<![CDATA[PolEx Technologies]]>https://www.polex-tech.com/blogRSS for NodeSun, 05 Dec 2021 01:40:50 GMT<![CDATA[Dayton Hamvention 2019 a Success!]]>https://www.polex-tech.com/post/dayton-hamvention-2019-a-success5ce2e61d461a6c0015846292Mon, 20 May 2019 17:41:25 GMTK1KP

The Polar Explorer was very well received at the Dayton Hamvention! The booth was packed on Friday and Saturday with folks learning about the new technology transmitter. It's gratifying to see how quickly the average ham 'get's it', recognizing the real practical advantages that a high efficiency transmitter can offer in size, weight, and cost. Over 500 business cards were handed out, and several more hams signed up for the Beta testing program.

Watch the video about the Polar Explorer from a live Dayton Hamvention 2019 video chat with W5KUP.COM:

https://youtu.be/kLuAApJMIZo (fast forward to 20:50 for the beginning) Tony, K1KP

]]><![CDATA[What is The Polar Explorer?]]>https://www.polex-tech.com/post/what-is-the-polar-explorer5c87fbf14f5b24001cbd16f6Tue, 12 Mar 2019 18:35:29 GMTK1KPThe Polar Explorer is a breakthrough in transmitter design which brings much higher efficiency to SSB and CW transmitters. Most 'linear' amplifiers run at around 55 to 60% efficiency, which means a lot of extra power supply capacity is required, along with extra cooling and dissipation capacity. By increasing efficiency, The Polar Explorer significantly reduces power supply requirements as well as cooling. From this, significant reductions is cost, size, and weight can be realized for a given power output level.

]]><![CDATA[Is it an Amplifier?]]>https://www.polex-tech.com/post/is-it-an-amplifier5c87fbf14f5b24001cbd16f4Tue, 12 Mar 2019 18:35:29 GMTK1KPNO! It is a transmitter! The Polar Explorer handles the transmitter processing end-to-end, from microphone or key to antenna. It works with your station transceiver, which then only functions as a receiver. The Polar Explorer interfaces to your transceiver using the CAT interface to obtain frequency and mode information. It automatically follows the transceiver as you QSY or change modes. Your transceiver never transmits; The Polar Explorer handles those functions, and includes a T/R relay to protect your transceiver.

]]><![CDATA[Can I still use my logging program?]]>https://www.polex-tech.com/post/can-i-still-use-my-logging-program5c87fbf14f5b24001cbd16f5Tue, 12 Mar 2019 18:35:29 GMTK1KPYES! The Polar Explorer interfaces with your station transceiver via it's CAT port. So how can you connect a PC logging program? The Polar Explorer provides a second CAT port that connects to your PC. Your PC logging program still 'sees' your transceiver as it always has! Any commands the PC sends to the transceiver are transferred automatically by The Polar Explorer, and your transceiver's responses are sent back the the PC. Your PC logging program can still get frequency and mode information from you transceiver, and control it's frequency and mode directly, as before. The Polar Explorer automatically follows these changes - ready to transmit on the correct frequency.

]]><![CDATA[What are the Features?]]>https://www.polex-tech.com/post/what-are-the-features5c8a3b308cd274001cbf864eTue, 12 Mar 2019 11:45:05 GMTK1KP Polar Explorer Features & Benefits

FEATURES BENEFITS

-500W output -Power for tough band conditions

-160 thru 10 meters HF coverage -All HF bands (except 60meters)

-SSB, CW, AM, FM, RTTY (AFSK) -All modes

-Interfaces with most Transceivers -Use your familiar Tcvr controls

-Gets Frequency & Mode from Host -Fully automatic transceive operation

-CESSB compression -Highly effective audio compression without splatter

-5kHz audio for AM, ESSB -Enjoy higher fidelity modes

->80% efficiency -Lower cost, size, weight

-Self contained power supply -No external supply needed

-small size 14” x 5.5” x 9” -Fits in your carry-on

-light weight (xx#) -You can still carry it!

-USB port for PC -Use your favorite logging/control software

-VOX/PTT operation -Flexible control

-TX audio monitoring -Easy to adjust your TX audio

]]><![CDATA[How does it achieve High Efficiency?]]>https://www.polex-tech.com/post/how-does-it-achieve-high-efficiency5c8e35daa0c364001d5a65c2Sun, 10 Mar 2019 12:01:14 GMTK1KPThe Power Amplifier stage of traditional RF amplifiers must be biased in the linear region to avoid creating distortion and harmonics. This constrains the efficiency to be around 55-60%, which means that for every watt of RF output, an additional .8 watts of power is wasted. This wasted power contributes to power supply costs, cooling requirements, and ultimately, cost, weight, and size.

By using a class D power amplifier, much higher efficiency can be achieved, between 80 to 90%. A class D amplifier is not linear, so instead of attempting to linearly amplify to SSB signal, it is actually created in the RF Power Amplifier stage. The class D power amplifier is driven by a phase-modulated signal, which is amplitude modulated by the drain supply in the amplifier.

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