W6BOW
Dear All,
Re: 4SQRP 40M net 10/30/2019
(Mail Read Via K3FEF WebSDR.)
"WQ5RP" (AC0BQ) Solid copy.
"K4ABC" Solid copy.
"WA9PWP" No copy.
"In Memory of Bart Lawson who became SK last week."
Respectfully,
Don
W6BOW SF CA USA
-----Original Message-----
From: Johnny Matlock <jomatlock@...> To: 4sqrpio <4SQRP@groups.io> Sent: Wed, Oct 30, 2019 3:42 pm Subject: [4SQRP] 40 Meter Net announcement Terry is busy tonight so
I will call the 40 meter net at 8:00
PM central Time.
I will use the Club call WQ5RP
In Memory of Bart Lawson who became SK last week.
He was the Trustee for the Club Call.
Hope to cu either on 40 or 80 meters tonight!
72
Johnny AC0BQ
Check out the 4SQRP website at 4sqrp.com
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Wednesday Evening 40 and 80 meter Nets - Wed, 10/30/2019
#cal-notice
main@4SQRP.groups.io Calendar <noreply@...>
Wednesday Evening 40 and 80 meter Nets When: Where: Organizer: Description:
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Re: Nouveau 75 Power Output
Charles W. Powell
I was worried that my Nouveau 75 was not putting out enough power because it only showed about 3 watts of carrier on my scope. But I finally picked up the mic today and jumped into the end of a QSO and get a 5x9 report from Fort Scott, just shy of 50 miles south as the crow flies. My antenna is probably too high for ideal NVIS, but it did work. The audio is apparently quite good with the limiter lighting the panel LED on high peaks.
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I have to admit, I was more than excited when the radio worked so well. 72, Charles - NK8O
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40 Meter Net announcement
Terry is busy tonight so I will call the 40 meter net at 8:00 PM central Time. I will use the Club call WQ5RP In Memory of Bart Lawson who became SK last week. He was the Trustee for the Club Call. Hope to cu either on 40 or 80 meters tonight! 72 Johnny AC0BQ Check out the 4SQRP website at 4sqrp.com
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Upcoming Event: Wednesday Evening 40 and 80 meter Nets - Wed, 10/30/2019 8:00pm-9:00pm
#cal-reminder
main@4SQRP.groups.io Calendar <main@...>
Reminder: Wednesday Evening 40 and 80 meter Nets When: Wednesday, 30 October 2019, 8:00pm to 9:00pm, (GMT-05:00) America/Chicago Where:40 and 80 Meters Organizer: jomatlock@... Description: The 40 Meter Net will be at 8:00 pm DST central time on 7.122 +-. QRM
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Re: Nouveau 75 Power Output
I'm using an end fed wire. One guy has a full size 80m dipole and the other was only about 5 miles away with a Tarheel on the mobile. The guy that could hear me on the 7300 was the guy with the Tarheel. The guy with the full size 80m dipole couldn't hear me on either radio.
My end fed wire is short for 80m at 44' but I nearly have my Worked All States on 80m SSB phone but that's with 100w.
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Re: Nouveau 75 Power Output
Dave Benson
Curt-
>I tried to make a local contact with it and the two guys couldn't hear
me. I used my IC-7300 on full power (25w) and the same antenna and they
said they could barely make me out.< If they're local... and not hearing you.... I'll ask if your antenna is a vertical. Jim- W1PID- and I couldn't even hear each other on CW when I used a vertical. We're 30 miles apart. Now that I have a dipole up, we're 20-over-S9 on 75M at 10W PEP. 73- Dave
On Wed, Oct 30, 2019 at 10:31 AM Curt M. <WU3URADIO@...> wrote: Has anyone done any testing on the power output of their Nouveau 75?
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Nouveau 75 Power Output
Curt M.
Has anyone done any testing on the power output of their Nouveau 75?
I have an basic inexpensive DIamond SX200 meter which I suspect isn't perfect across all of the bands for which it was designed for. If I set the switch for PEP I getting a carrier of 4w. If I set the mic gain to where it just starts to turn the LED on and I give fairly loud "Hello!" into the mic I think the meter jumps up to around 10-12w. If I turn the mic gain up and in the same tone say, "Hello!" it goes to about 18w. I was kind of thinking that with the mic gain set correctly I would get a little higher output than the 10-12w that I am seeing. Again, it could be the meter but that's all that's I have. My Bird 43 without the PEP option will probably not give me a good reading. Actually I checked the carrier with it and using a brand new 25w slug and it was about 2.5w. What's everyone else's experience been with power tests? Not sure if mine has an issue or not. The receive clarity is excellent. I tried to make a local contact with it and the two guys couldn't hear me. I used my IC-7300 on full power (25w) and the same antenna and they said they could barely make me out. Curt M.
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Re: Nouveau 75
Charles W. Powell
Have you done any transmitting? Maybe we should set up a net to see if we can make any contacts.
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73, Charles - NK8O
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Nouveau 75
Bill VanKirk
Having a lot of fun with my Nouveau 75. It makes a great receiver for WTWW on 5.085 as well!
73 Bill W0PT
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Upcoming Event: Wednesday Evening 40 and 80 meter Nets - Wed, 10/30/2019 8:00pm-9:00pm
#cal-reminder
main@4SQRP.groups.io Calendar <main@...>
Reminder: Wednesday Evening 40 and 80 meter Nets When: Wednesday, 30 October 2019, 8:00pm to 9:00pm, (GMT-05:00) America/Chicago Where:40 and 80 Meters Organizer: jomatlock@... Description: The 40 Meter Net will be at 8:00 pm DST central time on 7.122 +-. QRM
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Re: Nouveau 75 frequency selection
Curt M.
As cornhusker said, I would check the encoder. Be sure that when you pushed the encoder into the circuit bard that one of the legs didn't bend under. Typically you would notice that when you solder the encoder in place but anything is possible. I would also check the solder joints on the encoder and make sure they are all soldered and that none are bridged.
Curt M.
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Re: W0IIT Test
Sorry to hear of Bart's passing. We had crossed paths a few times when
I lived in Enid in the '90s. R.I.P., Bart, and may the propagation be better there than here. 72, Nate -- "The optimist proclaims that we live in the best of all possible worlds. The pessimist fears this is true." Web: https://www.n0nb.us Projects: https://github.com/N0NB GPG fingerprint: 82D6 4F6B 0E67 CD41 F689 BBA6 FB2C 5130 D55A 8819
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