Re: [Elecraft] Field Day rig experience

with bandwidths as low as 200 Hz. And yes, these are still "roofing" filters, because they limit exposure (bandwidth), thus protecting later stages (in the K3S case, the IF amp, 2nd mixer, and DSP). 73, Wayne N6KR CWops #1085 CWA Advisor levels II and III http://cwops.org/ -

Re: [Elecraft] Field Day rig experience

085 CWA Advisor levels II and III http://cwops.org/ On Thu, 6/14/18, Wes Stewart wrote: Subject: Re: [Elecraft] Field Day rig experience To: elecraft@mailman.qth.net Date: Thursday, June 14, 2018, 4:47 PM Will, First of all I have said before and will

Re: [Elecraft] Field Day rig experience

- On Thu, 6/14/18, Wes Stewart wrote: Subject: Re: [Elecraft] Field Day rig experience To: elecraft@mailman.qth.net Date: Thursday, June 14, 2018, 4:47 PM Will, First of all I have said before and will repeat it, I detest the term "roofing filter.&q

Re: [Elecraft] Field Day rig experience

lters at the first I-F.  So, this is the origin of the term roofing filter---in comparison to the barn-door up conversion first I-F. > > 73, Will, wj9b > > CWops #1085 > CWA Advisor levels II and III > http://cwops.org/ > > &g

Re: [Elecraft] Field Day rig experience

---- On Wed, 6/13/18, Wes Stewart wrote: Subject: Re: [Elecraft] Field Day rig experience To:elecraft@mailman.qth.net Date: Wednesday, June 13, 2018, 3:08 PM Certainly not to disparage the K3(S) architecture (I have two of them) there is nothing inherently wrong with an up-conve

Re: [Elecraft] Field Day rig experience

pendent) selectivity protection in front of the final IF, even if that is now implemented using DSP techniques! Terry G3VFO -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of WILLIE BABER Sent: 14 June 2018 16:02 To: elecraft@mailman.qth.net; Wes Stewart Subject:

Re: [Elecraft] Field Day rig experience

st I-F. 73, Will, wj9b CWops #1085 CWA Advisor levels II and III http://cwops.org/ On Wed, 6/13/18, Wes Stewart wrote: Subject: Re: [Elecraft] Field Day rig experience To: elecraft@mailman.qth.net Date: Wednesday, June 13, 2018, 3:08 PM Certainly not

Re: [Elecraft] Field Day rig experience

Certainly not to disparage the K3(S) architecture (I have two of them) there is nothing inherently wrong with an up-conversion receiver, if modern hardware is used. See: https://martein.home.xs4all.nl/pa3ake/hmode/g3sbi_intro.html and my friend Cornell's, Star-10 transceiver.

Re: [Elecraft] Field Day rig experience

and III > http://cwops.org/ > > -------- > On Wed, 6/13/18, Jim Brown wrote: > > Subject: Re: [Elecraft] Field Day rig experience > To: elecraft@mailman.qth.net > Date: Wednesday, June 13, 2018, 10:36 AM > > On 6/12/2018 4:50 PM, R

Re: [Elecraft] Field Day rig experience

ar among contesters, especially Omni V and VI (modified with a narrow cw filter at the first I-F). 73, Will, wj9b CWops #1085 CWA Advisor levels II and III http://cwops.org/ On Wed, 6/13/18, Jim Brown wrote: Subject: Re: [Elecraft] Field Day rig expe

Re: [Elecraft] Field Day rig experience

On 6/12/2018 4:50 PM, Robert G Strickland wrote: A small nit... perhaps my ignorance... but, I think that the roofing filter [by whatever name] comes after the first mixer, at the so-called IF frequency. A month or so ago, as part of a project to measure input Z of receivers and preamps, I

Re: [Elecraft] Field Day rig experience

any way around this fact (at least not yet) and you can see the difference in the Sherwood numbers. 73, Will, wj9b CWops #1085 CWA Advisor levels II and III http://cwops.org/ On Sat, 6/9/18, Wayne Burdick wrote: Subject: Re: [Elecraft] Field Day

Re: [Elecraft] Field Day rig experience

/ On Sat, 6/9/18, Wayne Burdick wrote: Subject: Re: [Elecraft] Field Day rig experience To: "Bill" Cc: "Elecraft Reflector" Date: Saturday, June 9, 2018, 10:34 AM > On Jun 9, 2018, at 5:24 AM, Bill wrote: > > Along the

Re: [Elecraft] Field Day rig experience

On 6/10/2018 3:46 PM, Al Lorona wrote: If you do take the icom, at 3.5A receive current drain you'd better take two extra batteries, too. And don't overlook the HUGE KX2 and KX3 advantage of only 150 mA battery drain on receive, as compared to about 1A for a single RX K3/K3S. 73, Jim K9YC

Re: [Elecraft] Field Day rig experience

Yes. The K3 is intended to be operable from a battery or solar panel, and it’s receive-mode current drain is about 1 amp (a little higher with the sub receiver turned on). 73, Wayne N6KR > On Jun 10, 2018, at 3:46 PM, Al Lorona wrote: > > If you do take the icom, at 3.5A receive current

Re: [Elecraft] Field Day rig experience

If you do take the icom, at 3.5A receive current drain you'd better take two extra batteries, too. Al W6LX >> Take the K3 , leave the IC-7610 at home. It’s to darn heavy to lug around. >> (19 lbs ) >>NS2N __ Elecraft mailing list

Re: [Elecraft] Field Day rig experience

The K3S has exceptionally low TX phase noise and high RMDR. Both are due to the new synth. The rest of the signal chain is also very clean. You have to get this right on both RX and TX to optimize for close-proximity, multi-transmitter operation (e.g. Field Day, DXpeditions, and big contest

Re: [Elecraft] Field Day rig experience

man.qth.net] On Behalf Of K9MA >Sent: 10 June 2018 20:14 >To: j...@audiosystemsgroup.com >Cc: elecraft@mailman.qth.net >Subject: Re: [Elecraft] Field Day rig experience > >I think the LO phase noise should be pretty close. > >-- > >Scott Ellington. K9MA > >

Re: [Elecraft] Field Day rig experience

I couldn't find any data on transmit phase noise on the Sherwood web site either, and I searched all over for it. Dave   AB7E On 6/10/2018 11:17 AM, Jim Brown wrote: On 6/9/2018 12:54 PM, K9MA wrote: On 6/9/2018 14:52, David Gilbert wrote: I think another major concern for closely

Re: [Elecraft] Field Day rig experience

I think the LO phase noise should be pretty close. -- Scott Ellington. K9MA --- via iPhone > On Jun 10, 2018, at 1:17 PM, Jim Brown wrote: > >> On 6/9/2018 12:54 PM, K9MA wrote: >>> On 6/9/2018 14:52, David Gilbert wrote: >>> I think another major concern for closely positioned

Re: [Elecraft] Field Day rig experience

On 6/9/2018 12:54 PM, K9MA wrote: On 6/9/2018 14:52, David Gilbert wrote: I think another major concern for closely positioned rigs would be transmitted phase noise, and of course that doesn't show up in the Sherwood charts. Yes, it does! All I've ever seen from Rob is RX phase noise.

Re: [Elecraft] Field Day rig experience

Take the K3 , leave the IC-7610 at home. It’s to darn heavy to lug around. (19 lbs ) NS2N Sent from Mail for Windows 10 __ Elecraft mailing list Home:

Re: [Elecraft] Field Day rig experience

Last year I was running my K3s digital, and I could see the CW operators and the voice operators on the P3, but never heard them. At one point one of the CW ops was only 10 KHz away and not interfering with PSK31. Will be repeating the operation this year, with a 7A station, there will be lots of

Re: [Elecraft] Field Day rig experience

We have used the parking lot of Sky View HS, Soldotna, AK for several years. HS was shutdown about five years ago and located in hills south of the *small* city of 7500. Club has TS450's and run two stations 80-10m, 100w under KL7AN. I usually join them to help setup at 9am with 10am start

Re: [Elecraft] Field Day rig experience

On 6/9/2018 14:52, David Gilbert wrote: I think another major concern for closely positioned rigs would be transmitted phase noise, and of course that doesn't show up in the Sherwood  charts. Yes, it does! 73, Scott K9MA -- Scott K9MA k...@sdellington.us

Re: [Elecraft] Field Day rig experience

I think another major concern for closely positioned rigs would be transmitted phase noise, and of course that doesn't show up in the Sherwood  charts.  Jim's tests (http://audiosystemsgroup.com/TXNoise.pdf) show some large differences between various rigs, although the 7300 and 7610 are not

Re: [Elecraft] Field Day rig experience

When the 7300 first came out, I took mine to FD for a test, with high hopes.  Proximity of antennas was close, on the order of 40 (tribander)-200' (double double extended Zepp on 40M) separation, power output limited to 100 watts.  There was a lack of trees to make more space between antennas

Re: [Elecraft] Field Day rig experience

Frank W3LPL - Original Message - From: "Wayne Burdick" To: "Bill" Cc: "Elecraft Reflector" Sent: Saturday, June 9, 2018 4:34:53 PM Subject: Re: [Elecraft] Field Day rig experience > On Jun 9, 2018, at 5:24 AM, Bill wrote: > > Along th

Re: [Elecraft] Field Day rig experience

> On Jun 9, 2018, at 5:24 AM, Bill wrote: > > Along the line (lightly discussed under "K3- AF Knob") of what rigs are used > for dxpeditions and Field Day.. How do the new technology ICOMs (7300 > and 7610) do under the "several rigs on the same band" conditions? The size, > weight, and

[Elecraft] Field Day rig experience

Along the line (lightly discussed under "K3- AF Knob") of what rigs are used for dxpeditions and Field Day..  How do the new technology ICOMs (7300 and 7610) do under the "several rigs on the same band" conditions? The size, weight, and cost factor is inviting for the 7300 - BUT!!! Is it