Messages

106

The RF Workbench / Re: Boxes for HF beacon

« on: June 03, 2021, 1724 UTC »

Im using a 30 cal ammo can to house my 10M QRSS monitor.

One thing I discovered: They can leak .  Mine did somewhere around the handle.

Make sure to check before deployment

107

The RF Workbench / Re: BCB Bandstop filter

« on: June 03, 2021, 1709 UTC »

Schematic




Prototype

108

The RF Workbench / Re: BCB Bandstop filter---the ebay version, not nearly as good

« on: June 03, 2021, 1705 UTC »

Less than half the rejection . This was a "DISTILL AM" filter seen on Ebay

109

The RF Workbench / BCB Bandstop filter Chinese vs homebrew

« on: June 03, 2021, 1651 UTC »

I built a broadcast band bandstop filter to put in front of my Kiwis, and the results are pretty cool, as measured by the NanoVNA.  I got about 55dB attenuation at the frequency of interest and minimal loss at the rest of HF.

Hope some may find it interesting/useful. NanoVNA is awesome


SCROLL to the right >>>>>>>>>>>>>>>>>>>>

110

HF Beacons / Re: New whooper beacon on 4095.65

« on: June 03, 2021, 1326 UTC »

I temp of 114.....that's a lot !

Nothing electronic likes that kind of heat....especially things like electrolytic caps .  It must see direct sun at times.

111

Equipment / Re: a easy 22m dipole.

« on: June 03, 2021, 1227 UTC »

Sure!

Take ~35' of wire

Cut it in half


Connect the coax inner conductor to one half, the shield to the other, get the whole mess in the air, and you're good to go.

112

Equipment / Re: Dueling Selecta- A Tennas (NOT Banjos)

« on: June 01, 2021, 2141 UTC »

This should be the subject of an article somewhere, thank you for the info.

I wonder if there are any other AMers who are operating QRP like this. I had a Collins AM BCB transmitter that was a 250 watter and I thought *it* was qrp (a pair of 4-250s modulated by another pair) . 5 watts is amazing.

113

Equipment / Re: 630M Loop on the Ground (LoG) antenna

« on: June 01, 2021, 2119 UTC »

How is it on HF?

114

HF Beacons / Re: Someone just above Hiker (8005 ish)

« on: May 31, 2021, 2207 UTC »

Strong into Chris's Sky Loop this afternnon

115

HF Beacons / Re: Someone just above Hiker (8005 ish)

« on: May 30, 2021, 1923 UTC »

That's it!

I can hear it thru Chris's loop better.

Telemetry is intermittently broadcast.

116

HF Beacons / Beacon V5 (8006 ish)

« on: May 29, 2021, 1854 UTC »

Light copy on a very low rep rate station in CW just above HIKER...maybe 8005.5 or 8007 .   Sounds like various CW , bit only once every 30 sec or so.

Anyone else?

117

Equipment / Re: BELKA DX

« on: May 23, 2021, 2248 UTC »

Shipping delays on my Belka because of components shortages.

Patience is a virtue I've hear them say...

118

Equipment / Re: Dueling Selecta- A Tennas (NOT Banjos)

« on: May 23, 2021, 2246 UTC »

That is very cool.  I'm totally amazed that the FCC would allow a 5 watter on the air...I'd love to know more of the nitty gritty of his fight to keep his footprint among the big guns/syndicated stations in the Boston area. What a treat to have in the community. Thanks for bringing this up.

119

Equipment / Re: Blackcat 22M Xmtr

« on: May 23, 2021, 2243 UTC »

I was happy and surprised to see this in this month's issue. As much as I love radio, I've found little to enjoy in the past couple years that I've re-upped to QST.   

120

Equipment / Re: Interesting Chinesium SI4732 Shortwave/Air/FM

« on: May 23, 2021, 2242 UTC »

Article and FB (ughhh) group re: new software for this thing:

https://swling.com/blog/2021/05/si473x-receiver-firmware-update-and-internal-photos/?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+TheSwlingPost+%28The+SWLing+Post%29