On 6/1/2010 11:07 AM, DM4iM wrote: > Elecrafters, > i have a masthead preamp for 6m with 18db gain wich i will install > today. I would like to query the VHF people : What settings do you use > with an external preamp in line? > > ATT ON or OFF? > PRE ON or OFF? > > I feel the right answer is PRE OFF in combination with ATT ON > for maximum performance, but i'm not sure. > > Martin > Hallo Martin,
Others may have other suggestions, but I I usually run it with BOTH and external and the internal preamp on. However, here at my location, almost everything I am trying to work on 6m is very weak. When the band opens up and signals become strong on Es, I have to completely turn off the NB, and then I also can turn off the internal preamp. I have not needed to use the attenuator, but I suspect your strong signal environment over there is a bit more challenging. As far as the tower mounted preamplifier is concerned, most of the weak signal 6m operators I know opt instead for low loss feedline and put the preamplifier in the shack next to the radio. A receive-only preamplifier arrangement is much less expensive (and flexible, since you can easily add an amplifier) and the money saved can be put toward low loss coax, which will help also on transmit. GL on the Magic Band! VY 73, Lance -- Lance Collister, W7GJ (ex: WN3GPL, WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX) P.O. Box 73 Frenchtown, MT 59834 USA QTH: DN27UB TEL: (406) 626-5728 URL: http://www.bigskyspaces.com/w7gj 2m DXCC #11/6m DXCC #815 Interested in 6m EME? Ask me about subscribing to the MAGIC BAND EME email reflector! ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
