RAN Technology
VIEW Video Item

Controlling external devices using VERSA-TR

VERSA-TR can be used as an RF-actuated switch to control external devices such as a linear amplifier.
VIEW Video Item

Panadaptor with VERSA-TR

Add big rig features like panoramic/waterfall display and DSP audio with muting using the VERSA-TR

(There are currently no Blogs.)


VIEW News Item
Posted: 12/09/2018
Comments: 0

DX-60 Website Announced

Celebrating the fun of low-power AM While everyone who knew Mike N8ECR is shocked and saddend by his untimely passing, we commemorate his legacy of promoting low-power AM operation with the new DX-60 Net website:  https://dx-60.net//index.cfm?key=mainMike gave tirelessly of his time and energy to provide an opportunity for AM operators in the midwest part of the country to have fun, make friends, and play radio every Sunday mor...  READ MORE
VIEW News Item
Posted: 12/04/2018
Comments: 0

Bob Paquette, microphone collector, passes away

The Microphone Museum, Milwaukee WI Bob Paquette's microphone museum in Milwaukee was known internationally and he will be missed.   This photo shows only a part of his vast collection, in a 2001 visit by Harry N9CQX and Jim K9RJ (SK).   Here is the announcement from the Wisconsin Antique Radio Club:Subject: Bob Paquette Sr. 1929-2018Friends of WARCI, It is with great sadness that we announce the passing...  READ MORE
VIEW News Item
Posted: 12/04/2018
Comments: 0

Mike Beachy N8ECR - SK

"If there's a ham radio heaven, they've got a hell of a net control operator" Dedicated AM operator and long-time net control for the DX-60 and Mighty Elmac nets,  Mike Beachy N8ECR became a silent key on Sat. Dec. 1, 2018.     This is very sad news for all of us who have enjoyed talking with Mike for many years.   I've never met Mike in person but through the bonds of ham radio he was a good friend.  RIP Mike. Mike’s S...  READ MORE
VIEW News Item
Posted: 11/13/2018
Comments: 0

Take the Boatanchor Survey!

Let authors and organizers know what you're interested in Take the Vintage Radio Interest Survey:  https://tinyurl.com/boatanchorsurvey This survey is intended to better understand your vintage radio-related interests for use by vintage radio authors, product developers, and event organizers.Entering your email address helps to ensure the quality of the survey and enables you to receive an Executive Summary of the survey results when it is comp...  READ MORE
VIEW News Item
Posted: 11/11/2018
Comments: 0

Announcing the VERSA-TR (as seen in Dec. 2018 QST)

A Versatile T/R solution for SDRs and vintage radios Inexpensive Software Defined Radios offer excellent performance and value for hams and SWLs, but they lack key features that are needed for actual use on the air:Provision for automatically muting the speakers when transmitting, to eliminate overloading and audio feedback.A sidetone to monitor CW keying. SDRs do not provide a CW sidetone, and even worse, the time delay resulting from digital signa...  READ MORE
VIEW News Item
Posted: 11/10/2018
Comments: 0

Welcome to the new RAN Technology Inc. Website

Bookmark this site! The new RAN Technology Inc. /  W9RAN webpage is on the air!   Please bookmark this page and check back often for news and information ranging from vintage radio to the latest developments in Software Defined Radio. ...  READ MORE

Show All

VIEW Article
Category: Vintage Ham Radio
Comments: 0

Astro...Don Stoner's legacy

How many of these rare transceivers have you seen? A recent post on the Cubic-Astro mail reflector noted the similarities between the rare CIR Astro 200 and the much more common Cubic Astro 150 transceivers.   And therein lies an  interesting story...I have done a little research on the CIR Astro 200, and the commenter was right - it is the progenitor of the Astro line we are much more familiar with as a result of Swan (already owne...  READ MORE
VIEW Article
Category: Vintage Ham Radio
Comments: 0

The DX-60 Family

what hath Benton Harbor wrought? When an engineer at Heathkit in 1962 turned his attention to designing a replacement for the somewhat flawed DX-40 novice transmitter, little would he have expected the DX-60 to remain in the Heathkit catalog for 14 years.    From the new solid-state power supply to the streamlined apeperance and dependable performace, the new transmitter was instantly popular with novices who had t...  READ MORE
VIEW Article
Category: Crystal Replacement
Comments: 0

Four Channel Oscilaltor board

One board, up to four frequencies Epson programmable oscillators are a good substitute for quartz crystals in many applications, but they're a bit different to use.   First, they are active devices that require DC power, typically 5 volts at 45mA.    Second, like all ICs they are easily damaged by static and voltages that exceed the design limits.   Finally they are in DIP packates that are i...  READ MORE
VIEW Article
Category: Crystal Replacement
Comments: 0

Programmable Oscillators - the modern day "rock"

Cheaper and more accurate and stable than the old type With the demise of  International Crystal in 2018, hams and experimenters lost the last US-based source of affordable one-off custom crystals.  (And the definition of "affordable" ended up over $30 each).     Sure there are some offshore sources but the reality is, manufacturing one crystal to a specific frequency is not simple or inexpensive, and all crysta...  READ MORE
VIEW Article
Category: Vintage Audio
Comments: 0

"A Pair of 6V6s"

What more does one need to hear good audio? The first audio amplififer I made (that worked) used a single 6V6 to amplify the output of a regenerative receiver.    Ever since they've been my idea of what a good audio tube should be and with a big speaker mounted on a piece of plywood, a 6V6 will produce "room filling volume" as the magazine articles fo the day said.   But as my music tastes grew acousti...  READ MORE
VIEW Article
Category: VERSA-TR Information
Comments: 0

Does the VERSA-TR protect my receiver while transmitting?

An important question - and the answer is YES! My primary aim when desiging the VERSA-TR was low power transmitters, and to protect the receiver from potentially damaging voltages when transmitting. 100 watts into 50 ohms is a +50dBm signal.  I'd measured the attenuation at the receiver connector in the labe at -60 to -70 dB (depending on frequency), which means that should result in -10 to -20dB at the receiver, which should be ...  READ MORE
VIEW Article
Category: VERSA-TR Information
Comments: 0

VERSA-TR Panadaptor Video

Use the VERSA-TR to improve your SDR panadaptor An inexpensive SDR like my RANVerter Pi Plus can add a panoramic spectrum and waterfall display to almost any vintage (or modern) radio.    The ability to use the SDR as a 2nd receiver that can be tuned to a different frequency or mode from the main transceiver is a real plus, but annoying feedback and delayed audio will be normally heard through the PC speakers in the transmit mode...  READ MORE
VIEW Article
Category: VERSA-TR Information
Comments: 0

Using VERSA-TR as an RF-actuated switch

The muting relay on the VERSA-TR can be used to control other devices when RF is present.   An example would be an "On The Air" sign, or to key an amplifier.    One specially-wired cable is required - note that no connection is made to the sleeve, which is usually the ground connection on a TRS plug.  A normally-open set of relay contacts exists between the ...  READ MORE
VIEW Article
Category: VERSA-TR Information
Comments: 0

Using VERSA-TR with conventional speakers

Muting requires a different speaker connection VERSA-TR can be used to mute conventional (non-amplified) speakers as would be used with a non-SDR receiver.    This requires the user to wire up two cables with 3.5mm (1/8") stereo plugs on one end.   Note that connections are made to EITHER the tip or ring of the connector and to the sleeve which is normally the ground return.   It doesn't matter whether yo...  READ MORE
VIEW Article
Category: VERSA-TR Information
Comments: 0

TRS (stereo audio) plug reference

3 circuit TRS, 1/8" (3.5mm) diameter plug Just for reference, the common 1/8" dia. stereo plug which is used for VERSA-TR speaker/audio connections.   The three connections are commonly known as Tip, Ring, and Sleeve, but are typically wired as Left, Right, and Ground in stereo audio hookups.   ...  READ MORE