Messages

181

European Pirates and Private Stations / Re: FRSH test 5800 // 7700 AM 1941 utc 11 Apr 2020

« on: April 11, 2020, 2028 UTC »

5800 khz  using 20 khz AM bandwidth... why not use all of the HF spectrum instead....

I'm sure that's sorted out now.

182

Equipment / Re: L band antennas

« on: April 10, 2020, 1909 UTC »

If you are feeling ambitious
http://lea.hamradio.si/~s53mv/wumca/cavity.html
these are some nicely built antennas

I get a security warning from Chrome when I visit that site!

183

European Pirates and Private Stations / Mystery_Radio_21 4700 AM 0828 utc 25 Mar 2020

« on: March 25, 2020, 1034 UTC »

Very weak but can just hear audio @10:20

184

General Radio Discussion / Re: Room Monitors

« on: March 10, 2020, 1114 UTC »

Back in the 80s I used to hear someone's cordless phone base unit (I believe this was on 1610 kHz or so?) from a distance of about 10 miles. Must have been a foreign model with a lot of power.

Same here. Probably a bit lower than 1610 though.
These were definitely not legal where I lived.

185

Equipment / Re: Spitfire Am transmitter

« on: March 08, 2020, 2226 UTC »

I was told that with ASIO drivers under windows it can be reduced to 20mS.  That said, bass distortion cancellation is reduced.  Long waveforms take time to process.  Even the delay in a modern optimod or omnia is on the order of a second or two.  The industry has given up on low latency processing for all things but talent processing, mainly because no one monitors off air anymore.  Thanks HD Radio...

+-RH

I don't think this is correct.
It's well under a second on any machines I use.

186

European Pirates and Private Stations / Re: All 80s Radio 5810//7715 AM 1318 utc 05 Mar 2020

« on: March 07, 2020, 1420 UTC »

Signal here is probably around SIO:232 or 242 on the R-390A. Pop music & occasional loud static crashes

Some nice fade ups around 2233-2235. After doing some searching around, it doesn't appear that this one has an e-mail address

See if this works
Hello@All80sjukebox.com

Don't expect a QSL card but he should reply.

187

European Pirates and Private Stations / Re: All 80s Radio? 5810 AM 1318 utc 05 Mar 2020

« on: March 05, 2020, 1721 UTC »

Also on 7705, moved to 7715.

188

Amateur Radio / Re: Thoughts on HF verticals

« on: March 04, 2020, 2213 UTC »

I have very limited experience with verticals on HF but I do own a Hy-Gain multiband antenna.

I carried out an A/B test against my Inverted V. I tuned the vertical for best SWR on the frequency I was using (wasn't concerned about the other bands). 150 watts AM on 48 mtrs.
Using the Inv V, a friend could receive my signal at about an s9 on his Grundig portable ~80 miles away.
On the Hy-Gain vertical, he could only just detect a signal.

Reception of my signal on an SDR ~470 miles distant was different. About an s9 on the Inv V and s8 on the vertical.

When the weather improves, I'm going to drag the Hy-Gain out of the shed and set it up properly using my recently acquired (and brilliant) NanoVNA .

189

European Pirates and Private Stations / Re: All 80's 7705 AM 1320 utc 01 Mar 2020

« on: March 01, 2020, 1515 UTC »

Testing new audio components.
New mod transformer, new mod choke and new amp.
Seems to be working very well. 

190

Equipment / Re: NanoVNA for dummies

« on: February 27, 2020, 1010 UTC »

If EXACT accuracy is not required at this time, then don't worry about calibrating it yet. The unit comes calibrated across the entire range of the VNA.
I assume you do have the required adapters to connect your antenna.
Connect antenna to CH0.

Go to the menu
Select DISPLAY. Select TRACE and turn off all traces except trace 1.
In the menu, select STIMULUS and set the START frequency of the range you want to measure. For example, if you want to adjust your aerial for 440 Mhz, set the START at 400M. Repeat for STOP. Say, 500M.
If you want, you can calibrate it now and save it as a preset.
Back in the menu, select DISPLAY-FORMAT and SWR.
Use the switch at the top to move the marker to the bottom of the SWR curve to read the SWR ratio.

That's it.
You can narrow the range if required.

191

European Pirates and Private Stations / Re: Coast FM 1494 AM 0011 utc 24 Feb 2020

« on: February 24, 2020, 1053 UTC »

on 1493.95
0011 music, 0015 jingle ID, music, 0017

Did you get a clear ID?
Coast were off air since Saturday and still off this morning when I checked. I receive them on goundwave.

192

General Radio Discussion / Re: Technician's Special

« on: February 21, 2020, 2124 UTC »

Just needs a a re-cap and it'll be good to go....

193

Equipment / Re: Spitfire Am transmitter

« on: February 13, 2020, 1900 UTC »

Do part 15 transmitters need to be of an approved make or can you use any type providing it conforms?

194

Equipment / Re: Discone antenna mounting

« on: February 09, 2020, 2011 UTC »

Does it not mount to the side of the mast with 2 u brackets?
You can't screw a PL259 into an N type socket.

195

European Pirates and Private Stations / Re: All 80s? via test? 5800 AM 1304 utc 05 Feb 2020

« on: February 05, 2020, 1342 UTC »

No ID's Ray.
Just an audio test.