Re: Topband: CY9C

2024-09-07 Thread Don Moman VE6JY
We ran both phone and CW, both with amps (~1 kw) simultaneously on 160m during the RAC contests. Also did that on all the other bands too. SSB was 1845 and CW was 1825 (we never op on a multiple of a 10 khz MW IMD product). Separation was perhaps a wavelength. No special filters or anything were

Re: Topband: High Impedance RX Antennas

2023-04-03 Thread Don Moman VE6JY
A used Tek 1502 TDR is the "gold standard" to me anyway and they can be quite cheap at flea markets etc. They are "arm held" and self contained portable so ideal for up to 1000' runs and have enough resolution that you can "see" defects that you don't really need to worry about. The advantage over

Re: Topband: Comparing antennas was: Re: 160m loaded tower

2023-01-18 Thread Don Moman VE6JY
Even better is to use S Meter dropdown in the KIWI extensions menu it gives a strip chart style presentation that can be configured to easily show small differences in signal levels, far easier to watch and more accurate than the S meter display. On Wed, Jan 18, 2023 at 10:27 AM STEVE MCDONA

Re: Topband: 1940 kHz Intruder

2023-01-04 Thread Don Moman VE6JY
This should be a good candidate for the KIWI network of SDR's and their TDOA transmitter locating ability... On Wed, Jan 4, 2023 at 5:53 PM Ken Boasi wrote: > Hi Frank, > > I am hearing it here in WNY (Rochester area), but very weak (S1 at best). > I can hear it on my vertical, or using receive

Re: Topband: Checking the integrity of 75 ohm cable

2020-10-16 Thread Don Moman VE6JY
Try to find/borrow a older Tek 1502 TDR, they are inexpensive on ebay (~$100) and show way more detail than any of the analyzers I've tried. 73 Don VE6JY On Fri, Oct 16, 2020 at 5:50 PM Michael Walker wrote: > RigExpert has a variety of Antenna Analyzers that have a built in TDRs. > > I highl

Re: Topband: Solar Cycle Fun

2019-11-04 Thread Don Moman VE6JY
Steve, I was hearing some audio on a few on the Eu MW channels around 0040 ut and then saw the spot for FR4NT and checked, and was hearing bits of signal. Perhaps peaking around 0100. As usual the peak seemed to come while the amp was warming up I never called him, just too weak and too many

Re: Topband: V84SAA QSL

2019-04-17 Thread Don Moman VE6JY
Hand delivered to me at Visalia DX convention On Wed, Apr 17, 2019 at 10:07 AM Peter Bacon wrote: > Anyone received their QSL card for the V84SAA operation yet? > 73 > Peter > _ > Searchable Archives: http://www.contesting.com/_topband - Topband > Reflector >

Re: Topband: RX ant-Frozen ground

2016-12-07 Thread Don Moman VE6JY
Hi Steve; Even though I am about 80km from the nearest MW transmitter, BCB IM is a constant issue here. Considerably worse in the winter. I am always VERY suspicious that any crankup towers would be a significant contributor to the creation of IMD products, both because of the sliding sections a

Re: Topband: 8 circle: DXE vs Hi-Z

2014-12-17 Thread Don Moman VE6JY
Well I disagree that gain isn't important. Maybe you topbanders in the better areas of propagation can afford to throw away many db to get a better rdf, but that sure isn't the case up here in mid-northern VE6 land. I have numerous receive antennas including many beverages and Wellbrook loops (lar

Re: Topband: BCI

2014-03-03 Thread Don Moman VE6JY
It is unusual for AM BCB signals on a 10 khz raster to produce signals every 5 khz. It is relatively simple to insert a MW rejection filter in a RX ant loop which should alleviate or cure the problem without having it affect 160m signals. For example: http://www.cliftonlaboratories.com/z10020_am_m

Re: Topband: Another take on power line noise hunting

2013-01-05 Thread Don Moman VE6JY
Similar observations here Paul in my never ending battle to keep on top of the noise situation in my rural area - mainly 14.4 kv distribution and some 25kv 3 phase stuff. Many sources top out above 135 mhz but well below 450 so a yagi in between is certainly helpful. Like a ch 13 tv yagi or som

Re: Topband: Propagation last evening

2012-02-25 Thread Don Moman VE6JY
>From my landlocked 4 square in somewhat frozen and snowy Alberta, Friday was mostly what I'd call a normal evening, i.e. not very good. The bigger stations on the east coast are workable (VY2ZM and N4PN were consistently loud), Europe is a dream (and yes, we consider VO1/2 to be part of Europe

Re: Topband: 1820 BCB + My Problem Partially Solved

2011-12-25 Thread Don Moman VE6JY
MW stations have been legally broadcasting in the so called X band from 1610 to 1710 since about 1997. *On Sun, Dec 25, 2011 at 5:00 PM, Joe Giacobello, K2XX wrote: * > * You said it, Tim! I started tuning around the AM band on Thursday and* * noticed that in addition to the spurious AM statio