Category: Equipment

INRAD Microphones

INRAD Desk Microphone System is an exciting line of great sounding microphone models. Each INRAD microphone has an attractive stage-style body and a unidirectional cardioid element with unique audio characteristics to accommodate every operator’s voice, radio and preferences. INRAD micrpohones can be connected to most popular amateur radio transceivers, including ICOM, Yaesu, Kenwood, FlexRadio, Elecraft, Ten-Tec products.

“Buried” Coax

I’ll be installing a Hygain AV-640 in the next 2 days and it will be in the backyard about 50 ft behind the house. I was just going to dig a shallow trench and put it in there. However, I was wondering if it is OK to bury coax underground [su_button url=”https://forums.qrz.com/index.php?threads/buried-coax.617020/”]Read the Original Article[/su_button]

A 1-rig solution

400 watts at home; 20 watts portable I received my new transceiver in the mail today, only two days after ordering it. My hopes are that it will be a one-box replacement for the FT-891, KX2 and maybe even my Flex 6300. The radio is a SunSDR2Pro from Russia (via…

Video: Flex 6300 vs. RSPduo

In this corner…weighing in at $265 – the (insert dramatic reverb) RSPduo from SDR Play (end reverb!). With all the ingredients on hand I couldn’t resist pitting David against Goliath. For the few weeks I’ve had the RSPduo, I’ve used it mostly to copy FT8 on various HF bands and…

4:1 Balun

VHF & UHF Antennae From M0CVO Antennas

To compliment their range of excellent HF aerials, (I use one, the’re good, they work – G8YPE), M0CVO offers a selection of VHF and UHF antenna. More information on their website [su_button url=”http://www.m0cvoantennas.com/apps/webstore/products/category/1494822?page=1″]M0CVO Webshop[/su_button]

The Phoenix 4m Dipole

Antennas/4M
This 4m dipole was designed as a club project for the Phoenix Radio Club to use with a bulk purchase of 4m converted “PMR” radios. No claim is made as to the originality of the basic design- a dipole is a dipole- although the design has been engineered for easy assembly and to give repeatable results.

Kenwood 830 Heather Switch Replacement

Hello everyone, I need to replace the Heater Switch on a Kenwood 830S. Do you know if you need to remove the front panel or if I can do it from the inside? If not remove the front panel is it difficult? I saw the diagram and it looks tedious. [su_button url=”https://forums.qrz.com/index.php?threads/kenwood-830.614686/”]Read the Original Article[/su_button]

Yup – It’s Another Si5351 VFO

To many, this will be just another Si5351 VFO project, with nothing to distinguish it from the others. In fact, that’s exactly what it is. The “how to” of connecting an Arduino board to an Si5351 board, wiring up a display, and loading the firmware, is straightforward, and well established. To…

2 element Yagi for 50 MHz

Antennas/6M/6 meter Yagi AntennasThis 6 meter 2 element yagi antenna is simple, compact and effective antenna for 50 Mhz. The design antenna was optimized with AO for best match to 50 ohms, no matching network. A choke balun is recommended to decouple feedline currents….

3 Element Beam for 50 MHz

Antennas/6M/6 meter Yagi Antennas A six meter band 3 element yagi beam antenna project with shortened elements using coax cables with the outer ends stripped and the center conductor shorted in somewhat of a Bazooka antenna….

An Experimental Q Meter

Technical Reference/Test EquipmentThe article describes Q factor, methods of measuring Q factor, inductance and capacity using a Q meter and the design of an experimental Q meter unit.
The Q factor or quality factor of an inductance is commonly expressed as the ratio of its series reactance to its series resistance….