Search found 66 matches

by w9ac
Thu May 16, 2019 2:08 pm
Forum: Microphones, Speakers & Audio Hardware
Topic: Presonus Studio 192 Mobile
Replies: 46
Views: 7523

Re: Presonus Studio 192 Mobile

w-u-2-o wrote:Is it working well, Paul? Does the resampler Var ratio stay at 1.0?

Well. I still have to make a new BNC jumper for the second output. I'll try it this weekend and report back.

Paul, W9AC
by w9ac
Thu May 16, 2019 3:15 am
Forum: Microphones, Speakers & Audio Hardware
Topic: Presonus Studio 192 Mobile
Replies: 46
Views: 7523

Re: Presonus Studio 192 Mobile

Received the Bodar dual GPSDO this afternoon. Setup is mostly easy but programming the frequency of the second output requires a trick that's not obvious from the installation instructions. For example, programming 10 MHz and 96 kHz simultaneous outputs isn't initially possible as the programming so...
by w9ac
Sat May 11, 2019 12:11 am
Forum: Microphones, Speakers & Audio Hardware
Topic: Presonus Studio 192 Mobile
Replies: 46
Views: 7523

Re: Presonus Studio 192 Mobile

Scott,

Now it all makes sense. I didn't realize the Bodnar unit had two independent outputs.

Thanks for the info.

Paul, W9AC
by w9ac
Fri May 10, 2019 1:23 pm
Forum: Microphones, Speakers & Audio Hardware
Topic: Presonus Studio 192 Mobile
Replies: 46
Views: 7523

Re: Presonus Studio 192 Mobile

The Presonus 192 Mobile audio interface arrived and is now working well with my StudioLive 16R mixer under Presonus' Universal Control software. I've read through the owner's manual but I'm still at a loss concerning how Word Clock can be used with my ANAN 7000DLE and 192 Mobile. Specifically, what ...
by w9ac
Thu May 02, 2019 10:47 am
Forum: Microphones, Speakers & Audio Hardware
Topic: Presonus Studio 192 Mobile
Replies: 46
Views: 7523

Re: Presonus Studio 192 Mobile

Interesting, I looked through the on-line manual but didn't see the format for the clock input. Is it PPS, 10 MHz, or...?

Paul, W9AC
by w9ac
Thu May 02, 2019 1:34 am
Forum: Microphones, Speakers & Audio Hardware
Topic: Presonus Studio 192 Mobile
Replies: 46
Views: 7523

Presonus Studio 192 Mobile

I'm looking to replace a Behringer UMC2020HD audio interface with a Presonus Studio 192 Mobile unit. Since acquiring a Presonus StudioLive 16R digital rack mixer, I really like the Presonus build quality. For those of you using this device with either PSDR or Thetis VAC, have the Presonus drivers be...
by w9ac
Mon Apr 22, 2019 7:18 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: 8000DLE internal noise - (switcher?)
Replies: 7
Views: 1989

Re: 8000DLE internal noise - (switcher?)

Now that Scott was kind enough to move my post into the correct section, I can see that my 8000 is not alone in having this issue. In my case, at least the spikes are outside the amateur bands with the exception of a minor one at 14.031 . (thereabouts, it slides around) However:- the whopper at ~20...
by w9ac
Mon Apr 22, 2019 2:46 am
Forum: Thetis
Topic: Thetis QSK and the new default low-latency filters
Replies: 9
Views: 1886

Re: Thetis QSK and the new default low-latency filters

John, What you're describing shows just how good performance is with the new QSK changes. It's oh-so-simple to blank audio for a period of time in order not to deal with it. Apart from Elecraft, that's what every commercial manufacturer does. You're right about the slight ringing. My default CW filt...
by w9ac
Mon Apr 22, 2019 2:20 am
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Anan 7000DLE Mk-II PA output.
Replies: 10
Views: 3279

Re: Anan 7000DLE Mk-II PA output.

Volker: I suspect this is just a sloppy tolerance issue with the impedance matching filter components for 17 and 10 meters. The distortion is the result of having to over-drive the PA into its non-linear region in order to increase the output. When I get a chance later, I'm going to put a scope on ...
by w9ac
Sun Apr 21, 2019 8:24 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: 7000DLE QSK Modifications
Replies: 6
Views: 1571

Re: 7000DLE QSK Modifications

Hi Paul, Have you had it on SSB yet? Have you measured PureSignal two-tone IMD performance from your LDMOS amp when bypassing the 7000 PA? 73, Bryan W4WMT Averaging about -65 dBc with PS engaged and -35 dBc disengaged. That's at 1200W from a 1500W water-cooled eb104.ru amp. I don't run it higher. M...
by w9ac
Sun Apr 21, 2019 2:14 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Unstable, wide, nasty spur
Replies: 24
Views: 5752

Re: Unstable, wide, nasty spur

For those not seeing the wide spur on 160m with Orion MKII, expand the display a bit to 2100 kHz. Mine occurs at 2020 kHz, outside the 160m band. The root switching fundamental appears to occur at approximately 400 kHz. Switch the band selector to "L/MW." With the antenna disconnected, loo...
by w9ac
Sun Apr 21, 2019 12:29 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: 7000DLE QSK Modifications
Replies: 6
Views: 1571

Re: 7000DLE QSK Modifications

Chris, The idea for the Aromat RSD-12V relay came from the JA manufacturers that used it for T/R in several transceiver models. The initial design was developed by Panasonic/Matsushita. I typically see the Matsushita-branded relays on the used market in plastic encapsulated cases. When Aromat purcha...
by w9ac
Sat Apr 20, 2019 1:17 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: 7000DLE Tandem RCA Jack Mounting
Replies: 1
Views: 797

7000DLE Tandem RCA Jack Mounting

The attached photo shows a set of #4 tapping screws added to hold the tandem RCA jacks in place on the back panel. Installation was very easy. A set of plastic mounting holes pass completely through. So, once the back panel is off, it’s simply a matter of drilling through the mounting holes from the...
by w9ac
Sat Apr 20, 2019 1:10 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: 7000DLE QSK Modifications
Replies: 6
Views: 1571

7000DLE QSK Modifications

I recently loaded P2 v.1.9 on my 7000DLE and it's now a real CW machine running under Thetis 2.6.5. QSK performance is awesome. A big thanks to the development team. This feature came in time for a mod I started last week and completed today. Back in 2016 I made a similar mod to a 200D. In the attac...
by w9ac
Sat Feb 23, 2019 8:15 pm
Forum: Apache Labs News
Topic: ANAN-7000DLE MKII now available without internal PC
Replies: 10
Views: 5245

Re: ANAN-7000DLE MKII now available without internal PC

The PIN diode T/R switching circuit is easily implemented. However, to do it right means upconverting +12V DC to over 100V so the receive PIN diodes can be reverse-biased during transmit. Otherwise, a high SWR at the RF output port (e.g., accidental open or short) will cause the receive PINs to cond...
by w9ac
Mon Feb 04, 2019 1:05 pm
Forum: Apache Labs News
Topic: ANAN-7000DLE MKII now available without internal PC
Replies: 10
Views: 5245

Re: ANAN-7000DLE MKII now available without internal PC

Not a fan of that case style, but wonder what they did to get to these 2 listed improvements: 2. PA board improvements for higher duty cycle, 100% ICAS duty cycle supported. 3. Tx Signal generation redesigned to improve SNR at low power levels. I don't like the larger size either, but I suppose any...
by w9ac
Tue Jul 03, 2018 11:35 am
Forum: Thetis
Topic: Thetis ETA for release ?
Replies: 30
Views: 11966

Re: Thetis ETA for release ?

>"When the last thing that is mentioned (that I've heard anyway) is that it would likely be available in a few weeks yet months later there is still nothing available... " We should always remember that the software side, and likely some or even much of the hardware development, is a volu...
by w9ac
Fri Dec 01, 2017 12:34 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: 7000 fan noise
Replies: 10
Views: 3441

Re: 7000 fan noise

To me, the noise is noticeable but not annoying. It may be worthwhile looking at a premium Noctua replacement. Noctua fans are designed to produce minimum rumble and noise-generating turbulence while still providing rated air-flow volume. Last year, I replaced a very noisy cooling fan on the back of...
by w9ac
Fri Dec 01, 2017 3:46 am
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: 7000 fan noise
Replies: 10
Views: 3441

Re: 7000 fan noise

I noticed the same after my 7000DLE arrived today. The fan is somewhat noisier than I experience with my 200D, but I do feel more air flow coming out of the rear vent holes. Unlike the 200D, the 7000DLE's case runs much cooler during transmit and so far, shows no sign of needing an external cooling ...
by w9ac
Wed Nov 29, 2017 12:03 pm
Forum: Microphones, Speakers & Audio Hardware
Topic: 7000 speaker jack question
Replies: 3
Views: 2833

Re: 7000 speaker jack question

One option is to utilize an open collector (OC) output to control a SPDT relay with contacts in series with the speaker leads. That requires going into PSDR mRx Setup each time you want to invoke a change. I'll be adding an Arduino Nano microcontroller to my 7000DLE to minimize relay noise in CW mod...
by w9ac
Sun Nov 19, 2017 1:22 pm
Forum: piHPSDR
Topic: Bluetooth Mouse and Keyboard Sluggish
Replies: 9
Views: 4276

Re: Bluetooth Mouse and Keyboard Sluggish

The primary benefit is when the openHPSDR program isn't running. IOW, during file upgrades and other system maintenance. Before, I couldn't access the internet to download a file AND run the Bluetooth devices without the stuttering problem. I had to disable WiFi for the Bluetooth devices to operate ...
by w9ac
Sun Nov 19, 2017 5:37 am
Forum: piHPSDR
Topic: Bluetooth Mouse and Keyboard Sluggish
Replies: 9
Views: 4276

Re: Bluetooth Mouse and Keyboard Sluggish

Scott, I can confirm the external WiFi USB stick is a good solution. I purchased a TP-LINK WN725N Wireless N Nano USB Adapter, Price was about USD $10. It's a tiny USB plug with a very low profile. When the TP-LINK device is inserted in the pihpsdr's USB port, a second WiFi port is created and is na...
by w9ac
Sun Oct 29, 2017 12:59 pm
Forum: piHPSDR
Topic: Bluetooth Mouse and Keyboard Sluggish
Replies: 9
Views: 4276

Re: Bluetooth Mouse and Keyboard Sluggish

Good suggestion, Scott. I'll order one and give it a try.

Paul, W9AC
by w9ac
Sun Oct 29, 2017 3:12 am
Forum: piHPSDR
Topic: Bluetooth Mouse and Keyboard Sluggish
Replies: 9
Views: 4276

Re: Bluetooth Mouse and Keyboard Sluggish

Turns out that RaspberryPi does not work well with Bluetooth and WiFi with both simultaneously engaged. So, the solution at the moment is to only enable WiFi when needing Internet access (e.g., file downloads). Then disable WiFi for normal operation as an Ethernet cable is used between PiHPSDR and t...
by w9ac
Sun Oct 29, 2017 2:52 am
Forum: piHPSDR
Topic: Bluetooth Mouse and Keyboard Sluggish
Replies: 9
Views: 4276

Re: Bluetooth Mouse and Keyboard Sluggish

Fixed the Bluetooth mouse with this command placed at the end of /boot/cmdline.txt file:

usbhid.mousepoll=0

However, the keyboard suffers from the same problem after a period of inactivity and I don't see a fix for it.

Paul, W9AC
by w9ac
Sun Oct 29, 2017 2:17 am
Forum: piHPSDR
Topic: Bluetooth Mouse and Keyboard Sluggish
Replies: 9
Views: 4276

Bluetooth Mouse and Keyboard Sluggish

I'm using my Apache PiHPSDR with a Bluetooth keyboard and mouse. After 1-2 seconds of inactivity, it always takes another couple seconds for Bluetooth to wake up. I have to repeatedly move the mouse to get a response. Same with the Bluetooth keyboard. Clues?

Paul, W9AC
by w9ac
Tue Aug 01, 2017 11:35 am
Forum: PureSignal Operations (PowerSDR & Thetis)
Topic: Electronic bias systems vs. PureSignal
Replies: 18
Views: 9344

Re: Electronic bias systems vs. PureSignal

Chris, If your plan is to keep the Alpha 89 for awhile, you may want to keep a small stock of Tx PIN diodes. The Microsemi/MACOM UM4006D is the correct OEM part number for the 4-40 threaded stud version. Richardson RF is closing them out at $24.75 ea. This is much less than original OEM pricing and ...
by w9ac
Mon Jul 31, 2017 6:27 pm
Forum: PureSignal Operations (PowerSDR & Thetis)
Topic: Electronic bias systems vs. PureSignal
Replies: 18
Views: 9344

Re: Electronic bias systems vs. PureSignal

>"There seems to be several versions of the Alpha 89 out there. Mine is a 1994-vintage one (with the ETO logo) and has no dynamic bias manipulation..." Chris, Nice amp and I'm sure you enjoy using it. It's a shame that more of the 89 units weren't produced. As you point out, the 89 and 87A...
by w9ac
Sun Jul 30, 2017 7:16 pm
Forum: PureSignal Operations (PowerSDR & Thetis)
Topic: Electronic bias systems vs. PureSignal
Replies: 18
Views: 9344

Re: Electronic bias systems vs. PureSignal

>"John's (VY2WW) post of 10 May above explains everything. While not EBS, what the design does causes a dramatic memory effect that the PureSignal algorithm cannot keep up with, and it thereby enters a state whereby PS and the 89 fight each other..." Sorry Scott, but merely saying that &qu...
by w9ac
Sun Jul 30, 2017 1:57 pm
Forum: PureSignal Operations (PowerSDR & Thetis)
Topic: Electronic bias systems vs. PureSignal
Replies: 18
Views: 9344

Re: Electronic bias systems vs. PureSignal

"the 89 DOES indeed play games with bias..." I don't understand what that means. The Zener diode value change that Brad describes does nothing more than to adjust plate idling current into greater conduction over the RF cycle, moving the class of amplification further into AB and away from...

Go to advanced search