Hi Andy,
You could try https://www.hy-q.com.au/ Or https://www.rakon.com/ It's a long time since I bought crystals but I have had good service from both companies. I was going to suggest International Crystals but it seems that they are out of business. Here is a good reference: https://www.everythingrf.com/directory/rf-quartz-crystals
These days, I would suggest using AMSAT's Linear Transponder module (LTM) which is described in the 2022 AMSAT Symposium proceedings. You can access this from the https://launch.amsat.org/ if you are a member.
"The AMSAT Linear Transponder Module" was presented by Burns Fisher, WB1FJ. The LTM is a multi-use transponder board set designed for universities and other partners launching cubesats who have need for a communications component. Similar to the radio systems in Fox and GOLF, the partnership provides easy downlinks for universities and a transponder for amateurs.
Some years ago, I designed a simple analogue linear transponder the prototype is detailed here. https://www.dropbox.com/scl/fo/ivdkfd19bf68rda2y71ic/h?dl=0&rlkey=e4rng2... It may be of some interest.
73,
Terry Osborne ZL2BAC
On 7/11/2022 7:33 am, Andy Brian wrote:
Hi,
I'm looking for good source of crystals between 156.5 and 156.600MHz for build experimental linear transponder. Please for any got information or some other solutions. I received a few from marine scanners but it seems not 156Mhz
BR Andy
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