Search found 43 matches

by vk7jj
Thu Feb 22, 2018 10:28 pm
Forum: SDR Antennas
Topic: HF pre-selector
Replies: 18
Views: 14805

Re: HF pre-selector

To add to Tech_Support's suggestion of using a "ham" antenna tuner, I use an old antenna tuner (commonly known as an ATU) but instead of connecting it in series with the feedline, I use it as a tuneable shunt to ground. If the ATU is simply inline as normal then it works fine but it only p...
by vk7jj
Fri Feb 16, 2018 10:47 pm
Forum: Code Corner
Topic: Does SDRuno support IPC?
Replies: 0
Views: 80

Does SDRuno support IPC?

Disorganised thinking out loud... I'm an experienced node.js backend and web frontend programmer. Instead of my current node.js running on a Raspberry Pi communicating via serial (and audio streams) with SDRuno to provide a Pi hosted web interface to SDRuno for scanning and remote audio using UDP an...
by vk7jj
Fri Feb 16, 2018 9:18 am
Forum: New Users' experiences
Topic: Thumps up to RSP1A and the support team !
Replies: 2
Views: 234

Re: Thumps up to RSP1A and the support team !

Hi avk, you sound a bit like I felt soon after my purchase. Instant delight in the hardware - mouthwatering to think a little black box is about to deliver you effectively zero to 2GHz with a calibration accuracy of a dB or two and direct readout of SNR, truly excellent oscillator stability and accu...
by vk7jj
Sun Dec 24, 2017 2:13 am
Forum: General
Topic: RSP1A: wobbling spurs around 2.335MHz * n
Replies: 17
Views: 2648

Re: RSP1A: wobbling spurs around 2.335MHz * n

Just for laughs I show my Hammy Hambone solution for the spur in the 40m band. It's a 47 Ohms 1206 SMD resistor connected to 5V and glued to the offending chip. The ~0.5 W dissipation creates enough heat to move the spur down to 6.92 MHz. Merry Christmas and a happy new year! 2017-12-23_14-06-20_v1...
by vk7jj
Thu Dec 21, 2017 9:17 pm
Forum: New Users' experiences
Topic: RSP2 frustration on Mac
Replies: 33
Views: 10404

Re: RSP2 frustration on Mac

For those of you running SDRuno in a virtual environment like mine - is that lag present, or is that an issue with SDR#? Hi Jim. Like you I run VMWare Fusion with a Windows 10 VM on an iMac and SDRUno performs really well. In my experience the audio delay is no different from running any of the gre...
by vk7jj
Sun Dec 17, 2017 8:16 am
Forum: SDRuno
Topic: Figured out the "Stuck in Seems like LO LOCK Mode" problem
Replies: 13
Views: 1679

Re: Figured out the "Stuck in Seems like LO LOCK Mode" problem

Not sure I follow you. The LO lock and IF settings are unrelated. LO lock will activate any time the buttons are used to change preset bands. However, it can normally be deactivated and SDRUno behaves as expected. This is independent of the zero or low IF setting. Or is there more to your actions c...
by vk7jj
Sat Dec 16, 2017 10:00 am
Forum: SDRuno
Topic: Figured out the "Stuck in Seems like LO LOCK Mode" problem
Replies: 13
Views: 1679

Re: Figured out the "Stuck in Seems like LO LOCK Mode" problem

For me, the LO LOCK problem, if it's the same one, appears to be caused by - activating Low-IF from the Main Settings dialog box - changing bands (using the keypad ham band buttons or via CAT) From that point on all subsequent band changes bring up the LOCK message, yet Zero-IF shows up in Main Sett...
by vk7jj
Thu Dec 14, 2017 2:24 am
Forum: SDRuno
Topic: sdrUno CAT
Replies: 1
Views: 428

Re: sdrUno CAT

edit: sorry about the spellers and camelcase habit when rendering sdrUno etc, plus baud error in the post above, tried to edit the post but got into some sort of loop asking me for "at least two poll options" and had to back out. Anyway, did a bit more digging during lunch and see that AN;...
by vk7jj
Wed Dec 13, 2017 10:47 pm
Forum: SDRuno
Topic: sdrUno CAT
Replies: 1
Views: 428

sdrUno CAT

Hi; A few thoughts about sdrUno 1.2 CAT • Bug? The IF data that is sent by sdrUno every second by default is sent three times every time it's sent, which appears to be a bug, ie. from my debug console I get three x IF00007090000 in one hit, accompanied by a single SM00002, whereas a single IF would ...
by vk7jj
Wed Dec 06, 2017 5:43 am
Forum: General
Topic: RSP1A: wobbling spurs around 2.335MHz * n
Replies: 17
Views: 2648

Re: RSP1A: wobbling spurs around 2.335MHz * n

I don't listen much above 160 m these days, but I think the upper roll-off must be pretty slow as MW and 160 both seem just as lively as ever. Hi again Andy, I must try your approach, extending the bottom rolloff downwards so as to preserve general HF operation is all I've done. Thanks for your com...

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