TKM Avionics MX-300B RT328T Nav/Comm Replacement

Electrically & mechanically replaces the older RT328T, RT308C, RT328A, RT328C, RT328D, RT528E & RT508T radios. 

The MX-300 features 760 COM channels & 200 NAV channels with 10-watts of power output, auto squelch, active/standby frequency display with "flip-flop" capability, 10 programmable frequencies can be stored in memory, 28V operation.

The MX-300B Nav/Comm is designed as a slide in replacement.

Simply slip your old unit out and slip this new one in - it's as simple as that!

The MX-300 is warranted for 2 years.                  

About Us To be honest we are not much different than our Customers. We are a family owned and operated company filled with pilots, aircraft mechanics, sailors, hunters and campers. We love what we sell and have a passion for it. Our #1 goal is to treat you, our Customer, as we would like to be treated ourselves.

Here are a few things about us you should know: We are Authorized Dealers for everything we sell; You will receive the full Manufacturer's Warranty and Support when you purchase from us; We will travel with and help you as you journey through the sometimes confusing process of buying online; We will always strive to provide you the best shopping experience possible. Payment Immediate payment is required on all purchases. Product Condition All of our items are brand new, unused, unopened, undamaged in their original packaging (where packaging is applicable) unless otherwise stated in the listing. All packaging will be the same as what you would find in a retail store unless it was packaged by the manufacturer in non-retail packaging such as an unprinted box or plastic bag. Our Hours We are open 8:00am to 6:00pm Eastern Time Monday through Friday and Saturday mornings from 8:00am to 12:00pm Eastern Time. Contact Us We can be reached by email at Or feel free to call us at: 1 (866) 440-2461 Shipping We will make every attempt to ship all orders placed before noon Eastern Time Monday - Friday the same day. Orders placed after noon Eastern Time should be shipped the following business day. Orders placed over the weekend will be shipped on Monday or the next business day. We ship all of our items via FedEx, UPS or USPS. Standard shipping for most items is via USPS Priority Mail, a 2 to 3 business day service. Some smaller, lighter and inexpensive items will be shipped via USPS First Class Mail, a 3 to 6 business day service. For some items other faster shipping options are offered. Priority Express Mail is a 1 to 2 business day service. PLEASE NOTE: Express mail does NOT count the day of purchase as one of those days. Returns We understand that from time to time you may need to return or exchange the item you have purchased. You may return your purchase for a full refund within 30 days of purchasing, and you will pay the return shipping.All returned items must be in their original packaging and in unused condition. You may exchange your purchase anytime within 30 days of purchase, and we will pay the return shipping for your exchange. Any problem with an item must be reported within the 30 day period.