eHam

eHam Forums => Misc => Topic started by: KC8KTN on January 20, 2019, 09:33:42 PM



Title: 7.210 L.S.B. WOW
Post by: KC8KTN on January 20, 2019, 09:33:42 PM
I want to build a Radio Wall on 40 meters . On 7.210 I was hearing Spanish A. M. radio station very strong  broadcasting on U.S.A. Ham bands . Wow how sad.. I will just have to live with it I quess. 73ss
Please be Safe #1. Enjoy the radio waves....


Title: RE: 7.210 L.S.B. WOW
Post by: G3RZP on January 21, 2019, 02:59:23 AM
If the station was not in the Americas (i.e. ITU Region 2), it was legal. Plus, there are some 32 countries that have a footnote in the International Radio Regulations allowing non-amateur transmissions between 7000 and 7200kHz. As the band 7000 - 7200 kHz is Primary for the amateur service, if they get interference from amateurs, that's hard luck to them. From 7200 to 7300, the primary allocation for ITU Regions 1 and 3 is Broadcasting: 7300 to 7400 is Broadcasting as a Primary service world wide although again, a number of countries have footnotes allowing other services


Title: RE: 7.210 L.S.B. WOW
Post by: K7MEM on January 21, 2019, 06:04:27 AM
You should count yourself lucky. In the early days (50 years ago) the 40 meter Novice CW band (7.100-7.150 MHz) was full of short wave AM broadcast stations. During the day, there wasn't much of a problem. But then, 40 meter propagation wasn't very good. But at night, all of those stations would come booming through. I thought it was a lot of fun, trying to work other stations, in between the broadcast stations. During a QSO, there was always someone singing in background, in some strange language. And their tones were modified by your offset frequency. A notch filter was a real plus, to help get rid of the heterodynes.

These days, most of those broadcast stations are gone. So the bands are pretty clear.

Dancing around radio stations was a lot of fun. So, like you said "Enjoy the radio waves....".


Title: RE: 7.210 L.S.B. WOW
Post by: K3UIM on January 21, 2019, 08:19:41 AM
MEM: Ah the memories! And with all of the Novice restrictions too! Hi.
Charlie, K3UIM


Title: RE: 7.210 L.S.B. WOW
Post by: KS2G on January 21, 2019, 09:38:36 AM
MEM: Ah the memories! And with all of the Novice restrictions too! Hi.
Charlie, K3UIM


Yes!
Like maximum 100 watts DC-input, and crystal control so that you had to tune the band to find the frequency of whomever was responding to your CQ.   ;)


Title: RE: 7.210 L.S.B. WOW
Post by: KC7YE on January 21, 2019, 10:05:49 AM
Had one "rock" for 40 mtrs, smack dab on a BC station. No internet back then had to find someone who had other rocks or buy new and that was a days pay for one rock. 75 watts max input too, tho I never got close to that power.


Title: RE: 7.210 L.S.B. WOW
Post by: DL8OV on January 21, 2019, 10:46:02 AM
This wouldn't be connected to this post would it?

https://www.eham.net/ehamforum/smf/index.php/topic,123506.0.html

In the original post it looks like a case of receiver overload, with 'KTN it could be anything from aliens to fairies.

Peter DL8OV


Title: RE: 7.210 L.S.B. WOW
Post by: KE6EE on January 21, 2019, 10:49:26 AM
with 'KTN it could be anything from aliens to fairies.

Not to mention the "wow" factor.


Title: RE: 7.210 L.S.B. WOW
Post by: KC8KTN on January 21, 2019, 11:18:33 AM
I knew someone would start with the snarky comments.  Wow. Keeping it real. Nuff said.

https://youtu.be/eyCEexG9xjw


Title: RE: 7.210 L.S.B. WOW
Post by: RENTON481 on January 21, 2019, 12:24:40 PM
I want to build a Radio Wall on 40 meters . On 7.210 I was hearing Spanish A. M. radio station very strong  broadcasting on U.S.A. Ham bands . Wow how sad.. I will just have to live with it I quess. 73ss
Please be Safe #1. Enjoy the radio waves....

Probably China Radio International, 7210 khz, 2200-2357 UTC, Spanish to Europe and the Americas, 150KW transmitter in Albania.


Title: RE: 7.210 L.S.B. WOW
Post by: G3RZP on January 22, 2019, 01:04:36 AM
Historically, 40m was 7-7.3 world wide. Got chopped to 7 - 7.15 in 1938 at Cairo for Regions 1 and 3 and down 7 -7.15 in Region 1 in 1947, then 7 - 7.1 at Geneva in 1959. As a result of the IARU lobbying, 7.1 - 7.2 was restored to Primary Amateur at the 2003 World Radio Conference although there are still rogue BC stations in the 7.1 - 7.2 segment and one of them was issued a frequency in that range last year by ACMA, the Australian licencing authority!" There are some 33 countries that have footnotes allowing non-amateur services in whole of 40m: although many of these services have Primary status within those countries, they have to put with any interference from amateur stations in other countries.


Title: RE: 7.210 L.S.B. WOW
Post by: W4AMP on January 22, 2019, 06:33:46 AM
I knew someone would start with the snarky comments.  Wow. Keeping it real. Nuff said.

https://youtu.be/eyCEexG9xjw

Barbecued iguana is tight.

(http://static.tumblr.com/f40cff9477fc5392797426019909d533/wihposx/uUUmspw88/tumblr_static_20130822184519uid2425.jpg)


Title: RE: 7.210 L.S.B. WOW
Post by: DL8OV on January 22, 2019, 10:38:33 AM
"I knew someone would start with the snarky comments.  Wow. Keeping it real. Nuff said."

As a friend of mine in London, UK would say, "let's face it, sunshine, you've got previous".

Peter DL8OV


Title: RE: 7.210 L.S.B. WOW
Post by: NO2A on January 22, 2019, 12:44:41 PM
One time I had a QSO on 40m cw,while a broadcast station was playing "Tell her about it " by Billy Joel.  I'll never forget that.     ;) :D ;D


Title: RE: 7.210 L.S.B. WOW
Post by: G3RZP on January 22, 2019, 02:43:49 PM
At the end of the day, the people defending and supporting amateur radio at the ITU  - which is where it matters internationally, as well as at Regional Telecommunications Organisations such as APT, CITEL, CEPT etc - are the IARU. They can only do that if amateurs support their national societies. You may not like ARRL, RSGB, DARC etc but without their support of IARU, there would be no voice for amateur radio at international level. Now you may say 'I am only interested in EMCOM, and only use VHF, so it doesn't concern me.' Until your EMCOM is wiped out by high power VHF satellites..... because the ITU has reallocated the bands and the US didn't get enough support to keep the ham bands clear....the FCC can have the ham bands clear for  intra US terrestrial services , but have no control over satellites once the ham bands have lost primary status at international level.

Your choice ... I'm old enough that having held my callsign for over 50 years, it's getting to the stage, especially with ill health, it doesn't really concern me, except for my desire to see amateur to flourish in the future. That's why I spent 13 years of vacation time going to Geneva to support amateur radio.....


Title: RE: 7.210 L.S.B. WOW
Post by: N8YX on January 22, 2019, 04:48:14 PM
You really haven't lived until you've had to use your receiver's interference-fighting features on 40M CW during the height of the Cold War. Above 7.100, it was Radio Mockba and similar every 10KHz, all the way up the band. Below, it was all the other CW ops trying to get away from the SWBC QRM and each other.

It was lots of fun using things like IF Shift, Passband Tuning, AF Tuning, Pitch, CW VBT and narrow filters to dig yourself a nice, quiet little receiving hole then call CQ and hope you got an answer that wasn't too far out of your passband...


Title: RE: 7.210 L.S.B. WOW
Post by: W3WN on January 22, 2019, 05:14:48 PM
I want to build a Radio Wall on 40 meters . On 7.210 I was hearing Spanish A. M. radio station very strong  broadcasting on U.S.A. Ham bands . Wow how sad.. I will just have to live with it I quess. 73ss
Please be Safe #1. Enjoy the radio waves....
Sounds like Fake News.

Well, go for it.  And don't forget to post on your billboard (you did get that billboard up, right?) M40MGA...

Make 40 Meters Grate Again.

(Couldn't resist.  Sorry for the cheesy remark)


Title: RE: 7.210 L.S.B. WOW
Post by: KC8KTN on January 23, 2019, 09:58:40 PM
Thanks for some great replies that were informative and from the heart without snarky attitude that a few allways do . But that is to be expected. Everyone please be safe and enjoy the hobby.  73s


Title: RE: 7.210 L.S.B. WOW
Post by: N0YXB on January 24, 2019, 07:54:39 AM
I want to build a Radio Wall on 40 meters . On 7.210 I was hearing Spanish A. M. radio station very strong  broadcasting on U.S.A. Ham bands . Wow how sad.. I will just have to live with it I quess. 73ss
Please be Safe #1. Enjoy the radio waves....
Sounds like Fake News.

Well, go for it.  And don't forget to post on your billboard (you did get that billboard up, right?) M40MGA...

Make 40 Meters Grate Again.

(Couldn't resist.  Sorry for the cheesy remark)

Good one! Thanks for the chuckle.


Title: RE: 7.210 L.S.B. WOW
Post by: G3RZP on January 25, 2019, 03:13:38 AM
How many of you guys remember Radio Pakistan on 7010 and splattering taking out over 10kHz?


Title: RE: 7.210 L.S.B. WOW
Post by: RENTON481 on January 25, 2019, 02:05:37 PM
I remember Firedrake being all over 41/40 meters during the Cold War. I didn't know it was a jammer. I thought it was a legit program of Chinese classical music.


Title: RE: 7.210 L.S.B. WOW
Post by: G3RZP on January 25, 2019, 02:13:24 PM
While at the time, complaints through the official ITU route were just ignored....but they were very quick to complain through ITU when they suffered interference..... But that is all history now.


Title: RE: 7.210 L.S.B. WOW
Post by: KB2FCV on January 25, 2019, 02:21:42 PM
One time I had a QSO on 40m cw,while a broadcast station was playing "Tell her about it " by Billy Joel.  I'll never forget that.     ;) :D ;D

One of my favorite 40m QSO's w/ SW broadcast interference was on Halloween. My friend and I were having an SSB QSO on 40 (he lived down the street from me). The SW broadcast station played Bach's Fugue in D minor (very famous organ piece that kinda goes with Halloween). My friend and I got a kick out of that!


Title: RE: 7.210 L.S.B. WOW
Post by: NN3W on January 27, 2019, 06:25:10 PM
I was not rock bound, but I do remember well the landmines between 7.100 and 7.150 as evening and night set in.  Between TASS and the other 250 KW broadcasters, the Novice subband was a challenge.


Title: RE: 7.210 L.S.B. WOW
Post by: K1FBI on January 31, 2019, 04:43:42 AM
Thanks for some great replies that were informative and from the heart without snarky attitude that a few allways do . But that is to be expected. Everyone please be safe and enjoy the hobby.  73s
There is only one “L” in always. Hope that wasn’t too “snarky”.
‘NUFF SAID  ;D