Work on the Sentry 5 transceiver is progressing well. It's been a long project as the hardware, firmware and the Sentinel SDR program have to work together. The final tests of the prototype transceive

One of the problems with the Yahoo group is that we lost the facility to search through the posts. I'm going through my email to find some of the replies I sent to questions about the SDR-4+ receiver

This was a copy of a set-up of a SDR-4+ receiver on a Mac. It was pasted out another email so I've lost who sent it to me: "Re: SDR-4+ and Mac OS X SDR-4+ now up and running with DSP Radio V1.3.5(1) T

The Mac OS X setup came from Gary G0DNI. Regards, Chris G4HYG

The default settings of the frequency control program used with HDSDR limit it to 40 MHz. When you have HDSDR running with the receiver select the ExtIO button to the right of the Tune frequency displ

I should be able to get all the existing messages on the Yahoo group moved to this new group in the next week or so.. There is a search facility on this group, Yahoo removed it on the other group as p

I've just uploaded the latest versions of all CCW files, manuals and FAQ to the Files section. This includes the latest version of Sentinel_SDR v1.30 for use with the Sentinel 2 receiver and the Sentr

One of the advantages of using Groups.io is that they offer the service to transfer members and messages from the old Yahoo group into the new one. I've just set that in motion so over the next few da

Here's a quick guide to get a Sentinel 2 receiver or a Sentry 5 transceiver working with CW Skimmer and the Reverse Beacon Network Aggregator. 1) Follow the instructions for CW Skimmer and the RBN Agg

-- Chris Moulding Cross Country Wireless 7 Thirlmere Grove, Bolton, Lancs, BL4 0QB, UK Tel: +44(0)1204 410626 Mob: +44(0)7752 391908 Secure email: g4hyg@... Web: http://www.crosscountrywire

Hi Steve, Unfortunately there is no option to CAT control the SDR-4+ in CW Skimmer. Usually you would look for a SoftRock Ensemble option as it uses the same Si570 controller. One option is to use the

Hi Stephen, Everything should go to the new ,io group now. All the Yahoo members have moved across and all the messages from the old group are now on this group and can be searched. It had got to the

The later versions of the HF Active Antenna have a 60 MHz low pass filter between the balanced FET pre-amp and the driver amplifier feeding the ethernet cable. The low pass filter was originally added

It's probably not a driver problem as such. If the driver isn't working then you would be fixed on the receiver default frequency (7.050 MHz as new) at startup and it wouldn't change frequency at all.

On the later HF Active Antennas we used a hybrid transformer rather than the Owen splitter to reduce the RF loss through the base unit. Ideally both outputs should be terminated for best results in te

I mentioned a few days ago that I'd be running the Sentry 5 prototype in the CQ WW CW contest as a final test before starting the production PCB board design. I've always wondered if it would be possi

Thanks, David. No matching device needed. Just 15m of RG-58u cable run between the transceiver and the antenna. Regards, Chris G4HYG

We stopped making the Digi Tracker over a year ago. Sales had dropped to near zero since most amateurs were using smartphone apps to send APRS position packets rather than use radio. I wrote a couple

I've just checked the actual figures from Google Play. A total of 19971 downloads of APRS Messenger Android from Google Play with 2479 still active on Android handsets over a year after I removed the

Thanks for letting me know about that. The gps.htm page was a very old page that didn't have a link from the index page as far as I know. I've replaced it with a copy of the APRS TNC page to remove th