{"id":103689,"date":"2021-04-26T22:53:11","date_gmt":"2021-04-26T22:53:11","guid":{"rendered":"https:\/\/www.snapwhole.com\/index.php\/ham-radio-digital-mode-frequencies\/"},"modified":"2023-01-17T01:05:10","modified_gmt":"2023-01-17T01:05:10","slug":"vk3ye-wide-swing-oscillator","status":"publish","type":"page","link":"https:\/\/www.snapwhole.com\/index.php\/vk3ye-wide-swing-oscillator\/","title":{"rendered":"VK3YE Wide Swing Oscillator Construction"},"content":{"rendered":"\n

Building a VK3YE Utility Oscillator<\/strong><\/mark><\/p>\n\n\n\n

Return To Ham Radio Projects<\/a><\/d3><\/center>

\n\n\n\n

I wanted a general utility oscillator to use to test crystals and provide a signal I could use for calibrating\/troubleshooting receivers<\/p>\n\n\n\n

I found VK3YE\u2019s wide swing oscillator on the Net years ago and I\u2019ve built this circuit in the past for the same reason I need it now, and it worked out well for these purposes in the past, so I decide to use it again<\/p>\n\n\n\n

I decided to mount the oscillator in an Altoids Tin, it\u2019s a small case for convenience and metal for shielding, and it is readily available, and its relatively easy to install connectors in the sides<\/p>\n\n\n\n

\n
<\/div>\n\n\n\n
\n
\"A<\/a>
A Simple Circuit<\/figcaption><\/figure><\/div><\/div>\n\n\n\n
<\/div>\n<\/div>\n\n\n\n

For a simple circuit, there are a lot of parts<\/p>\n\n\n\n

\n
<\/div>\n\n\n\n
\n
\"VK3YE<\/a>
VK3YE Oscillator Parts<\/figcaption><\/figure><\/div><\/div>\n\n\n\n
<\/div>\n<\/div>\n\n\n\n

The first step is mounting a BNC in the Altoids Tin to allow the signal to be connected to various outputs<\/p>\n\n\n\n

\n
<\/div>\n\n\n\n
\n
\"BNC<\/a>
BNC Installed in Altoids Tin<\/figcaption><\/figure><\/div><\/div>\n\n\n\n
<\/div>\n<\/div>\n\n\n\n

For the construction of the circuit, I used a mix of Manhattan Construction and Ugly\/dead Bug Construction<\/p>\n\n\n\n

I picked a small copper clad circuit board and started a one end of the circuit and started building the circuit, using small pads to isolate components from the copper board as needed<\/p>\n\n\n\n

For the construction of the circuit, I used a mix of Manhattan Construction and Ugly\/dead Bug Construction<\/p>\n\n\n\n

I picked a small copper clad circuit board and started a one end of the circuit and started building the circuit, using small pads to isolate components from the copper board as needed<\/p>\n\n\n\n

\n
<\/div>\n\n\n\n
\n
\"Circuit<\/a>
Circuit is Built on Copper Clad Circuit Board<\/figcaption><\/figure><\/div><\/div>\n\n\n\n
<\/div>\n<\/div>\n\n\n\n

I continued this method until the circuit was wired, I traced the circuit to verify it was constructed correctly before applying power<\/strong><\/p>\n\n\n\n

\n
<\/div>\n\n\n\n
\n
\"VK3YE
VK3YE Oscillator Final Circuit<\/figcaption><\/figure>\n<\/div>\n\n\n\n
<\/div>\n<\/div>\n\n\n\n

I powered up the circuit and using my frequency counter and N5ESE RF probe to verify the frequency was correct and checked the circuit output power<\/p>\n\n\n\n

\n
<\/div>\n\n\n\n
\n
\"Completed<\/a>
Completed Oscillator<\/figcaption><\/figure><\/div><\/div>\n\n\n\n
<\/div>\n<\/div>\n\n\n\n

Uses for this circuit:<\/span><\/strong><\/p>\n\n\n\n

1 \u2013 QRP transmitter \u2013 need to add a key line, but not the best option<\/p>\n\n\n\n

2 \u2013 QRP base for oscillator \u2013 Need to add buffers and follow on amplifier, but usable<\/p>\n\n\n\n

3 \u2013 Signal Source for testing receivers \u2013 This is why I built it \u2013 place oscillator close to your radio and use to tune and test Receivers<\/p>\n\n\n\n

A very Versatile circuit<\/mark><\/h2>\n\n\n\n

Quick Video of the entire build process<\/p>\n\n\n\n

\n