[SJDXA] TXBPF etc.

[Bob Beyer]

Links to go with the pictures I sent earlier:

 

TXBPF group on groups.io

You have to be very patient and wait several years until another group buy forms up.  Minimum is usually around 75 participants.

They also do group buys on single band filters every so often also.  These filters are based on the W3NQN design published in QST back in the 90’s.

https://groups.io/g/TXBPF

 

NanoVNA on eBay

You can also just search NanoVNA on eBay.  Lots of sellers here and in Asia.

https://www.ebay.com/itm/50KHz-900MHz-NanoVNA-Vector-Network-Analyzer-HF-VHF-UHF-Antenna-2-8-TFT-topUSA/173992234185

 

NanoVNASaver software for use with the NanoVNA. The screen on many of the units is very small.  I highly recommend use with a PC.

https://nanovna.com/?page_id=90

 

Free file plotter software for overlaying multiple S21 parameter Touchstone (.S2P) files

http://www.rsmicro.com/rsplot-simulator

 

These are the Barid Mounts mast adapters I was talking about.

These are commercial, heavy gauge, galvanized steel.  The canister fits over top of the existing, oversized mast and tightens with 4 bolts.

We’ve used these many time for commercial satellite antenna installations.

Contact Baird 

https://www.bairdmounts.com/products/satellite/complete-list/Mast-Adapters/Mast-Adapter?mtid=12 <https://www.bairdmounts.com/products/satellite/complete-list/Mast-Adapters/Mast-Adapter?mtid=12&fid=82> &fid=82

 

You can contact Baird Directly if you have questions.  They are very helpful.

 

Baird Mounting Systems

6601 Development Drive
Cedar Falls, IA 50613
United States

Phone: 319-233-3561
Fax: 319-235-7653
E-mail: sales at bairdmounts.com

 

 

73,

Bob – KE2D

 

From: sjdxa-bounces at mailman.qth.net [mailto:sjdxa-bounces at mailman.qth.net] On Behalf Of Bob Beyer via SJDXA
Sent: Tuesday, May 26, 2020 11:07 AM
To: 'South Jersey DX Association'
Subject: [SJDXA] TXBPF etc.

 

These are the images I wanted to share on Zoom this morning.

·         Completed 5B4AGN TXBPF

·         NanoVNA from China bought on eBay for <$50 (U.S. distributor in stock)

·         Plots of filter band pass (S21 insertion loss

 

73, Bob – KE2D

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/sjdxa/attachments/20200526/953f9356/attachment.html>