[Premium-Rx] Collins HF-8050A

[Masamichi Tsuchiya, JA2GXU]

I use one set of HF8054A DDS_ECCM version.
(1Hz/step by remote or 10Hz/step by local, frequency hopping
capability, DDS, 4-Ch ISB and high performance version)

My opinion as followings:
1. IP3:
1-1. Standard version of HF8050 are  +15dBm and requires
         preselector or attenuator in winter and night time in Japan
         which use with full size dipole or similar antenna and low
         band.

1-2. High performance version of HF8050 are +35dBm and
      don't requires preselector or attenuator in winter and night time
      in Japan  which use with full size dipole or similar antenna and
      low band.

      Similar IP3 level of Analog version RX :
      Cubic R3030 or R-2411/U, Harris RF-590A or R-2368B(V)1/URR,
      Telefunken E1700/E1800, Racal RA370* series, Hagenuk RX-1001 etc.

2. Sound of SSB
Compared to Racal RA370* series that very clear and can easy analysis
TX's sound characteristics/IM etc., but sound some inferior by HF8054A.

3. Remote
Use with HF8096 and easy operation, but be careful for AC cord that
requires shielded, if not use shielded cord then occurred heavy EMI
(interferes) to other RX.

Above mentions as my important points for SSB operation.

73
    de JA2GXU
         Masamichi Tsuchiya

----- Original Message ----- 
From: "Paul" <radioboy at telus.net>
To: <premium-rx at ml.skirrow.org>
Sent: Tuesday, March 07, 2006 1:39 AM
Subject: [Premium-Rx] Collins HF-8050A


Hi Group,

I have finally found time to start working on a new project in the shack and
this time is getting my Collins HF-80 system setup and operational. I
managed to repair the mice damage in the HF-8050A RX alst night and got it
running. It actually sounds very good. Didn't get much time to cruise the
bands as it was after midnight when I finished but first impressions are
that it has "nice audio".

Has anyone else here operated or own an HF-8050A? What are your thoughts?
Any "mods" to improve them? I know the biggest one would be to replace the
thumbwheel switches but that would be a big project. My filters are slim.
2.75KHz USB/LSB and 16KHz AM. Problem with these is the IF is 450KHz not
455KHz. I wonder why Collins did this? These radios were made in Canada.
Maybe these are "metric" filters.

Cheers

Paul
VE7KHz


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