Topband: Comments on High Performance RX Antennas for a Small Lot (Webinar)

Hi Rick, I would also think that peak radiation angle of the RX antenna versus the arrival angle of the desired signal is also a big variable that would not allow the relationship you heard on the webinar to be true under all conditions. As you said it probably is too much of a generalized

Topband: Comments on High Performance RX Antennas for a Small Lot (Webinar)

In this webinar, it was asserted (without explanation) that for every 1 dB increase in RDF, you get 1.5 to 2.0 dB improvement in S/N ratio. I've never heard that before and don't even see how it makes sense. Actually, I don't even know how you can make generalizations like that unless you are

Re: Topband: BCB High Pass Filter

Consider making your own filters -Original Message- From: Roger White Sent: Thursday, March 03, 2016 10:59 AM To: topband@contesting.com Subject: Topband: BCB High Pass Filter Anyone have a BCB High Pass Filter that they would recommend? Seems like there were a number of sources for

Re: Topband: BCB High Pass Filter

I noticed a bit of BC inter-mod so built a 9 pole Chebyshev high pass filter dead bug style in a small diecast box with some internal screening made from double sided pcb stock. I designed it with the excellent RF filter design package from Iowa Software, and used an LC meter to get the

Re: Topband: Am I the only one in step?

> Mike - I agree the objective, but the reality is a little harder! > > The 160 allocations across Europe, for example, vary widely. 1800-1810 is not generally part of the allocated spectrum. Various countries have various parts of the band with varying power privileges (you'll have seen

Re: Topband: BCB High Pass Filter

Hi Roger, if you would not like to waste money then look and build this filter: http://www.ok1rr.com/index.php/technical-topics/40-an-efficient-mw-band-stop-filter 73 - Petr, OK1RP http://ok1rp.blogspot.com http://160mband.blogspot.com On Thu, Mar 3, 2016, at 05:46 PM, Roger White wrote: >

Re: Topband: BCB High Pass Filter

Sorry, that article is for the TX BPFs W3NQN receive BPFs are in the July/Aug 1999 issue of QEX. On 03/03/2016 01:54 PM, Eric NO3M wrote: Ed published a two (2) part article in May / June 1998 QST that discusses the design background (available in ARRL QST archives). _

Re: Topband: BCB High Pass Filter

Concur; the plug-in filters at the bottom right of the signal conditioner photo I sent earlier are homebrew BPFs based on W3NQN design criteria. Ed published a two (2) part article in May / June 1998 QST that discusses the design background (available in ARRL QST archives). The ones I built

Re: Topband: BCB High Pass Filter

I highly recommend the Array Solutions W3NQN BCB. I had a local BC station a few miles away developed problems resulting in IMD with an external preamp ON connected to a flag that rendered 160 unusable. The W3NQN BCB completely fixed the issue. Notified but I’ve no idea if the offending BC

Re: Topband: Topband Digest, Vol 159, Issue 5

On Thu,3/3/2016 10:12 AM, Jay Terleski wrote: We sell allot of them. Jay, WX0B The W3NQN-designed filters that Jay sells are excellent. 73, Jim K9YC _ Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: Topband Digest, Vol 159, Issue 5

Everyone, thanks for the info. I really only need a Rx only filter. Roger since your nearby, common down and try one out. http://arraysolutions.com/Products/AS160HPF.htm We sell allot of them. Jay, WX0B Jay Terleski President Array Solutions 214 954 7140 On Thu, Mar 3, 2016 at 11:00 AM,

Re: Topband: BCB High Pass Filter

That mirrors my experience. I've also got a pair of the ICE BCB receive only filters and would only recommend them if you don't need very deep attenuation. 73, Barry N1EU On Thu, Mar 3, 2016 at 12:25 PM, Jim Brown wrote: > Most of the bandpass filters I reviewed

Re: Topband: BCB High Pass Filter

Hi Roger, The inexpensive 160 meter W3LPL receive only bandpass filter provides more then 20 dB rejection at 1700 kHz, more than 30 dB below 1600 kHz, more then 40 dB below 1500 kHz and more than 60 dB below 1400 kHz. Depending on the frequency of your nearby AM broadcast station, you may

Re: Topband: [Bulk] BCB High Pass Filter

I have one from Heros Technology in UK, bought 12 years ago, they are still in business and have some interesting products. I checked the filter yesterday with my VNWA and it is exactly as advertised. Array Solutions also has a W3NQN design with better specs at the high end of the BCB.

Re: Topband: BCB High Pass Filter

Most of the bandpass filters I reviewed and published in NCJ a few years ago provide very good rejection on the AM broadcast band. The ICE bandpass filter is the exception. http://k9yc.com/BandpassFilterSurvey.pdf At the end of the article there are links to response plots for each of the

Re: Topband: BCB High Pass Filter

$28.00 for this one... http://www.iceradioproducts.com/filtersrf.html From: Topband on behalf of Eric NO3M Sent: Thursday, March 3, 2016 10:09 AM To: topband@contesting.com Subject: Re: Topband: BCB High

Re: Topband: BCB High Pass Filter

It states on the Clifton Labs homepage: "Clifton Laboratories is no longer in business. No products are available for sale or repair." However, the PDF manual including the schematic for the BCB high pass filter is here: http://www.cliftonlaboratories.com/Documents/Z10022A%20Manual.pdf It

Re: Topband: BCB High Pass Filter

Everyone, thanks for the info. I really only need a Rx only filter. The DLWC BCB filter looks nice. BTW, does anyone know if Clifton Labs still in business? I thought I saw somewhere they no longer sell products. I remember years ago they had some high quality products. Roger White W5RDW

Re: Topband: BCB High Pass Filter

I like this filter: http://www.dxengineering.com/parts/dlw-fl1718 73, Barry N1EU On Thu, Mar 3, 2016 at 10:59 AM, Roger White wrote: > Anyone have a BCB High Pass Filter that they would recommend? Seems like > there were a number of sources for these a number of years

Topband: BCB High Pass Filter

Anyone have a BCB High Pass Filter that they would recommend? Seems like there were a number of sources for these a number of years ago, but Google only came up with a few now. Roger White W5RDW Murphy, TX _ Topband Reflector Archives - http://www.contesting.com/_topband