I have the 4' DIGITAL ANTENNA that has 4.5dB Gain with a Standard Horizon Radio on my boat and when your on Squam I can talk to you when I'm on Winni. The Shakespeare should perform the same. I think thats all you need. I fish out to Jeffery's and have no problem receiving and transmitting the 20-25 mile range.
I have the same antenna Charlie's Catch has and I can also hear you guys over on Squam. Mine is mounted on my T-top so it's a little higher up. I've been very pleased with it.
Dave S (Finaddiction)