Re: [digitalradio] Re: How Can We Push HF Emcomm Messages to the Field?

Skip, Realistically, the 5/8 wave will be maybe around the gain of a dipole. I would use 2 dBi, maybe 3 dBi at the most. I don't think there are any 5/8 wave verticals that can do much better than that and some antenna gurus point out that they can perform worse than half wave antennas. I

Re: [digitalradio] You Have Mail Re: How Can We Push HF Emcomm Messages to the Field?

Bonnie, While your question has been answered quite well by several of us, the main thing to keep in mind is that if you are going to use amateur radio communications, both stations must be operational and within range. These kind of communication must be done with tactical phone for

[digitalradio] Pushing messages on HF

Happy Thanksgiving to all. I know I will probably get some negative feedback, and be called names, but this is a question more than a suggestion. What about 10m? Tech class licensees have privileges, ground wave is often good out to 40-50 miles station to station. OK I guess I'm ready for

Re: [digitalradio] Re: How Can We Push HF Emcomm Messages to the Field?

Rick, Skip, Realistically, the 5/8 wave will be maybe around the gain of a dipole. I would use 2 dBi, maybe 3 dBi at the most. I don't think there are any 5/8 wave verticals that can do much better than that and some antenna gurus point out that they can perform worse than half wave

[digitalradio] KN4LF Daily LF/MF/HF/6M Frequency Radiowave Propagation Forecast #2008-34

The KN4LF Daily LF/MF/HF/6M Frequency Radiowave Propagation Forecast #2008-34 has been published on Friday 11/28/2008 at 1500 UTC, valid UTC Saturday 11/29/2008 through 2359 UTC Friday 12/05/2008 at http://www.kn4lf.com/kn4lf6.htm . 73 GUD DX, Thomas F. Giella, KN4LF Lakeland, FL, USA

Re: [digitalradio] Pushing messages on HF

Don, I am not sure why you think that anyone would treat your suggestion negatively. In fact, I wrote an article on looking at lower infrastructure amateur radio for the HFDEC yahoogroup that posits the use of 10 meters, 6 meters, and 2 meters for public service emergency use by comparing the

Re: [digitalradio] Odd noise in receiver

Yep - removing the antenna makes it go away, so I know it's coming into the rig and not generated by it. I was hoping someone might recognize the cyclical nature of the pest and give me a clue as to what it might be. Strangely enough, last night it was on, but tonight it has disappeared. Tnx

[digitalradio] Fldigi-DXLabs Gateway Update

There is now a new Update available for the Fldigi-DXLabs Gateway. The new version is 1.2.0 and includes the following changes: 1.2.0 (11/28/2008) 1.Connects to DXKeepers TCP Server for logging 2.Allows choice of logging Rig Frequency or Rig + Audio Frequency. 3.Allow choice when logging a RTTY

Re: [digitalradio] Odd noise in receiver

I wonder if it is Pactor 3 ? Sent from my Verizon Wireless BlackBerry -Original Message- From: Dave 'Doc' Corio [EMAIL PROTECTED] Date: Fri, 28 Nov 2008 14:46:45 To: digitalradio@yahoogroups.com Subject: [digitalradio] Odd noise in receiver Wonder if anyone has encountered this

Re: [digitalradio] Odd noise in receiver

Nope - I recognize THAT little nightmare hi hi! Thanks, Andy 73 Dave KB3MOW [EMAIL PROTECTED] wrote: I wonder if it is Pactor 3 ? Sent from my Verizon Wireless BlackBerry *From*: Dave 'Doc' Corio [EMAIL

[digitalradio] Re: Odd noise in receiver

This kind of noise has been showing up quite a lot lately. I've chased down a couple TVI complaints with similar characteristics. The problem has consistently been battery chargers, especially the kind to used to charge the batteries for portable tools. They tend to cycle charging power on and

Re: [digitalradio] Re: How Can We Push HF Emcomm Messages to the Field?

Hi Skip, The numbers for the models seem very optimistic. Normal gain for J-pole (theoretical) can not be more than a dipole, since the antennas is an end fed dipole with the Q section for matching. This means at most 2.14 dBi, but maybe you are experiencing some ground gain which you can get