The AM Forum
April 26, 2024, 01:19:02 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
 
   Home   Help Calendar Links Staff List Gallery Login Register  
Pages: 1 ... 3 [4] 5 ... 10
 31 
 on: April 23, 2024, 12:41:59 PM 
Started by W7NGA - Last post by W7NGA
Anyone else notice that 21.420-21.440 MHz is being used now by the POTA regularly? I understand due to the lack of AM activity, not that there is a shortage of spectrum on 15-meters, but after calling CQ AM on 21.430 I was asked, on SSB, to please QSY as this was a POTA frequency and there was to be scheduled activities within the hour. Wait ... what? Sigh ...

I'm not implying that POTA needs to move, but that more AM activity might allow for squatters rights! Shocked

W7NGA
Seaside, Oregon

 32 
 on: April 23, 2024, 06:02:04 AM 
Started by BA7OMW - Last post by BA7OMW
Noticed your online...
The calaculator seems great...
Do you have the link...

Ohhh you just departed...


Wayne



The calculator can be downloaded from LU5HAH’s website
https://lu5hah.blogspot.com/2022/02/para-aquellos-que-deseen-calcular-sus.html#comment-form

 33 
 on: April 23, 2024, 05:41:25 AM 
Started by BA7OMW - Last post by vk3alk
Noticed your online...
The calaculator seems great...
Do you have the link...

Ohhh you just departed...


Wayne


 34 
 on: April 23, 2024, 02:33:21 AM 
Started by BA7OMW - Last post by BA7OMW
Hi...

Not sure of your name or country not that it matters....
I am not an expert on CMCD but will give it a go to help...
Tonight will check though whether all your calculations of the tuned circuit are correct using 4 X 11N90s either side etc: and advise soon....
The current balun should be fine and also the DC blocking capacitors locations can be positioned before or after the choke... Smiley

Using CMCD with 80 volts applied should be OK....
Driving current will be interesting but your operating frequency is 160M so thats in your favour.... Cheesy
Are you using Digital drive or Sinewave drive ?

Wayne

Thank you for your help.
I plan to use digital drivers, using an IXDD614 to drive two FQA11N90s.

 35 
 on: April 22, 2024, 10:11:22 PM 
Started by BA7OMW - Last post by vk3alk
Hi...

Not sure of your name or country not that it matters....
I am not an expert on CMCD but will give it a go to help...
Tonight will check though whether all your calculations of the tuned circuit are correct using 4 X 11N90s either side etc: and advise soon....
The current balun should be fine and also the DC blocking capacitors locations can be positioned before or after the balun... Smiley

Using CMCD with 80 volts applied should be OK....
Driving current will be interesting but your operating frequency is 160M so thats in your favour.... Cheesy
Are you using Digital drive or Sinewave drive ?

Wayne

 36 
 on: April 22, 2024, 08:12:02 PM 
Started by WA2SQQ - Last post by W1NB
I have calculated the focal point, 6.1 inches. The baffle came with a hub assembly that I think I can modify to support a button hook strut on which I will mount the mic. I’ve ordered some 4mm round aluminum stick and a 4mm shaft coupling. It should be here Friday.

Here is a picture of the squirrel baffle


 37 
 on: April 22, 2024, 07:47:20 PM 
Started by WA2SQQ - Last post by WA2SQQ
I figured out what it was. Please share details of the mount you will use. Have you calculated the proper focal point?

 38 
 on: April 22, 2024, 06:44:09 PM 
Started by W3GMS - Last post by AJ1L
Since NEAR-Fest will be Wednesday and Thursday this time around

NEARFest is Thursday and Friday this time, instead of the usual Friday/Saturday. Not Wednesday/Thursday.

 39 
 on: April 22, 2024, 06:27:53 PM 
Started by Detroit47 - Last post by Detroit47
Looking for large RF Contactors email or IM
Johnathan N8QPC

 40 
 on: April 22, 2024, 03:58:28 PM 
Started by W3GMS - Last post by W3GMS
The Hamfest:
https://near-fest.com/


If I remember correctly, Johnson's Steak and Seafood restaurant had several locations in NH. For 1st time visitors to Near-Fest who want to attend the dinner, actual location and even directions (say from the hamfest) might be useful.

AND, if you Google Northwood Birchwood Brewery, you get Northwoods Brewing Co.,
https://www.northwoodsbrewingcompany.com/

SOME CLARIFICATION WOULD BE HELPFUL.

Nothing worst then a bunch of hungry PO'd hamfesters driving around trying to find the right restaurant.


Here is the link: https://www.northwoodsbrewingcompany.com/visit

From what I gather, the restaurant is at the same location as the brewery.   

Joe

Pages: 1 ... 3 [4] 5 ... 10
AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
 AMfone © 2001-2015
Powered by SMF 1.1.21 | SMF © 2015, Simple Machines
Page created in 0.039 seconds with 14 queries.