Search found 30 matches

by franko
Sun Sep 09, 2018 4:07 pm
Forum: General
Topic: Test to determine if receive damaged?
Replies: 6
Views: 392

Re: Test to determine if receive damaged?

A simple test using an $12 noise generator and two home made attenuators is described here: https://www.sdrplay.com/community/viewtopic.php?f=5&t=3352 Great post, thanks for the link. I ordered one of the noise sources and will try this out when it arrives (probably in 2-3 weeks). What design d...
by franko
Sun Sep 09, 2018 12:00 am
Forum: General
Topic: Test to determine if receive damaged?
Replies: 6
Views: 392

Re: Test to determine if receive damaged?

Contact a 2-Way shop in your area, ask if they can use the service monitor they all have to test the rigs sensitivity. Thanks for the suggestion. Is there a more specific name for the service monitor equipment? I bought the RSP's from a Ham Radio Outlet, so I could ask them. Then again, it also occ...
by franko
Sat Sep 08, 2018 8:25 pm
Forum: General
Topic: Test to determine if receive damaged?
Replies: 6
Views: 392

Test to determine if receive damaged?

I inadvertently left an SDRplay RSPduo running monitoring FT8 on 20m while transmitting on that band on a nearby rig. The RSPduo used a mag loop antenna about 37 feet (11 meters) away from the transmitting antenna, a Buddipole coil-loaded dipole. The transmitter used ~80 watts and transmitted for ab...
by franko
Sat Sep 01, 2018 1:42 pm
Forum: SDRplay related
Topic: Protecting RSP from nearby transmitter
Replies: 6
Views: 607

Re: Protecting RSP from nearby transmitter

Thanks, Jukka -- that sounds very likely.
by franko
Sun Aug 26, 2018 11:21 pm
Forum: SDRplay related
Topic: Protecting RSP from nearby transmitter
Replies: 6
Views: 607

Re: Protecting RSP from nearby transmitter

I just tried a test transmission to check this out. I had two RSPduo's connected to a Windows 7 PC with a total of six VRX's running to monitor the 80m, 40m, 30m, 20, 17m and 15m FT8 bands, along with an instance of WSJT-X for each one. The RSPduo's shared a 130-foot end-fed antenna through a Mini-C...
by franko
Sun Aug 26, 2018 4:21 pm
Forum: SDRplay related
Topic: Protecting RSP from nearby transmitter
Replies: 6
Views: 607

Re: Protecting RSP from nearby transmitter

Thanks very much for the information. It is interesting to know that an RSP can be damaged from strong, nearby RF energy if it is connected to an antenna, even if it is powered down.
by franko
Sat Aug 25, 2018 7:28 pm
Forum: SDRplay related
Topic: Protecting RSP from nearby transmitter
Replies: 6
Views: 607

Re: Protecting RSP from nearby transmitter

BTW I tried to edit the post to add the following information, but was unable to do so because the forum told me I needed to "add at least two poll options" ?): (Frequency range involved is he HF amateur bands, power =<100w, distance ranges from a few feet (from transmitter and its coax) t...
by franko
Sat Aug 25, 2018 6:55 pm
Forum: SDRplay related
Topic: Protecting RSP from nearby transmitter
Replies: 6
Views: 607

Protecting RSP from nearby transmitter

I have several SDRplay RSP's (an RSP2 and several RSPduo's) that I'm setting up for monitoring purposes. It isn't feasible to run them all through a transmit-receive switch to protect them when I'm doing a transmitting session. However, I'd like to leave the RSP's running rather than powering them d...
by franko
Thu Aug 23, 2018 11:27 pm
Forum: SDRuno
Topic: Reinitialize SDR without closing/restarting SDRUno?
Replies: 0
Views: 238

Reinitialize SDR without closing/restarting SDRUno?

Occasionally when using SDRUno v1.23 with an RSPduo, I need to stop the receiver in SDRUno's Main window and unplug the USB connection between the RSPduo and the PC to make a hardware adjustment. If I do this and then reconnect the USB cable and press "Play!" in SDRUno's Main window, I get...
by franko
Mon Aug 13, 2018 12:54 am
Forum: General
Topic: Mac or Windows?
Replies: 9
Views: 822

Re: Mac or Windows?

I'd say it depends on which operating system you're most comfortable with. Currently I'm using macOS as my ham radio computer (running WSJT-X for transmit/receive, keeping my log files, etc), while I use a Windows PC as my shortwave listening computer (running SDRUno). I also use Linux for other rad...

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