tag:blogger.com,1999:blog-3833020312937735212.post6382893344219505319..comments2024-02-28T23:43:32.116-06:00Comments on Advancing Ham Radio.. different ideas: Bi-directional Amplifier DesignStevehttp://www.blogger.com/profile/04247547304933770829noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-3833020312937735212.post-23274385063706020692016-06-16T14:28:21.539-05:002016-06-16T14:28:21.539-05:00I think that dynamic range may be an issue for bro...I think that dynamic range may be an issue for broadband on 420. The cards that do it have a front end that swallows up 30 MHz of the band. Based on another posting here for the Xagyl 900 MHz unit, it looks like you need to keep all the signals in that range below -70 dBm in order to avoid de-sensing the OFDM card. Is that even possible (on a hilltop location)?<br /><br />Ken<br />KE2NKenhttps://www.blogger.com/profile/08633458628386152869noreply@blogger.comtag:blogger.com,1999:blog-3833020312937735212.post-22260590844233336032011-03-26T07:39:42.951-05:002011-03-26T07:39:42.951-05:00Here in Kentucky we are setting up a digital commu...Here in Kentucky we are setting up a digital communications network. We are using BPQ32. It has BBS, Winlink and Chat capabilities. We are also using HSMM to support this project. We are using 2.4Ghz and also using HSMM-Mesh software. Don't give up, take a break and come back stronger. It is always harder for the flag bearer. We need to band together and keep the faith.<br />www.kc4bqk.blogspot.com<br /><br />73<br />Jim<br />KC4BQKJimnoreply@blogger.comtag:blogger.com,1999:blog-3833020312937735212.post-19670245839083504932011-03-25T15:13:02.495-05:002011-03-25T15:13:02.495-05:00There's plenty of activity on satellites, ATV,...There's plenty of activity on satellites, ATV, and SSB on 420MHz-440MHz. <br /><br />Maybe its not in sue everywhere, but it is used and is an important piece of spectrum for those uses.N8HMnoreply@blogger.com